Radulović, D., Andrić, L., Petrov, M., Stojanović, J.,& Marković, B.. (2020). Tehnološka ispitivanja i naučno-stručna validacija rude iz ležišta „Kula“ u cilju proširenja eksploatacionog prostora i uvećanja rudnih rezervi Rudnika „Grot“-Kriva Feja (Vranje). 
Beograd : Institut za tehnologiju nuklearnih i drugih mineralnih sirovina..

Radulović D, Andrić L, Petrov M, Stojanović J, Marković B. Tehnološka ispitivanja i naučno-stručna validacija rude iz ležišta „Kula“ u cilju proširenja eksploatacionog prostora i uvećanja rudnih rezervi Rudnika „Grot“-Kriva Feja (Vranje). 2020;..

Radulović, Dragan, Andrić, Ljubiša, Petrov, Milan, Stojanović, Jovica, Marković, Branislav, "Tehnološka ispitivanja i naučno-stručna validacija rude iz ležišta „Kula“ u cilju proširenja eksploatacionog prostora i uvećanja rudnih rezervi Rudnika „Grot“-Kriva Feja (Vranje)" (2020).

TY  - JOUR
AU  - Petronijević, Nela
AU  - Stanković, Srđan
AU  - Radovanović, Dragana
AU  - Sokić, Miroslav
AU  - Marković, Branislav
AU  - Stopić, Srećko
AU  - Kamberović, Željko
PY  - 2020
UR  - https://ritnms.itnms.ac.rs/handle/123456789/546
AB  - Flotation tailings rich in carbonate minerals from the tailings deposit of the copper mine Majdanpek (Serbia) were applied for neutralization of the water taken from the extremely acidic Lake Robule (Bor, Serbia). Tests conducted in Erlenmeyer flasks showed that after neutralization of the lake water to pH 7, over 99% of aluminum (Al), iron (Fe), and copper (Cu) precipitated, as well as 92% of Zn and 98% of Pb. In order to remove residual Mn and Ag, the water was further treated with NaOH. After treatment with NaOH, all concentrations of the metals in the lake water samples were below discharge limits for municipal wastewater according to the national legislation of the Republic of Serbia. The results of this work suggest that mining waste could be used for active neutralization of the acid mine drainage. The use of the mining waste instead of lime could reduce the costs of the active treatment of the acid mine drainage.
PB  - MDPI, Basel
T2  - Metals
T1  - Application of the Flotation Tailings as an Alternative Material for an Acid Mine Drainage Remediation: A Case Study of the Extremely Acidic Lake Robule (Serbia)
IS  - 1
VL  - 10
DO  - 10.3390/met10010016
UR  - conv_875
ER  - 

@article{
author = "Petronijević, Nela and Stanković, Srđan and Radovanović, Dragana and Sokić, Miroslav and Marković, Branislav and Stopić, Srećko and Kamberović, Željko",
year = "2020",
abstract = "Flotation tailings rich in carbonate minerals from the tailings deposit of the copper mine Majdanpek (Serbia) were applied for neutralization of the water taken from the extremely acidic Lake Robule (Bor, Serbia). Tests conducted in Erlenmeyer flasks showed that after neutralization of the lake water to pH 7, over 99% of aluminum (Al), iron (Fe), and copper (Cu) precipitated, as well as 92% of Zn and 98% of Pb. In order to remove residual Mn and Ag, the water was further treated with NaOH. After treatment with NaOH, all concentrations of the metals in the lake water samples were below discharge limits for municipal wastewater according to the national legislation of the Republic of Serbia. The results of this work suggest that mining waste could be used for active neutralization of the acid mine drainage. The use of the mining waste instead of lime could reduce the costs of the active treatment of the acid mine drainage.",
publisher = "MDPI, Basel",
journal = "Metals",
title = "Application of the Flotation Tailings as an Alternative Material for an Acid Mine Drainage Remediation: A Case Study of the Extremely Acidic Lake Robule (Serbia)",
number = "1",
volume = "10",
doi = "10.3390/met10010016",
url = "conv_875"
}

Petronijević, N., Stanković, S., Radovanović, D., Sokić, M., Marković, B., Stopić, S.,& Kamberović, Ž.. (2020). Application of the Flotation Tailings as an Alternative Material for an Acid Mine Drainage Remediation: A Case Study of the Extremely Acidic Lake Robule (Serbia). in Metals
MDPI, Basel., 10(1).
https://doi.org/10.3390/met10010016
conv_875

Petronijević N, Stanković S, Radovanović D, Sokić M, Marković B, Stopić S, Kamberović Ž. Application of the Flotation Tailings as an Alternative Material for an Acid Mine Drainage Remediation: A Case Study of the Extremely Acidic Lake Robule (Serbia). in Metals. 2020;10(1).
doi:10.3390/met10010016
conv_875 .

Petronijević, Nela, Stanković, Srđan, Radovanović, Dragana, Sokić, Miroslav, Marković, Branislav, Stopić, Srećko, Kamberović, Željko, "Application of the Flotation Tailings as an Alternative Material for an Acid Mine Drainage Remediation: A Case Study of the Extremely Acidic Lake Robule (Serbia)" in Metals, 10, no. 1 (2020),
https://doi.org/10.3390/met10010016 .,
conv_875 .

TY  - JOUR
AU  - Petronijević, Nela
AU  - Alivojvodić, Vesna
AU  - Sokić, Miroslav
AU  - Marković, Branislav
AU  - Stanković, Srđan
AU  - Radovanović, Dragana
PY  - 2020
UR  - https://ritnms.itnms.ac.rs/handle/123456789/531
AB  - Today human society is already witnessing rapid depletion of non-renewable ore resources. As the distribution of raw material resources globally is very off-balance, and preassure on environment as the consequence of ore exploatation is not negligible, re-utilization and recycling of industrial side-streams gaining on importance. Finding new potentially anthropogenic resources of material (at first place critical raw materials) are inline with sustainable waste management goals, and in correlation with boundaries given by the circular economy principles. Side-streams from mines can become source for recovery of these materials. The aim of this paper was to analyze position of mining waste in correlation with circular economy principles, as well potential for implementation of them within extraction industry in the Republic of Serbia.
PB  - Institut za istraživanja i projektovanja u privredi, Beograd
T2  - Journal of Applied Engineering Science
T1  - Sustainable mining towards accomplishing circular economy principles
EP  - 499
IS  - 4
SP  - 493
VL  - 18
DO  - 10.5937/jaes0-27460
UR  - conv_380
ER  - 

@article{
author = "Petronijević, Nela and Alivojvodić, Vesna and Sokić, Miroslav and Marković, Branislav and Stanković, Srđan and Radovanović, Dragana",
year = "2020",
abstract = "Today human society is already witnessing rapid depletion of non-renewable ore resources. As the distribution of raw material resources globally is very off-balance, and preassure on environment as the consequence of ore exploatation is not negligible, re-utilization and recycling of industrial side-streams gaining on importance. Finding new potentially anthropogenic resources of material (at first place critical raw materials) are inline with sustainable waste management goals, and in correlation with boundaries given by the circular economy principles. Side-streams from mines can become source for recovery of these materials. The aim of this paper was to analyze position of mining waste in correlation with circular economy principles, as well potential for implementation of them within extraction industry in the Republic of Serbia.",
publisher = "Institut za istraživanja i projektovanja u privredi, Beograd",
journal = "Journal of Applied Engineering Science",
title = "Sustainable mining towards accomplishing circular economy principles",
pages = "499-493",
number = "4",
volume = "18",
doi = "10.5937/jaes0-27460",
url = "conv_380"
}

Petronijević, N., Alivojvodić, V., Sokić, M., Marković, B., Stanković, S.,& Radovanović, D.. (2020). Sustainable mining towards accomplishing circular economy principles. in Journal of Applied Engineering Science
Institut za istraživanja i projektovanja u privredi, Beograd., 18(4), 493-499.
https://doi.org/10.5937/jaes0-27460
conv_380

Petronijević N, Alivojvodić V, Sokić M, Marković B, Stanković S, Radovanović D. Sustainable mining towards accomplishing circular economy principles. in Journal of Applied Engineering Science. 2020;18(4):493-499.
doi:10.5937/jaes0-27460
conv_380 .

Petronijević, Nela, Alivojvodić, Vesna, Sokić, Miroslav, Marković, Branislav, Stanković, Srđan, Radovanović, Dragana, "Sustainable mining towards accomplishing circular economy principles" in Journal of Applied Engineering Science, 18, no. 4 (2020):493-499,
https://doi.org/10.5937/jaes0-27460 .,
conv_380 .

TY  - CONF
AU  - Pantović Spajić, Katarina
AU  - Stojanović, Ksenija
AU  - Sakan, Sanja
AU  - Đorđević, Dragana
PY  - 2019
UR  - https://ritnms.itnms.ac.rs/handle/123456789/1120
AB  - The consequence of elevated values of toxic pollutants, which originate from numerous human
activities, is contaminated environment [1]. Rapid development of industry and agriculture
contributed to increase in heavy metals in invertebrates, fish and humans [2]. Heavy metals
accumulate in sediments over time which might be a trigger for numerous human diseases due to
possibility of transport of these metals in water medium and entering the food chain [3].
The aim of this study was the estimation of element contamination level in sediments of the important
rivers, accumulation and their tributaries in Serbia. The determination of the sample contents of the 4
elements (Cd, Ni, Sb and V) was conducted by the one-step extraction with inductively coupled
plasma atomic emission spectrometry (ICP OES). Extraction was done with three different acidic
extraction agents. Total of 33 samples of sediments from 16 major river and their tributaries in Serbia
wereanalyzed. The analyzed sediments showed high concentrations of Cd and Ni, which may have
great negative environmental impacts.
In sediments from Zapadna and Južna Morava, Tisa and river Pek the highest concentrations of Cd
was detected. The concentrations of Ni were above maximum permissible concentration in Vrutci and
Zapadna Morava river sediments. Results showed that the content of Sb was low in majority of the
samples. The highest content of V was extracted from Barje sediment sample.
PB  - Bor : University of Belgrade, Technical Faculty in Bor
C3  - 6th INTERNATIONAL STUDENT CONFERENCE ON TECHNICAL SCIENCES
T1  - One-step extraction of Cd, Ni, Sb and V applied to the river and accumulation sediments located in Serbia
EP  - 6
SP  - 6
ER  - 

@conference{
author = "Pantović Spajić, Katarina and Stojanović, Ksenija and Sakan, Sanja and Đorđević, Dragana",
year = "2019",
abstract = "The consequence of elevated values of toxic pollutants, which originate from numerous human
activities, is contaminated environment [1]. Rapid development of industry and agriculture
contributed to increase in heavy metals in invertebrates, fish and humans [2]. Heavy metals
accumulate in sediments over time which might be a trigger for numerous human diseases due to
possibility of transport of these metals in water medium and entering the food chain [3].
The aim of this study was the estimation of element contamination level in sediments of the important
rivers, accumulation and their tributaries in Serbia. The determination of the sample contents of the 4
elements (Cd, Ni, Sb and V) was conducted by the one-step extraction with inductively coupled
plasma atomic emission spectrometry (ICP OES). Extraction was done with three different acidic
extraction agents. Total of 33 samples of sediments from 16 major river and their tributaries in Serbia
wereanalyzed. The analyzed sediments showed high concentrations of Cd and Ni, which may have
great negative environmental impacts.
In sediments from Zapadna and Južna Morava, Tisa and river Pek the highest concentrations of Cd
was detected. The concentrations of Ni were above maximum permissible concentration in Vrutci and
Zapadna Morava river sediments. Results showed that the content of Sb was low in majority of the
samples. The highest content of V was extracted from Barje sediment sample.",
publisher = "Bor : University of Belgrade, Technical Faculty in Bor",
journal = "6th INTERNATIONAL STUDENT CONFERENCE ON TECHNICAL SCIENCES",
title = "One-step extraction of Cd, Ni, Sb and V applied to the river and accumulation sediments located in Serbia",
pages = "6-6"
}

Pantović Spajić, K., Stojanović, K., Sakan, S.,& Đorđević, D.. (2019). One-step extraction of Cd, Ni, Sb and V applied to the river and accumulation sediments located in Serbia. in 6th INTERNATIONAL STUDENT CONFERENCE ON TECHNICAL SCIENCES
Bor : University of Belgrade, Technical Faculty in Bor., 6-6.

Pantović Spajić K, Stojanović K, Sakan S, Đorđević D. One-step extraction of Cd, Ni, Sb and V applied to the river and accumulation sediments located in Serbia. in 6th INTERNATIONAL STUDENT CONFERENCE ON TECHNICAL SCIENCES. 2019;:6-6..

Pantović Spajić, Katarina, Stojanović, Ksenija, Sakan, Sanja, Đorđević, Dragana, "One-step extraction of Cd, Ni, Sb and V applied to the river and accumulation sediments located in Serbia" in 6th INTERNATIONAL STUDENT CONFERENCE ON TECHNICAL SCIENCES (2019):6-6.

TY  - CONF
AU  - Štrbac, Nada
AU  - Sokić, Miroslav
AU  - Minić, Duško
AU  - Božinović, Kristina
AU  - Bugarčić, Mladen
AU  - Stojanović, Jovica
AU  - Mitkovski, Aleksandra
PY  - 2019
UR  - https://ritnms.itnms.ac.rs/handle/123456789/667
AB  - It is known that virtually all of the nickel in nickel sulfide ores occurs in the
mineral pentlandite [(Ni,Fe)9S8]. Therefore, pentlandite is the most common and
abundant ore for extraction of nickel, accounting for over 60% of nickel world
production [1, 2].
The pyrometallurgical extraction of nickel from its sulfide ores is very similar
to the copper extraction process from copper sulfide concentrates. In essence, iron
and sulfur are eliminated by selective oxidation and fluxing. In fact, the oxidation of
pentlandite is the most important chemical process in the pyrometallurgical route
[3].
Because of all mentioned, the characterization of the structural properties of
six pentlandite samples was carried out in this paper. The samples of pentlandite
were roasted in air atmosphere for 30min, in five different temperatures: 400, 500,
600, 700 and 800 °C. Investigation of structural properties and obtained oxidation
products was performed using X-ray diffraction (XRD), scanning electron microscopy
(SEM) and energy dispersive spectrometry (EDS).
PB  - Belgrade : Association of Metallurgical Engineers of Serbia
C3  - 4th Metallurgical & Materials Engineering Congress of South-East Europe MME SEE
T1  - Oxidation roasting of pentlandite samples at elevated temperatures
EP  - 75
SP  - 75
ER  - 

@conference{
author = "Štrbac, Nada and Sokić, Miroslav and Minić, Duško and Božinović, Kristina and Bugarčić, Mladen and Stojanović, Jovica and Mitkovski, Aleksandra",
year = "2019",
abstract = "It is known that virtually all of the nickel in nickel sulfide ores occurs in the
mineral pentlandite [(Ni,Fe)9S8]. Therefore, pentlandite is the most common and
abundant ore for extraction of nickel, accounting for over 60% of nickel world
production [1, 2].
The pyrometallurgical extraction of nickel from its sulfide ores is very similar
to the copper extraction process from copper sulfide concentrates. In essence, iron
and sulfur are eliminated by selective oxidation and fluxing. In fact, the oxidation of
pentlandite is the most important chemical process in the pyrometallurgical route
[3].
Because of all mentioned, the characterization of the structural properties of
six pentlandite samples was carried out in this paper. The samples of pentlandite
were roasted in air atmosphere for 30min, in five different temperatures: 400, 500,
600, 700 and 800 °C. Investigation of structural properties and obtained oxidation
products was performed using X-ray diffraction (XRD), scanning electron microscopy
(SEM) and energy dispersive spectrometry (EDS).",
publisher = "Belgrade : Association of Metallurgical Engineers of Serbia",
journal = "4th Metallurgical & Materials Engineering Congress of South-East Europe MME SEE",
title = "Oxidation roasting of pentlandite samples at elevated temperatures",
pages = "75-75"
}

Štrbac, N., Sokić, M., Minić, D., Božinović, K., Bugarčić, M., Stojanović, J.,& Mitkovski, A.. (2019). Oxidation roasting of pentlandite samples at elevated temperatures. in 4th Metallurgical & Materials Engineering Congress of South-East Europe MME SEE
Belgrade : Association of Metallurgical Engineers of Serbia., 75-75.

Štrbac N, Sokić M, Minić D, Božinović K, Bugarčić M, Stojanović J, Mitkovski A. Oxidation roasting of pentlandite samples at elevated temperatures. in 4th Metallurgical & Materials Engineering Congress of South-East Europe MME SEE. 2019;:75-75..

Štrbac, Nada, Sokić, Miroslav, Minić, Duško, Božinović, Kristina, Bugarčić, Mladen, Stojanović, Jovica, Mitkovski, Aleksandra, "Oxidation roasting of pentlandite samples at elevated temperatures" in 4th Metallurgical & Materials Engineering Congress of South-East Europe MME SEE (2019):75-75.

TY  - CONF
AU  - Bugarčić, Mladen
AU  - Milivojević, Milan
AU  - Jovanović, Gvozden
AU  - Milošević, Dragana
AU  - Daković, Aleksandra
AU  - Stojanović, Jovica
PY  - 2019
UR  - https://ritnms.itnms.ac.rs/handle/123456789/984
AB  - Expanded vermiculite (EV) is clay, a typical 2:1 phyllosilicate which may be
easily produced from the mineral vermiculite. After expansion EV withholds vermiculites
physical structure but becomes far more porous than vermiculite which is
accredited to the huge increase in the intercalation layer thickness. This feature in
conjunction with the fact that the intercalation layer enriched by intercalation cations
and water was the initial motive for this research, which opened a novel method
for spinels synthesis. Intercalation layer of the EV is utilized as a reaction medium
for the synthesis of Fe3O4, MnFe2O4, CoFe2O4, and FeCrFeO4. While magnetite
is synthesized using the co-precipitation method, others are synthesized using
hydrothermal co-precipitation method. Composites are then characterized by XRD
(X-ray diffraction), FTIR (Fourier transformed infrared spectroscopy), SEM/EDS
(scanning electron microscopy with energy dispersing microscopy) that confirmed
the presence of the ferrite spinels inside the intercalation layer. After performed
synthesis of the spinels, further parameters were determined: the isoelectric point
(IEP), the capacity of cation exchange (CEC) and specific surface area (SSA) is
calculated using Brunauer–Emmett–Teller (BET) adsorption isotherm of each
composite together with matrix material (EV). The composites could be used as
potential adsorbents of heavy metals and/or organic pollutants, and this synthesis
method could be used for producing numerous compounds that are mainly being
produced by solvothermal method or co-precipitation method.
PB  - Belgrade : Association of Metallurgical Engineers of Serbia
C3  - 4th Metallurgical & Materials Engineering Congress of South-East Europe MME SEE 2019
T1  - Synthesis and characterization of composites based on expanded vermiculite and ferrite spinels
EP  - 35
SP  - 35
ER  - 

@conference{
author = "Bugarčić, Mladen and Milivojević, Milan and Jovanović, Gvozden and Milošević, Dragana and Daković, Aleksandra and Stojanović, Jovica",
year = "2019",
abstract = "Expanded vermiculite (EV) is clay, a typical 2:1 phyllosilicate which may be
easily produced from the mineral vermiculite. After expansion EV withholds vermiculites
physical structure but becomes far more porous than vermiculite which is
accredited to the huge increase in the intercalation layer thickness. This feature in
conjunction with the fact that the intercalation layer enriched by intercalation cations
and water was the initial motive for this research, which opened a novel method
for spinels synthesis. Intercalation layer of the EV is utilized as a reaction medium
for the synthesis of Fe3O4, MnFe2O4, CoFe2O4, and FeCrFeO4. While magnetite
is synthesized using the co-precipitation method, others are synthesized using
hydrothermal co-precipitation method. Composites are then characterized by XRD
(X-ray diffraction), FTIR (Fourier transformed infrared spectroscopy), SEM/EDS
(scanning electron microscopy with energy dispersing microscopy) that confirmed
the presence of the ferrite spinels inside the intercalation layer. After performed
synthesis of the spinels, further parameters were determined: the isoelectric point
(IEP), the capacity of cation exchange (CEC) and specific surface area (SSA) is
calculated using Brunauer–Emmett–Teller (BET) adsorption isotherm of each
composite together with matrix material (EV). The composites could be used as
potential adsorbents of heavy metals and/or organic pollutants, and this synthesis
method could be used for producing numerous compounds that are mainly being
produced by solvothermal method or co-precipitation method.",
publisher = "Belgrade : Association of Metallurgical Engineers of Serbia",
journal = "4th Metallurgical & Materials Engineering Congress of South-East Europe MME SEE 2019",
title = "Synthesis and characterization of composites based on expanded vermiculite and ferrite spinels",
pages = "35-35"
}

Bugarčić, M., Milivojević, M., Jovanović, G., Milošević, D., Daković, A.,& Stojanović, J.. (2019). Synthesis and characterization of composites based on expanded vermiculite and ferrite spinels. in 4th Metallurgical & Materials Engineering Congress of South-East Europe MME SEE 2019
Belgrade : Association of Metallurgical Engineers of Serbia., 35-35.

Bugarčić M, Milivojević M, Jovanović G, Milošević D, Daković A, Stojanović J. Synthesis and characterization of composites based on expanded vermiculite and ferrite spinels. in 4th Metallurgical & Materials Engineering Congress of South-East Europe MME SEE 2019. 2019;:35-35..

Bugarčić, Mladen, Milivojević, Milan, Jovanović, Gvozden, Milošević, Dragana, Daković, Aleksandra, Stojanović, Jovica, "Synthesis and characterization of composites based on expanded vermiculite and ferrite spinels" in 4th Metallurgical & Materials Engineering Congress of South-East Europe MME SEE 2019 (2019):35-35.

TY  - CONF
AU  - Bugarčić, Mladen
AU  - Perendija, Jovana
AU  - Milošević, Milena
AU  - Milošević, Dragana
AU  - Obradović, Milena
AU  - Karić, Nataša
AU  - Marinković, Aleksandar
PY  - 2019
UR  - https://ritnms.itnms.ac.rs/handle/123456789/993
AB  - Heavy metal presence in aquatic ecosystems has a huge impact on almost all the living [1]. Problem such as this have to be lessened or eliminated if it is possible. Facile and efficient method for decreasing pollutant concentration from water solutions is by adsorption [2]. In this work raw expanded vermiculite (REV) is utilized as carrier of magnetite microcrystals. This modification of the REV was done by ultrasound and consecutive precipitation of magnetite particles on its surface. This composite is characterized using further methods: X–Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Fourier Transformed Infra-Red (FTIR), specific surface area (using BET methodology) and Cation Exchange Capacity(CEC) and its adsorption properties are checked. Considering the structure, CEC and specific surface area this material has moderate adsorption parameters. For example, batch adsorption on 35 °C adsorbent accomplished capacity of 19 mg Ni/g and 65.8 % removal of Ni for 90 minutes of adsorption is done on 45 °C are done with S/L ratio of 1,33 g/L. Adsorption kinetics followed pseudo–second order, as exceptedwith equilibrium capacity of 14.27 mg Ni/g and rate constant of sorption of 0.00594 g/(mg min). Isotherm showed the best correlation with Freundlich isotherm model and somewhat poor for Langmuir isotherm. Gibbs free energy decreases with temperature increase showed that the adsorption process is endothermic so chemisorption is the mechanism responsible for nickel removal.
PB  - Bor : University of Belgrade, Technical Faculty in Bor
C3  - 6th INTERNATIONAL STUDENT CONFERENCE ON TECHNICAL SCIENCES
T1  - Nickel removal from aqueous solution using composite based on magnetite/expanded vermiculite
EP  - 9
SP  - 9
ER  - 

@conference{
author = "Bugarčić, Mladen and Perendija, Jovana and Milošević, Milena and Milošević, Dragana and Obradović, Milena and Karić, Nataša and Marinković, Aleksandar",
year = "2019",
abstract = "Heavy metal presence in aquatic ecosystems has a huge impact on almost all the living [1]. Problem such as this have to be lessened or eliminated if it is possible. Facile and efficient method for decreasing pollutant concentration from water solutions is by adsorption [2]. In this work raw expanded vermiculite (REV) is utilized as carrier of magnetite microcrystals. This modification of the REV was done by ultrasound and consecutive precipitation of magnetite particles on its surface. This composite is characterized using further methods: X–Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Fourier Transformed Infra-Red (FTIR), specific surface area (using BET methodology) and Cation Exchange Capacity(CEC) and its adsorption properties are checked. Considering the structure, CEC and specific surface area this material has moderate adsorption parameters. For example, batch adsorption on 35 °C adsorbent accomplished capacity of 19 mg Ni/g and 65.8 % removal of Ni for 90 minutes of adsorption is done on 45 °C are done with S/L ratio of 1,33 g/L. Adsorption kinetics followed pseudo–second order, as exceptedwith equilibrium capacity of 14.27 mg Ni/g and rate constant of sorption of 0.00594 g/(mg min). Isotherm showed the best correlation with Freundlich isotherm model and somewhat poor for Langmuir isotherm. Gibbs free energy decreases with temperature increase showed that the adsorption process is endothermic so chemisorption is the mechanism responsible for nickel removal.",
publisher = "Bor : University of Belgrade, Technical Faculty in Bor",
journal = "6th INTERNATIONAL STUDENT CONFERENCE ON TECHNICAL SCIENCES",
title = "Nickel removal from aqueous solution using composite based on magnetite/expanded vermiculite",
pages = "9-9"
}

Bugarčić, M., Perendija, J., Milošević, M., Milošević, D., Obradović, M., Karić, N.,& Marinković, A.. (2019). Nickel removal from aqueous solution using composite based on magnetite/expanded vermiculite. in 6th INTERNATIONAL STUDENT CONFERENCE ON TECHNICAL SCIENCES
Bor : University of Belgrade, Technical Faculty in Bor., 9-9.

Bugarčić M, Perendija J, Milošević M, Milošević D, Obradović M, Karić N, Marinković A. Nickel removal from aqueous solution using composite based on magnetite/expanded vermiculite. in 6th INTERNATIONAL STUDENT CONFERENCE ON TECHNICAL SCIENCES. 2019;:9-9..

Bugarčić, Mladen, Perendija, Jovana, Milošević, Milena, Milošević, Dragana, Obradović, Milena, Karić, Nataša, Marinković, Aleksandar, "Nickel removal from aqueous solution using composite based on magnetite/expanded vermiculite" in 6th INTERNATIONAL STUDENT CONFERENCE ON TECHNICAL SCIENCES (2019):9-9.

TY  - CONF
AU  - Stanković, Srđan
AU  - Ranđelović, Dragana
AU  - Petronijević, Nela
AU  - Marković, Branislav
AU  - Sokić, Miroslav
PY  - 2019
UR  - https://ritnms.itnms.ac.rs/handle/123456789/1050
AB  - Lake Robule is an extremely acidic water body located in the proximity of the town of
Bor (eastern Serbia) polluted with high concentrations of dissolved metal cations.
Polluted water drains from the lake into the Bor river. Acid mine drainage originates on
the slopes of the mine overburden deposit named Visoki planir located on the banks of
the Lake. Long term exposure of the pyrite in the overburden to oxygen and water led to
generation of the acid mine drainage. These acidic streams leach and mobilize metal
cations, which end up in the lake Robule, making this water body extremely acidic and
contaminated with metal cations. This situation could be avoided by proper deposition
and reclamation of the mining waste. Inadequate deposition of the overburden of the
Copper mine Bor and its impact on environment were analyzed in this paper.
Reclamation of the mining waste usually consists of technical and biological phases,
where terracing, stabilization, melioration and binding of mine waste occur. The quality
of technical reclamation can often have a decisive impact on the quality of biological
reclamation, surrounding environment and acid mine drainage generation process. In
the copper mine basin in Bor, technical reclamation was carried out only partially and
by forming high waste piles with narrow slopes. That has significantly limited the
chances for successful biological reclamation of the terrain, and the consequences of
this procedure were strongly eroded waste pile slopes without drainage channels, with
almost complete absence of spontaneous vegetation, leaving sulfide minerals in the pile
permanently exposed to water and oxygen.
PB  - Belgrade : Association of Chemists and Chemical Engineers of Serbia (UHTS)
C3  - "International scientific conference Environmental impact of illegal construction, poor planning and design IMPEDE 2019"
T1  - Improper Deposition of the Mining Waste as a Source of the Environmental Pollution: Case Study of the Lake Robule (Bor, Eastern Serbia)
EP  - 480
SP  - 474
ER  - 

@conference{
author = "Stanković, Srđan and Ranđelović, Dragana and Petronijević, Nela and Marković, Branislav and Sokić, Miroslav",
year = "2019",
abstract = "Lake Robule is an extremely acidic water body located in the proximity of the town of
Bor (eastern Serbia) polluted with high concentrations of dissolved metal cations.
Polluted water drains from the lake into the Bor river. Acid mine drainage originates on
the slopes of the mine overburden deposit named Visoki planir located on the banks of
the Lake. Long term exposure of the pyrite in the overburden to oxygen and water led to
generation of the acid mine drainage. These acidic streams leach and mobilize metal
cations, which end up in the lake Robule, making this water body extremely acidic and
contaminated with metal cations. This situation could be avoided by proper deposition
and reclamation of the mining waste. Inadequate deposition of the overburden of the
Copper mine Bor and its impact on environment were analyzed in this paper.
Reclamation of the mining waste usually consists of technical and biological phases,
where terracing, stabilization, melioration and binding of mine waste occur. The quality
of technical reclamation can often have a decisive impact on the quality of biological
reclamation, surrounding environment and acid mine drainage generation process. In
the copper mine basin in Bor, technical reclamation was carried out only partially and
by forming high waste piles with narrow slopes. That has significantly limited the
chances for successful biological reclamation of the terrain, and the consequences of
this procedure were strongly eroded waste pile slopes without drainage channels, with
almost complete absence of spontaneous vegetation, leaving sulfide minerals in the pile
permanently exposed to water and oxygen.",
publisher = "Belgrade : Association of Chemists and Chemical Engineers of Serbia (UHTS)",
journal = ""International scientific conference Environmental impact of illegal construction, poor planning and design IMPEDE 2019"",
title = "Improper Deposition of the Mining Waste as a Source of the Environmental Pollution: Case Study of the Lake Robule (Bor, Eastern Serbia)",
pages = "480-474"
}

Stanković, S., Ranđelović, D., Petronijević, N., Marković, B.,& Sokić, M.. (2019). Improper Deposition of the Mining Waste as a Source of the Environmental Pollution: Case Study of the Lake Robule (Bor, Eastern Serbia). in "International scientific conference Environmental impact of illegal construction, poor planning and design IMPEDE 2019"
Belgrade : Association of Chemists and Chemical Engineers of Serbia (UHTS)., 474-480.

Stanković S, Ranđelović D, Petronijević N, Marković B, Sokić M. Improper Deposition of the Mining Waste as a Source of the Environmental Pollution: Case Study of the Lake Robule (Bor, Eastern Serbia). in "International scientific conference Environmental impact of illegal construction, poor planning and design IMPEDE 2019". 2019;:474-480..

Stanković, Srđan, Ranđelović, Dragana, Petronijević, Nela, Marković, Branislav, Sokić, Miroslav, "Improper Deposition of the Mining Waste as a Source of the Environmental Pollution: Case Study of the Lake Robule (Bor, Eastern Serbia)" in "International scientific conference Environmental impact of illegal construction, poor planning and design IMPEDE 2019" (2019):474-480.

TY  - CONF
AU  - Jovanović, Gvozden
AU  - Glišić, Dragomir
AU  - Radović, Nenad
AU  - Patarić, Aleksandra
PY  - 2019
UR  - https://ritnms.itnms.ac.rs/handle/123456789/945
AB  - Stress and strain distribution at the onset of cleavage fracture during fourpoint bending testing at liquid nitrogen temperature of two commercial mediumcarbon V and TiV microalloyed forging steels, with predominantly acicular ferrite structure, was examined using finite element analysis. The finite element models were based on notched four-point bending Griffiths-Owens’s type specimens, while the material mechanical properties data input was based on stress-strain curves obtained by tensile testing at liquid nitrogen temperature. Results of the modeling showed that there were no distinct differences in strain distribution along the distance from the notch tip between the two steel samples, aside from strain magnitude which stems from the differences in stress-strain curves. Based on the recorded load at fracture, the corresponding displacement calculated by finite element analysis was somewhat larger for the V steel. While the TiV steel breaks at crosshead displacement between 0.3 and 0.5 mm, the V steel breaks between 0.6 and 0.9 mm. Plastic strain at the cleavage initiation site for the TiV steel ranges from 0.0595 to 0.1612, while for the V steel these values range from 0.3694 to 0.6338. Observed differences in plastic deformations near the notch root, where cleavage initiation sites were detected, seem to reflect differences in deformation behavior at liquid nitrogen temperature.
Moreover, such difference could be ascribed to the observed differences in structure, primarily in the volume fraction of acicular ferrite. It was concluded that deformations are more uniformly distributed when acicular ferrite is predominant in
the structure of the steel. It could be ascribed to the effect of “gradual yielding” related to the high dislocation density in acicular ferrite, somewhat lower yield stress and higher ductility of the TiV steel with predominantly acicular ferrite structure.
PB  - Belgrade : Association of Metallurgical Engineers of Serbia
C3  - 4th Metallurgical & Materials Engineering Congress of South-East Europe MME SEE 2019
T1  - Finite element analysis of the cleavage fracture in medium carbon V and TiV microalloyed forging steels
EP  - 70
SP  - 70
ER  - 

@conference{
author = "Jovanović, Gvozden and Glišić, Dragomir and Radović, Nenad and Patarić, Aleksandra",
year = "2019",
abstract = "Stress and strain distribution at the onset of cleavage fracture during fourpoint bending testing at liquid nitrogen temperature of two commercial mediumcarbon V and TiV microalloyed forging steels, with predominantly acicular ferrite structure, was examined using finite element analysis. The finite element models were based on notched four-point bending Griffiths-Owens’s type specimens, while the material mechanical properties data input was based on stress-strain curves obtained by tensile testing at liquid nitrogen temperature. Results of the modeling showed that there were no distinct differences in strain distribution along the distance from the notch tip between the two steel samples, aside from strain magnitude which stems from the differences in stress-strain curves. Based on the recorded load at fracture, the corresponding displacement calculated by finite element analysis was somewhat larger for the V steel. While the TiV steel breaks at crosshead displacement between 0.3 and 0.5 mm, the V steel breaks between 0.6 and 0.9 mm. Plastic strain at the cleavage initiation site for the TiV steel ranges from 0.0595 to 0.1612, while for the V steel these values range from 0.3694 to 0.6338. Observed differences in plastic deformations near the notch root, where cleavage initiation sites were detected, seem to reflect differences in deformation behavior at liquid nitrogen temperature.
Moreover, such difference could be ascribed to the observed differences in structure, primarily in the volume fraction of acicular ferrite. It was concluded that deformations are more uniformly distributed when acicular ferrite is predominant in
the structure of the steel. It could be ascribed to the effect of “gradual yielding” related to the high dislocation density in acicular ferrite, somewhat lower yield stress and higher ductility of the TiV steel with predominantly acicular ferrite structure.",
publisher = "Belgrade : Association of Metallurgical Engineers of Serbia",
journal = "4th Metallurgical & Materials Engineering Congress of South-East Europe MME SEE 2019",
title = "Finite element analysis of the cleavage fracture in medium carbon V and TiV microalloyed forging steels",
pages = "70-70"
}

Jovanović, G., Glišić, D., Radović, N.,& Patarić, A.. (2019). Finite element analysis of the cleavage fracture in medium carbon V and TiV microalloyed forging steels. in 4th Metallurgical & Materials Engineering Congress of South-East Europe MME SEE 2019
Belgrade : Association of Metallurgical Engineers of Serbia., 70-70.

Jovanović G, Glišić D, Radović N, Patarić A. Finite element analysis of the cleavage fracture in medium carbon V and TiV microalloyed forging steels. in 4th Metallurgical & Materials Engineering Congress of South-East Europe MME SEE 2019. 2019;:70-70..

Jovanović, Gvozden, Glišić, Dragomir, Radović, Nenad, Patarić, Aleksandra, "Finite element analysis of the cleavage fracture in medium carbon V and TiV microalloyed forging steels" in 4th Metallurgical & Materials Engineering Congress of South-East Europe MME SEE 2019 (2019):70-70.

TY  - JOUR
AU  - Sokić, Miroslav
AU  - Marković, Branislav
AU  - Stanković, Srđan
AU  - Kamberović, Željko
AU  - Štrbac, Nada
AU  - Manojlović, Vaso
AU  - Petronijević, Nela
PY  - 2019
UR  - https://ritnms.itnms.ac.rs/handle/123456789/504
AB  - In ores, chalcopyrite is usually associated with other sulfide minerals, such as sphalerite, galena, and pyrite, in a dispersed form, with complex mineralogical structures. Concentrates obtained by flotation of such ores are unsuitable for pyrometallurgical processing owing to their poor quality and low metal recovery. This paper presents the leaching of chalcopyrite concentrate from the location "Rudnik, Serbia". The samples from the flotation plant were treated with hydrogen peroxide in sulfuric acid. The influences of temperature, particle size, stirring speed, as well as the concentrations of hydrogen peroxide and sulfuric acid were followed and discussed. Hence, the main objective was to optimize the relevant conditions and to determine the reaction kinetics. It was remarked that the increase in temperature, hydrogen peroxide content, and sulfuric acid concentration, as well as the decrease in particle size and stirring speed, contribute to the dissolution of chalcopyrite. The dissolution kinetics follow a model controlled by diffusion, and the lixiviant diffusion controls the rate of reaction through the sulfur layer. Finally, the main characterization methods used to corroborate the obtained results were X-ray diffraction (XRD) as well as qualitative and quantitative light microscopy of the chalcopyrite concentrate samples and the leach residue.
PB  - MDPI, Basel
T2  - Metals
T1  - Kinetics of Chalcopyrite Leaching by Hydrogen Peroxide in Sulfuric Acid
IS  - 11
VL  - 9
DO  - 10.3390/met9111173
UR  - conv_871
ER  - 

@article{
author = "Sokić, Miroslav and Marković, Branislav and Stanković, Srđan and Kamberović, Željko and Štrbac, Nada and Manojlović, Vaso and Petronijević, Nela",
year = "2019",
abstract = "In ores, chalcopyrite is usually associated with other sulfide minerals, such as sphalerite, galena, and pyrite, in a dispersed form, with complex mineralogical structures. Concentrates obtained by flotation of such ores are unsuitable for pyrometallurgical processing owing to their poor quality and low metal recovery. This paper presents the leaching of chalcopyrite concentrate from the location "Rudnik, Serbia". The samples from the flotation plant were treated with hydrogen peroxide in sulfuric acid. The influences of temperature, particle size, stirring speed, as well as the concentrations of hydrogen peroxide and sulfuric acid were followed and discussed. Hence, the main objective was to optimize the relevant conditions and to determine the reaction kinetics. It was remarked that the increase in temperature, hydrogen peroxide content, and sulfuric acid concentration, as well as the decrease in particle size and stirring speed, contribute to the dissolution of chalcopyrite. The dissolution kinetics follow a model controlled by diffusion, and the lixiviant diffusion controls the rate of reaction through the sulfur layer. Finally, the main characterization methods used to corroborate the obtained results were X-ray diffraction (XRD) as well as qualitative and quantitative light microscopy of the chalcopyrite concentrate samples and the leach residue.",
publisher = "MDPI, Basel",
journal = "Metals",
title = "Kinetics of Chalcopyrite Leaching by Hydrogen Peroxide in Sulfuric Acid",
number = "11",
volume = "9",
doi = "10.3390/met9111173",
url = "conv_871"
}

Sokić, M., Marković, B., Stanković, S., Kamberović, Ž., Štrbac, N., Manojlović, V.,& Petronijević, N.. (2019). Kinetics of Chalcopyrite Leaching by Hydrogen Peroxide in Sulfuric Acid. in Metals
MDPI, Basel., 9(11).
https://doi.org/10.3390/met9111173
conv_871

Sokić M, Marković B, Stanković S, Kamberović Ž, Štrbac N, Manojlović V, Petronijević N. Kinetics of Chalcopyrite Leaching by Hydrogen Peroxide in Sulfuric Acid. in Metals. 2019;9(11).
doi:10.3390/met9111173
conv_871 .

Sokić, Miroslav, Marković, Branislav, Stanković, Srđan, Kamberović, Željko, Štrbac, Nada, Manojlović, Vaso, Petronijević, Nela, "Kinetics of Chalcopyrite Leaching by Hydrogen Peroxide in Sulfuric Acid" in Metals, 9, no. 11 (2019),
https://doi.org/10.3390/met9111173 .,
conv_871 .

TY  - JOUR
AU  - Vuković, Milovan
AU  - Štrbac, Nada
AU  - Sokić, Miroslav
PY  - 2019
UR  - https://ritnms.itnms.ac.rs/handle/123456789/521
AB  - Električni i elektronski otpad sve više ugrožava životnu sredinu ali i predstavlja značajan izvor korisnih metala. To se posebno odnosi na istrošene štampane ploče. One omogućavaju dobijanje osnovnih metala na ekonomski efikasan i ekološki prihvatljiv način. Ekstrakcija metala iz štampanih ploča iziskuje kombinaciju fizičkih, pirometalurških i hidrometalurških postupaka. Predmet ovog rada je hidrometalurški postupak dobijanja bakra iz otpadnih štampanih ploča zbog prednosti u odnosu na ostale postupke. Težište rada je, pri tome, na analizi različitih mogućnosti kiselinskog luženja bakra iz elektronskog otpada - prvom koraku hidrometalurškog tretmana.
AB  - Electric and electronic equipment waste (WEEE) has become more an more dangerous to the environment, but it represents a significant source of valuable metals. It especially refers to the printed circuit boards (PCBs). They allow recovery of various metals by technologies that are economically effective and environmentally friendly. Extraction of base metals from PCBs requires a combination of physical, pyrometallurgical and hydrometallurgical processes. The subject of this paper deals with the hydrometallurgical recycling of copper form PCBs due its advantages compared to the other technologies. This review emphasizes the role of leaching process in the recycling of PCBs, which is the first step in the overall hydrometallurgical process. Various types of acidic leaching treatments of PCBs are discussed and compared.
PB  - Savez inženjera i tehničara Srbije, Beograd
T2  - Tehnika
T1  - Luženje u kiselim rastvorima kao deo hidrometalurškog recikliranja bakra iz istrošenih štampanih ploča
T1  - Leaching in acidic solutions as a part of hydrometallurgical recycling of copper from printed circuit boards (PCBs)
EP  - 819
IS  - 6
SP  - 813
VL  - 74
DO  - 10.5937/tehnika1906813V
UR  - conv_27
ER  - 

@article{
author = "Vuković, Milovan and Štrbac, Nada and Sokić, Miroslav",
year = "2019",
abstract = "Električni i elektronski otpad sve više ugrožava životnu sredinu ali i predstavlja značajan izvor korisnih metala. To se posebno odnosi na istrošene štampane ploče. One omogućavaju dobijanje osnovnih metala na ekonomski efikasan i ekološki prihvatljiv način. Ekstrakcija metala iz štampanih ploča iziskuje kombinaciju fizičkih, pirometalurških i hidrometalurških postupaka. Predmet ovog rada je hidrometalurški postupak dobijanja bakra iz otpadnih štampanih ploča zbog prednosti u odnosu na ostale postupke. Težište rada je, pri tome, na analizi različitih mogućnosti kiselinskog luženja bakra iz elektronskog otpada - prvom koraku hidrometalurškog tretmana., Electric and electronic equipment waste (WEEE) has become more an more dangerous to the environment, but it represents a significant source of valuable metals. It especially refers to the printed circuit boards (PCBs). They allow recovery of various metals by technologies that are economically effective and environmentally friendly. Extraction of base metals from PCBs requires a combination of physical, pyrometallurgical and hydrometallurgical processes. The subject of this paper deals with the hydrometallurgical recycling of copper form PCBs due its advantages compared to the other technologies. This review emphasizes the role of leaching process in the recycling of PCBs, which is the first step in the overall hydrometallurgical process. Various types of acidic leaching treatments of PCBs are discussed and compared.",
publisher = "Savez inženjera i tehničara Srbije, Beograd",
journal = "Tehnika",
title = "Luženje u kiselim rastvorima kao deo hidrometalurškog recikliranja bakra iz istrošenih štampanih ploča, Leaching in acidic solutions as a part of hydrometallurgical recycling of copper from printed circuit boards (PCBs)",
pages = "819-813",
number = "6",
volume = "74",
doi = "10.5937/tehnika1906813V",
url = "conv_27"
}

Vuković, M., Štrbac, N.,& Sokić, M.. (2019). Luženje u kiselim rastvorima kao deo hidrometalurškog recikliranja bakra iz istrošenih štampanih ploča. in Tehnika
Savez inženjera i tehničara Srbije, Beograd., 74(6), 813-819.
https://doi.org/10.5937/tehnika1906813V
conv_27

Vuković M, Štrbac N, Sokić M. Luženje u kiselim rastvorima kao deo hidrometalurškog recikliranja bakra iz istrošenih štampanih ploča. in Tehnika. 2019;74(6):813-819.
doi:10.5937/tehnika1906813V
conv_27 .

Vuković, Milovan, Štrbac, Nada, Sokić, Miroslav, "Luženje u kiselim rastvorima kao deo hidrometalurškog recikliranja bakra iz istrošenih štampanih ploča" in Tehnika, 74, no. 6 (2019):813-819,
https://doi.org/10.5937/tehnika1906813V .,
conv_27 .

TY  - JOUR
AU  - Sokić, Miroslav
AU  - Marković, Branislav
AU  - Kamberović, Željko
AU  - Stanković, Srđan
PY  - 2019
UR  - https://ritnms.itnms.ac.rs/handle/123456789/517
AB  - Primena hidrometalurških procesa omogućava proizvodnju metala iz ruda i koncentrata koji, zbog kompleksne mineralogije i/ili niskog sadržaja metala, nisu pogodni za pirometaluršku preradu. Pored toga, manja potrošnja energije i manji uticaj na životnu sredinu su važne prednosti hidrometalurgije u odnosu na konvencionalne pirometalurške procese. Prilikom luženja sulfidnih minerala sumpornom kiselinom rastvor za luženje mora sadržati oksidaciono sredstvo za oksidaciju sulfidnog sumpora. U ovom radu je ispitivan uticaj temperature na stepen izluženja bakra iz halkopiritnog koncentrata u prisustvu vodonik-peroksida kao oksidansa pri atmosferskom pritisku. Hemijska i rendgenska difrakciona analiza polaznog koncentrata i čvrstog ostatka nakon luženja su korišćene za određivanje mehanizma procesa luženja bakra iz ispitivanog koncentrata.
AB  - Due to complex mineralogy and/or low content of base metals, some ores and mineral concentrates are not suitable for pyrometallurgical treatment. Therefore, those ores and concentrates have to be treated by application of the hydrometallurgical processes. Lower energy consumption and lower environmental impact are important advantages of hydrometallurgy over pyrometallurgy. Leaching of sulphide minerals requires presence of oxidants in acidic environment. Influence of temperature on leaching degree of copper from chalcopyrite in presence of hydrogen peroxide under atmospheric pressure was investigated in this paper. Results of the chemical and X-ray diffraction analysis of the concentrate and leaching residue were used in order to explain mechanism of the copper leaching from the mineral concentrate.
PB  - Savez inženjera i tehničara Srbije, Beograd
T2  - Tehnika
T1  - Luženje halkopiritnog koncentrata rastvorom sumporne kiseline i vodonik-peroksida
T1  - Leaching of chalcopyrite concentrate by hydrogen peroxide in sulphuric acid solution
EP  - 70
IS  - 1
SP  - 66
VL  - 74
DO  - 10.5937/tehnika1901066S
UR  - conv_25
ER  - 

@article{
author = "Sokić, Miroslav and Marković, Branislav and Kamberović, Željko and Stanković, Srđan",
year = "2019",
abstract = "Primena hidrometalurških procesa omogućava proizvodnju metala iz ruda i koncentrata koji, zbog kompleksne mineralogije i/ili niskog sadržaja metala, nisu pogodni za pirometaluršku preradu. Pored toga, manja potrošnja energije i manji uticaj na životnu sredinu su važne prednosti hidrometalurgije u odnosu na konvencionalne pirometalurške procese. Prilikom luženja sulfidnih minerala sumpornom kiselinom rastvor za luženje mora sadržati oksidaciono sredstvo za oksidaciju sulfidnog sumpora. U ovom radu je ispitivan uticaj temperature na stepen izluženja bakra iz halkopiritnog koncentrata u prisustvu vodonik-peroksida kao oksidansa pri atmosferskom pritisku. Hemijska i rendgenska difrakciona analiza polaznog koncentrata i čvrstog ostatka nakon luženja su korišćene za određivanje mehanizma procesa luženja bakra iz ispitivanog koncentrata., Due to complex mineralogy and/or low content of base metals, some ores and mineral concentrates are not suitable for pyrometallurgical treatment. Therefore, those ores and concentrates have to be treated by application of the hydrometallurgical processes. Lower energy consumption and lower environmental impact are important advantages of hydrometallurgy over pyrometallurgy. Leaching of sulphide minerals requires presence of oxidants in acidic environment. Influence of temperature on leaching degree of copper from chalcopyrite in presence of hydrogen peroxide under atmospheric pressure was investigated in this paper. Results of the chemical and X-ray diffraction analysis of the concentrate and leaching residue were used in order to explain mechanism of the copper leaching from the mineral concentrate.",
publisher = "Savez inženjera i tehničara Srbije, Beograd",
journal = "Tehnika",
title = "Luženje halkopiritnog koncentrata rastvorom sumporne kiseline i vodonik-peroksida, Leaching of chalcopyrite concentrate by hydrogen peroxide in sulphuric acid solution",
pages = "70-66",
number = "1",
volume = "74",
doi = "10.5937/tehnika1901066S",
url = "conv_25"
}

Sokić, M., Marković, B., Kamberović, Ž.,& Stanković, S.. (2019). Luženje halkopiritnog koncentrata rastvorom sumporne kiseline i vodonik-peroksida. in Tehnika
Savez inženjera i tehničara Srbije, Beograd., 74(1), 66-70.
https://doi.org/10.5937/tehnika1901066S
conv_25

Sokić M, Marković B, Kamberović Ž, Stanković S. Luženje halkopiritnog koncentrata rastvorom sumporne kiseline i vodonik-peroksida. in Tehnika. 2019;74(1):66-70.
doi:10.5937/tehnika1901066S
conv_25 .

Sokić, Miroslav, Marković, Branislav, Kamberović, Željko, Stanković, Srđan, "Luženje halkopiritnog koncentrata rastvorom sumporne kiseline i vodonik-peroksida" in Tehnika, 74, no. 1 (2019):66-70,
https://doi.org/10.5937/tehnika1901066S .,
conv_25 .

TY  - JOUR
AU  - Stanković, S.
AU  - Šoštarić, Tatjana
AU  - Bugarčić, Mladen
AU  - Janićijević, A.
AU  - Pantović-Spajić, Katarina
AU  - Lopičić, Zorica
PY  - 2019
UR  - https://ritnms.itnms.ac.rs/handle/123456789/514
AB  - Annual production of the sunflower seed in Serbia is between 650,000-720,000 tons. Most of this amount is used in vegetable oil industry. Abundant by-products from this processing are sunflower seed husks. Husks are usually incinerated by vegetable oil producers in order to obtain energy, used as an animal feed, or, unfortunately, landed up at some landfills. In order to promote new, added value for this abundant, renewable resource, the investigation presented in this paper was conducted. For that purpose, adsorption of Cu(II) ions from synthetic solution by unmodified sunflower seed husks was examined. ATR-FTIR was used to identify functional groups as potential active sites for Cu(II) sorption. Zeta potential values were determined to reveal the surface charge, while the cation exchange capacity (CEC) was determined to reveal the amount of exchangeable ions on its surface. ATR-FTIR analysis revealed the presence of specific functional groups (hydroxyl, carboxyl, carbonyl, and amine) responsible for removal of Cu(II) ions. The total CEC of sunflower husk is 47.74 meq/100g and Ca(II) and Mg(II) ions are in dominant exchangeable positions. The study of ion-exchange mechanism involvement was done and results confirmed that this mechanism is not the only mechanism which is involved in copper sorption. Also, the results show that the Cu(II) ions have preference for Mg(II) ions substitution. Sorption experiments were conducted in batch system. The effect of operating parameters (pH, contact time, initial concentration of Cu(II) ions and adsorbent dosage) on the adsorption capacity were investigated. The obtained experimental data were fitted by Langmuir and Freundlich isotherm models. The maximum adsorption capacity for Cu(II) ions calculated from Langmuir adsorption isotherm was 34.89 mg/g which is 15 to 35% higher than the capacity that other researchers reported previously for the same material and pollutant. These results are suggesting that sunflower seed husks have a potential to be applied as an effective adsorbent of copper ions from contaminated waters.
PB  - Univerzitet u Novom Sadu - Tehnološki fakultet, Novi Sad
T2  - Acta Periodica Technologica
T1  - Adsorption of Cu(II) ions from synthetic solution by sunflower seed husks
EP  - 277
SP  - 268
VL  - 50
DO  - 10.2298/APT1950268S
UR  - conv_1024
ER  - 

@article{
author = "Stanković, S. and Šoštarić, Tatjana and Bugarčić, Mladen and Janićijević, A. and Pantović-Spajić, Katarina and Lopičić, Zorica",
year = "2019",
abstract = "Annual production of the sunflower seed in Serbia is between 650,000-720,000 tons. Most of this amount is used in vegetable oil industry. Abundant by-products from this processing are sunflower seed husks. Husks are usually incinerated by vegetable oil producers in order to obtain energy, used as an animal feed, or, unfortunately, landed up at some landfills. In order to promote new, added value for this abundant, renewable resource, the investigation presented in this paper was conducted. For that purpose, adsorption of Cu(II) ions from synthetic solution by unmodified sunflower seed husks was examined. ATR-FTIR was used to identify functional groups as potential active sites for Cu(II) sorption. Zeta potential values were determined to reveal the surface charge, while the cation exchange capacity (CEC) was determined to reveal the amount of exchangeable ions on its surface. ATR-FTIR analysis revealed the presence of specific functional groups (hydroxyl, carboxyl, carbonyl, and amine) responsible for removal of Cu(II) ions. The total CEC of sunflower husk is 47.74 meq/100g and Ca(II) and Mg(II) ions are in dominant exchangeable positions. The study of ion-exchange mechanism involvement was done and results confirmed that this mechanism is not the only mechanism which is involved in copper sorption. Also, the results show that the Cu(II) ions have preference for Mg(II) ions substitution. Sorption experiments were conducted in batch system. The effect of operating parameters (pH, contact time, initial concentration of Cu(II) ions and adsorbent dosage) on the adsorption capacity were investigated. The obtained experimental data were fitted by Langmuir and Freundlich isotherm models. The maximum adsorption capacity for Cu(II) ions calculated from Langmuir adsorption isotherm was 34.89 mg/g which is 15 to 35% higher than the capacity that other researchers reported previously for the same material and pollutant. These results are suggesting that sunflower seed husks have a potential to be applied as an effective adsorbent of copper ions from contaminated waters.",
publisher = "Univerzitet u Novom Sadu - Tehnološki fakultet, Novi Sad",
journal = "Acta Periodica Technologica",
title = "Adsorption of Cu(II) ions from synthetic solution by sunflower seed husks",
pages = "277-268",
volume = "50",
doi = "10.2298/APT1950268S",
url = "conv_1024"
}

Stanković, S., Šoštarić, T., Bugarčić, M., Janićijević, A., Pantović-Spajić, K.,& Lopičić, Z.. (2019). Adsorption of Cu(II) ions from synthetic solution by sunflower seed husks. in Acta Periodica Technologica
Univerzitet u Novom Sadu - Tehnološki fakultet, Novi Sad., 50, 268-277.
https://doi.org/10.2298/APT1950268S
conv_1024

Stanković S, Šoštarić T, Bugarčić M, Janićijević A, Pantović-Spajić K, Lopičić Z. Adsorption of Cu(II) ions from synthetic solution by sunflower seed husks. in Acta Periodica Technologica. 2019;50:268-277.
doi:10.2298/APT1950268S
conv_1024 .

Stanković, S., Šoštarić, Tatjana, Bugarčić, Mladen, Janićijević, A., Pantović-Spajić, Katarina, Lopičić, Zorica, "Adsorption of Cu(II) ions from synthetic solution by sunflower seed husks" in Acta Periodica Technologica, 50 (2019):268-277,
https://doi.org/10.2298/APT1950268S .,
conv_1024 .

TY  - JOUR
AU  - Sokić, Miroslav
AU  - Marković, Branislav
AU  - Pezo, Lato
AU  - Stanković, S.B.
AU  - Patarić, Aleksandra
AU  - Janjušević, Zoran
AU  - Lončar, B.Lj.
PY  - 2019
UR  - https://ritnms.itnms.ac.rs/handle/123456789/512
AB  - Hydrometallurgical processing of the copper concentrates is a promising alternative to the conventional pyrometallurgical production of copper due to significantly lower environmental impact, capital and operational costs. Development of the hydrometallurgical process for copper recovery from mineral concentrate requires extensive work in testing and optimization of operational parameters from laboratory to semi-industrial scale. Mathematical modelling of the copper leaching process can save human labour and time. Leaching of copper from chalcopyrite concentrate using sulphuric acid and sodium nitrate as an oxidant was tested, and the influence of temperature, particle size, stirring speed and concentrations of sulphuric acid and sodium nitrate were evaluated. Obtained results showed that increasing temperature and concentrations of sulphuric acid and sodium nitrate increase the leaching degree of copper, while increasing particle size and stirring speed reduce copper extraction. In this paper, second-order polynomial models (SOP) were applied to experimental data. Presented results show that mathematical models fit experimental data. The conclusion is that SOP models are a promising tool to be used for modelling leaching processes of metals.
PB  - Bulgarian Academy of Sciences
T2  - Bulgarian Chemical Communications
T1  - Copper leaching from chalcopyrite concentrate by sodium nitrate in sulphuric acid solution – chemometric approach
EP  - 463
IS  - 3
SP  - 457
VL  - 51
DO  - 10.34049/bcc.51.3.5119
UR  - conv_1022
ER  - 

@article{
author = "Sokić, Miroslav and Marković, Branislav and Pezo, Lato and Stanković, S.B. and Patarić, Aleksandra and Janjušević, Zoran and Lončar, B.Lj.",
year = "2019",
abstract = "Hydrometallurgical processing of the copper concentrates is a promising alternative to the conventional pyrometallurgical production of copper due to significantly lower environmental impact, capital and operational costs. Development of the hydrometallurgical process for copper recovery from mineral concentrate requires extensive work in testing and optimization of operational parameters from laboratory to semi-industrial scale. Mathematical modelling of the copper leaching process can save human labour and time. Leaching of copper from chalcopyrite concentrate using sulphuric acid and sodium nitrate as an oxidant was tested, and the influence of temperature, particle size, stirring speed and concentrations of sulphuric acid and sodium nitrate were evaluated. Obtained results showed that increasing temperature and concentrations of sulphuric acid and sodium nitrate increase the leaching degree of copper, while increasing particle size and stirring speed reduce copper extraction. In this paper, second-order polynomial models (SOP) were applied to experimental data. Presented results show that mathematical models fit experimental data. The conclusion is that SOP models are a promising tool to be used for modelling leaching processes of metals.",
publisher = "Bulgarian Academy of Sciences",
journal = "Bulgarian Chemical Communications",
title = "Copper leaching from chalcopyrite concentrate by sodium nitrate in sulphuric acid solution – chemometric approach",
pages = "463-457",
number = "3",
volume = "51",
doi = "10.34049/bcc.51.3.5119",
url = "conv_1022"
}

Sokić, M., Marković, B., Pezo, L., Stanković, S.B., Patarić, A., Janjušević, Z.,& Lončar, B.Lj.. (2019). Copper leaching from chalcopyrite concentrate by sodium nitrate in sulphuric acid solution – chemometric approach. in Bulgarian Chemical Communications
Bulgarian Academy of Sciences., 51(3), 457-463.
https://doi.org/10.34049/bcc.51.3.5119
conv_1022

Sokić M, Marković B, Pezo L, Stanković S, Patarić A, Janjušević Z, Lončar B. Copper leaching from chalcopyrite concentrate by sodium nitrate in sulphuric acid solution – chemometric approach. in Bulgarian Chemical Communications. 2019;51(3):457-463.
doi:10.34049/bcc.51.3.5119
conv_1022 .

Sokić, Miroslav, Marković, Branislav, Pezo, Lato, Stanković, S.B., Patarić, Aleksandra, Janjušević, Zoran, Lončar, B.Lj., "Copper leaching from chalcopyrite concentrate by sodium nitrate in sulphuric acid solution – chemometric approach" in Bulgarian Chemical Communications, 51, no. 3 (2019):457-463,
https://doi.org/10.34049/bcc.51.3.5119 .,
conv_1022 .

TY  - JOUR
AU  - Sokić, Miroslav
AU  - Radovanović, Dragana
AU  - Marković, Branislav
AU  - Stojanović, Jovica
AU  - Kamberović, Željko
AU  - Petronijević, Nela
AU  - Stanković, Srđan
PY  - 2019
UR  - https://ritnms.itnms.ac.rs/handle/123456789/508
AB  - Since commissioning in 1961, the copper mine Majdanpek, a part of the Mining and Smelting Complex Bor (RTB Bor), produced approximately 378 million tons of flotation tailings. Semiquantitative mineralogical analysis of the flotation tailings revealed significant content of carbonate minerals (approximately 20-25 %), indicating high acid neutralization capacity. Also, approximately 70 % of copper is in the form of the oxide mineral cuprite (Cu2O). Copper can be easily leached from cuprite by using sulphuric acid. The RTB Bor copper smelter generates 8.7 m(3)h(-1) of extremely acidic waste effluent (142.4 kgm(-3) of sulphuric acid, pH - 0.464) with relatively high concentrations of dissolved metals and metalloids (Cu, Fe, Zn, Pb and As). The effluent is currently treated with hydrated lime. The present study focused on application of flotation tailings as a neutralizing agent for acidic effluents. Laboratory experiments followed by computer simulation of the industrial process showed that 99% of the acid can be neutralized with flotation tailings in a series of six reactors resulting in the final copper concentration of 1.55 gL(-1). Benefits of the proposed process are: lower environmental impact of the process and reduced costs of neutralization of the acidic effluent from the copper smelter.
PB  - Savez hemijskih inženjera, Beograd
T2  - Hemijska industrija
T1  - Treatment of the acidic effluent from a copper smelter by flotation tailings
EP  - 124
IS  - 2
SP  - 115
VL  - 73
DO  - 10.2298/HEMIND181009010S
UR  - conv_850
ER  - 

@article{
author = "Sokić, Miroslav and Radovanović, Dragana and Marković, Branislav and Stojanović, Jovica and Kamberović, Željko and Petronijević, Nela and Stanković, Srđan",
year = "2019",
abstract = "Since commissioning in 1961, the copper mine Majdanpek, a part of the Mining and Smelting Complex Bor (RTB Bor), produced approximately 378 million tons of flotation tailings. Semiquantitative mineralogical analysis of the flotation tailings revealed significant content of carbonate minerals (approximately 20-25 %), indicating high acid neutralization capacity. Also, approximately 70 % of copper is in the form of the oxide mineral cuprite (Cu2O). Copper can be easily leached from cuprite by using sulphuric acid. The RTB Bor copper smelter generates 8.7 m(3)h(-1) of extremely acidic waste effluent (142.4 kgm(-3) of sulphuric acid, pH - 0.464) with relatively high concentrations of dissolved metals and metalloids (Cu, Fe, Zn, Pb and As). The effluent is currently treated with hydrated lime. The present study focused on application of flotation tailings as a neutralizing agent for acidic effluents. Laboratory experiments followed by computer simulation of the industrial process showed that 99% of the acid can be neutralized with flotation tailings in a series of six reactors resulting in the final copper concentration of 1.55 gL(-1). Benefits of the proposed process are: lower environmental impact of the process and reduced costs of neutralization of the acidic effluent from the copper smelter.",
publisher = "Savez hemijskih inženjera, Beograd",
journal = "Hemijska industrija",
title = "Treatment of the acidic effluent from a copper smelter by flotation tailings",
pages = "124-115",
number = "2",
volume = "73",
doi = "10.2298/HEMIND181009010S",
url = "conv_850"
}

Sokić, M., Radovanović, D., Marković, B., Stojanović, J., Kamberović, Ž., Petronijević, N.,& Stanković, S.. (2019). Treatment of the acidic effluent from a copper smelter by flotation tailings. in Hemijska industrija
Savez hemijskih inženjera, Beograd., 73(2), 115-124.
https://doi.org/10.2298/HEMIND181009010S
conv_850

Sokić M, Radovanović D, Marković B, Stojanović J, Kamberović Ž, Petronijević N, Stanković S. Treatment of the acidic effluent from a copper smelter by flotation tailings. in Hemijska industrija. 2019;73(2):115-124.
doi:10.2298/HEMIND181009010S
conv_850 .

Sokić, Miroslav, Radovanović, Dragana, Marković, Branislav, Stojanović, Jovica, Kamberović, Željko, Petronijević, Nela, Stanković, Srđan, "Treatment of the acidic effluent from a copper smelter by flotation tailings" in Hemijska industrija, 73, no. 2 (2019):115-124,
https://doi.org/10.2298/HEMIND181009010S .,
conv_850 .

TY  - JOUR
AU  - Pantović-Spajić, Katarina
AU  - Sakan, S.
AU  - Đorđević, D.
AU  - Šoštarić, Tatjana
AU  - Lopičić, Zorica
AU  - Janićijević, A.
AU  - Stojanović, Ksenija
PY  - 2019
UR  - https://ritnms.itnms.ac.rs/handle/123456789/505
AB  - The purpose of this paper was to investigate the effectiveness of three different extraction agents for the extraction of 25 elements from sediment samples collected from 4 artificial lakes and 12 rivers in Serbia (33 samples in total). The extraction efficiency of the agents was evaluated by its ability to extract the highest quantity of the elements. For that purpose, three acids (1M HCl, 2M HNO3 and 0.43M CH3COOH) have been used. Inductively coupled plasma atomic emission spectrometry (ICP-OES) was used for quantitative determination of following elements: Al, As, B, Ba, Be, Bi, Ca, Cd, Cr, Co, Cu, Fe, Hg, K, Li, Mg, Mn, Ni, Na, Pb, Sb, Se, Sr, V, and Zn. The extraction with 1M HCl has shown the best results for the majority of investigated elements (especially Sr, Mn and Ca). Antimony (Sb) was detected only after extraction with 0.43M CH3COOOH, while selenium (Se) could not be detected when 2M HNO3 was applied as extraction agents. The present study could be very useful for choosing a suitable method for specific elements and also can be helpful in the evaluation of the contaminants in freshwater sediments in Serbia. This might contribute to environmental risk assessment of the present elements.
PB  - Univerzitet u Novom Sadu - Tehnološki fakultet, Novi Sad
T2  - Acta Periodica Technologica
T1  - Comparison of extraction agents for metal determination in sediments from artificial lakes and rivers in Serbia
EP  - 196
SP  - 189
VL  - 50
DO  - 10.2298/APT1950189P
UR  - conv_1023
ER  - 

@article{
author = "Pantović-Spajić, Katarina and Sakan, S. and Đorđević, D. and Šoštarić, Tatjana and Lopičić, Zorica and Janićijević, A. and Stojanović, Ksenija",
year = "2019",
abstract = "The purpose of this paper was to investigate the effectiveness of three different extraction agents for the extraction of 25 elements from sediment samples collected from 4 artificial lakes and 12 rivers in Serbia (33 samples in total). The extraction efficiency of the agents was evaluated by its ability to extract the highest quantity of the elements. For that purpose, three acids (1M HCl, 2M HNO3 and 0.43M CH3COOH) have been used. Inductively coupled plasma atomic emission spectrometry (ICP-OES) was used for quantitative determination of following elements: Al, As, B, Ba, Be, Bi, Ca, Cd, Cr, Co, Cu, Fe, Hg, K, Li, Mg, Mn, Ni, Na, Pb, Sb, Se, Sr, V, and Zn. The extraction with 1M HCl has shown the best results for the majority of investigated elements (especially Sr, Mn and Ca). Antimony (Sb) was detected only after extraction with 0.43M CH3COOOH, while selenium (Se) could not be detected when 2M HNO3 was applied as extraction agents. The present study could be very useful for choosing a suitable method for specific elements and also can be helpful in the evaluation of the contaminants in freshwater sediments in Serbia. This might contribute to environmental risk assessment of the present elements.",
publisher = "Univerzitet u Novom Sadu - Tehnološki fakultet, Novi Sad",
journal = "Acta Periodica Technologica",
title = "Comparison of extraction agents for metal determination in sediments from artificial lakes and rivers in Serbia",
pages = "196-189",
volume = "50",
doi = "10.2298/APT1950189P",
url = "conv_1023"
}

Pantović-Spajić, K., Sakan, S., Đorđević, D., Šoštarić, T., Lopičić, Z., Janićijević, A.,& Stojanović, K.. (2019). Comparison of extraction agents for metal determination in sediments from artificial lakes and rivers in Serbia. in Acta Periodica Technologica
Univerzitet u Novom Sadu - Tehnološki fakultet, Novi Sad., 50, 189-196.
https://doi.org/10.2298/APT1950189P
conv_1023

Pantović-Spajić K, Sakan S, Đorđević D, Šoštarić T, Lopičić Z, Janićijević A, Stojanović K. Comparison of extraction agents for metal determination in sediments from artificial lakes and rivers in Serbia. in Acta Periodica Technologica. 2019;50:189-196.
doi:10.2298/APT1950189P
conv_1023 .

Pantović-Spajić, Katarina, Sakan, S., Đorđević, D., Šoštarić, Tatjana, Lopičić, Zorica, Janićijević, A., Stojanović, Ksenija, "Comparison of extraction agents for metal determination in sediments from artificial lakes and rivers in Serbia" in Acta Periodica Technologica, 50 (2019):189-196,
https://doi.org/10.2298/APT1950189P .,
conv_1023 .

TY  - JOUR
AU  - Janjušević, Zoran
AU  - Matković, Vladislav
AU  - Bugarčić, Mladen
AU  - Sokić, Miroslav
AU  - Marković, Branislav
AU  - Manojlović, Vaso
AU  - Patarić, Aleksandra
PY  - 2018
UR  - https://ritnms.itnms.ac.rs/handle/123456789/486
AB  - U istraživačkom radu opisan je komercializovan reciklažni proces prerade otpadnog rastvora iz postrojenja za proizvodnju sijaličnih vlakana od volframa radi izdvajanja molibden (VI)-oksida i njegovom daljem iskorišćavanju kao legirajućeg agensa sivog liva. U prvom delu izvršena je neutralizacija utrošene kiseline, koja u sebi sadrži izvesne količine molibdena, uz pomoć rastvora amonijaka, a potom kristalizacija i filtracija amonijum-molibdata, njegovo sušenje i prženje u cilju dobijanja praha molibdentrioksida tehničke čistoće (maseni udeo molibdena 59,2 mas%). U drugom delu izvršeno je legiranje sivog liva uz pomoć MoO3 u indukcionoj peći. Finalni proizvod je legura železa sa povećanom tvrdoćom uz postignut visok stepen usvajanja molibdena u leguri (čak do 86%).
AB  - The present work reports the commercialization of a recycling process of spent acid from filament tungsten wire plant to recover molybdenum (VI)-oxide and further utilizing this product for alloying cast iron. First part of the process consists of ammonia gas neutralization of spent acid containing molybdenum, crystallization and filtration of ammonium molybdate, drying and roasting to produce a commercial grade molybdic-trioxide powder (molybdenum mass fraction 59.2 mas%). Second part of the process consists of grey cast alloying with MoO3 in inducing furnace. Final product was hardened iron alloy with high yield of molybdenum recovery (up to 86 %).
PB  - Inženjersko društvo za koroziju, Beograd
T2  - Zaštita materijala
T1  - Valorizacija molibdena iz otpadnog molibdenskog rastvora za legiranje sivog liva
T1  - Molybdenum recovery as alloying agent from waste molybdenum solution
EP  - 107
IS  - 1
SP  - 100
VL  - 59
DO  - 10.5937/ZasMat1801102J
UR  - conv_155
ER  - 

@article{
author = "Janjušević, Zoran and Matković, Vladislav and Bugarčić, Mladen and Sokić, Miroslav and Marković, Branislav and Manojlović, Vaso and Patarić, Aleksandra",
year = "2018",
abstract = "U istraživačkom radu opisan je komercializovan reciklažni proces prerade otpadnog rastvora iz postrojenja za proizvodnju sijaličnih vlakana od volframa radi izdvajanja molibden (VI)-oksida i njegovom daljem iskorišćavanju kao legirajućeg agensa sivog liva. U prvom delu izvršena je neutralizacija utrošene kiseline, koja u sebi sadrži izvesne količine molibdena, uz pomoć rastvora amonijaka, a potom kristalizacija i filtracija amonijum-molibdata, njegovo sušenje i prženje u cilju dobijanja praha molibdentrioksida tehničke čistoće (maseni udeo molibdena 59,2 mas%). U drugom delu izvršeno je legiranje sivog liva uz pomoć MoO3 u indukcionoj peći. Finalni proizvod je legura železa sa povećanom tvrdoćom uz postignut visok stepen usvajanja molibdena u leguri (čak do 86%)., The present work reports the commercialization of a recycling process of spent acid from filament tungsten wire plant to recover molybdenum (VI)-oxide and further utilizing this product for alloying cast iron. First part of the process consists of ammonia gas neutralization of spent acid containing molybdenum, crystallization and filtration of ammonium molybdate, drying and roasting to produce a commercial grade molybdic-trioxide powder (molybdenum mass fraction 59.2 mas%). Second part of the process consists of grey cast alloying with MoO3 in inducing furnace. Final product was hardened iron alloy with high yield of molybdenum recovery (up to 86 %).",
publisher = "Inženjersko društvo za koroziju, Beograd",
journal = "Zaštita materijala",
title = "Valorizacija molibdena iz otpadnog molibdenskog rastvora za legiranje sivog liva, Molybdenum recovery as alloying agent from waste molybdenum solution",
pages = "107-100",
number = "1",
volume = "59",
doi = "10.5937/ZasMat1801102J",
url = "conv_155"
}

Janjušević, Z., Matković, V., Bugarčić, M., Sokić, M., Marković, B., Manojlović, V.,& Patarić, A.. (2018). Valorizacija molibdena iz otpadnog molibdenskog rastvora za legiranje sivog liva. in Zaštita materijala
Inženjersko društvo za koroziju, Beograd., 59(1), 100-107.
https://doi.org/10.5937/ZasMat1801102J
conv_155

Janjušević Z, Matković V, Bugarčić M, Sokić M, Marković B, Manojlović V, Patarić A. Valorizacija molibdena iz otpadnog molibdenskog rastvora za legiranje sivog liva. in Zaštita materijala. 2018;59(1):100-107.
doi:10.5937/ZasMat1801102J
conv_155 .

Janjušević, Zoran, Matković, Vladislav, Bugarčić, Mladen, Sokić, Miroslav, Marković, Branislav, Manojlović, Vaso, Patarić, Aleksandra, "Valorizacija molibdena iz otpadnog molibdenskog rastvora za legiranje sivog liva" in Zaštita materijala, 59, no. 1 (2018):100-107,
https://doi.org/10.5937/ZasMat1801102J .,
conv_155 .

TY  - JOUR
AU  - Bugarčić, Mladen
AU  - Milivojević, Milan
AU  - Marinković, Aleksandar D.
AU  - Marković, Branislav
AU  - Sokić, Miroslav
AU  - Petronijević, Nela
AU  - Stojanović, Jovica
PY  - 2018
UR  - https://ritnms.itnms.ac.rs/handle/123456789/477
AB  - This paper aims to determine the potential of volcanic rock found in Etna valley as an adsorbent of heavy metals in anionic form (chromates, arsenates, and selenates). Characterization of the volcanic rock was done with chemical methods (AAS, AES, gravimetric analysis, XRF), physicochemical methods (XRD, FTIR, SEM, DTA, DTG) and physical methods (porosity measurement, Microscopy in transmitted light). Also, equilibrium adsorption capacity was determined. All the results of adsorption capacity were satisfying considering the mineral composition, granulation, and porosity. The removal efficiency of chromates was the biggest (above 30 %) with adsorption capacity of 15.6 mg Cr g(-1). The lowest adsorption efficiency was with the selenates, approximately 18 %.
PB  - Savez inženjera metalurgije Srbije, Beograd
T2  - Metallurgical & Materials Engineering
T1  - Application of raw volcanic rock found in etna valley as an adsorbent of chromates, arsenates and selenates
EP  - 144
IS  - 2
SP  - 133
VL  - 24
DO  - 10.30544/366
UR  - conv_826
ER  - 

@article{
author = "Bugarčić, Mladen and Milivojević, Milan and Marinković, Aleksandar D. and Marković, Branislav and Sokić, Miroslav and Petronijević, Nela and Stojanović, Jovica",
year = "2018",
abstract = "This paper aims to determine the potential of volcanic rock found in Etna valley as an adsorbent of heavy metals in anionic form (chromates, arsenates, and selenates). Characterization of the volcanic rock was done with chemical methods (AAS, AES, gravimetric analysis, XRF), physicochemical methods (XRD, FTIR, SEM, DTA, DTG) and physical methods (porosity measurement, Microscopy in transmitted light). Also, equilibrium adsorption capacity was determined. All the results of adsorption capacity were satisfying considering the mineral composition, granulation, and porosity. The removal efficiency of chromates was the biggest (above 30 %) with adsorption capacity of 15.6 mg Cr g(-1). The lowest adsorption efficiency was with the selenates, approximately 18 %.",
publisher = "Savez inženjera metalurgije Srbije, Beograd",
journal = "Metallurgical & Materials Engineering",
title = "Application of raw volcanic rock found in etna valley as an adsorbent of chromates, arsenates and selenates",
pages = "144-133",
number = "2",
volume = "24",
doi = "10.30544/366",
url = "conv_826"
}

Bugarčić, M., Milivojević, M., Marinković, A. D., Marković, B., Sokić, M., Petronijević, N.,& Stojanović, J.. (2018). Application of raw volcanic rock found in etna valley as an adsorbent of chromates, arsenates and selenates. in Metallurgical & Materials Engineering
Savez inženjera metalurgije Srbije, Beograd., 24(2), 133-144.
https://doi.org/10.30544/366
conv_826

Bugarčić M, Milivojević M, Marinković AD, Marković B, Sokić M, Petronijević N, Stojanović J. Application of raw volcanic rock found in etna valley as an adsorbent of chromates, arsenates and selenates. in Metallurgical & Materials Engineering. 2018;24(2):133-144.
doi:10.30544/366
conv_826 .

Bugarčić, Mladen, Milivojević, Milan, Marinković, Aleksandar D., Marković, Branislav, Sokić, Miroslav, Petronijević, Nela, Stojanović, Jovica, "Application of raw volcanic rock found in etna valley as an adsorbent of chromates, arsenates and selenates" in Metallurgical & Materials Engineering, 24, no. 2 (2018):133-144,
https://doi.org/10.30544/366 .,
conv_826 .

TY  - JOUR
AU  - Sokić, Miroslav
AU  - Stojanović, Jovica
AU  - Marković, Branislav
AU  - Bugarčić, Mladen
AU  - Štrbac, Nada
AU  - Kamberović, Željko
AU  - Manojlović, Vaso
PY  - 2017
UR  - https://ritnms.itnms.ac.rs/handle/123456789/983
AB  - U radu su prikazani rezultati ispitivanja uticaja strukturno-teksturnih karakteristika sulfidnih
minerala na njihovo luženje iz polimetaličnog koncentrata rastvorom sumporne kiseline
i natrijum-nitrata. Za određivanja karakteristika sulfidnih minerala u polaznom koncentratu
i čvrstom ostatku luženja korišćena je hemijska, rendgenska difrakciona analiza na
polikristalnom uzorku (XRD), kvalitativna i kvantitativna mikroskopska i SEM/EDX analiza. U
polimetaličnom koncentratu je utvrđeno prisustvo halkopirita, sfalerita, galenita, pirotina i
minerala jalovine. Tokom luženja Pb–Zn–Cu sulfidnog koncentrata rastvorom natrijumnitrata
i sumporne kiseline, deo sulfidnih minerala ostaje neizlužen i zaostaje u čvrstim
ostacima luženja. Olovo, u obliku slaborastvornog olovo-sulfata (anglezita), ostaje u neizluženom
ostatku. Sadržaj sulfidnih minerala u neizluženom ostatku iznosi 35%, u kojem se
54,7% halkopirita, 31,9% sfalerita, 8,2% galenita i 37,6% pirotina javlja u vidu slobodnih
mineralnih zrna sa intenzivnom korozijom njihovih ivica i pojavom elementarnog sumpora
duž njihovih oboda. Strukturni sklop sulfidnih mineralnih zrna u polimetaličnom koncentratu
je povolјan i nije razlog prisustva neizluženih sulfidnih minerala u čvrstim ostacima
luženja. Razlog za to je elementarni sumpor koji nastaje u procesu luženja, taloži se na
površini sulfidnih mineralnih zrna i otežava kontakt sulfidnih minerala i sredstva za luženje.
AB  - In this paper, the influence of structural and textural characteristics of sulfide
minerals on their leaching from a polymetallic concentrate by sulfuric acid and
sodium nitrate solution is presented. The starting material was Pb–Zn–Cu sulphide
polymetallic concentrate enriched during the flotation of a polymetallic ore
in the ″Rudnik″ flotation plant (Rudnik – Serbia). Leaching experiments were
carried out in a closed glass reactor, which provides stable hermetic conditions
and allows heating at constant temperature. Chemical, XRD, qualitative and
quantitative microscopic and SEM/EDX analyses were used to characterizes
samples of the polymetallic concentrate and leach residue. It was determined that
chalcopyrite, sphalerite, galena, pyrrhotite and quartz were present in the polymetallic
concentrate. The content of sulphide minerals was 69.5%, of which 60.9%
occurred as liberated grains: 88.3% of chalcopyrite, 59.3% of sphalerite, 25.1% of
galena and 51.6% of pirrhotite. The rest of chalcopyrite, sphalerite, galena and
pirrhotite grains were in the forms of inclusions, impregnations, and simple and
complex intergrowths. During the leaching process by sodium nitrate and sulphuric
acid solution, it was shown previously that the leaching rate of sulphide
minerals decreased with time while a part of the sulphide minerals remained in
the leach residue. After leaching at 80 °C for 120 min, the yields were 69.8, 82.7
and 67.1% for Cu, Zn and Fe, respectively. Lead, in the form of insoluble anglesite,
remained in the leach residue. In addition to the anglesite, unleached sulfide minerals
and quartz, elemental sulfur was found in the solid residue. The content of
sulphide minerals was 35% of which 33.7% minerals occur independently. In specific,
54.7% of chalcopyrite, 31.9% of sphalerite, 8.2% of galena and 37.6% of
pyrrhotite appear as separate grains with highly corroded surfaces. Therefore, the
structural assembly of sulphide grains in the polymetallic concentrate is favourable
and it is not the reason for the observed decrease in the leaching rate in the
final process stages. The obtained findings may be explained by the presence of
elemental sulphur that is formed during the reaction and precipitated at the grain
surfaces, thus creating a diffusion barrier for the leach solution.
PB  - Belgrade :  Association of the Chemical Engineers of Serbia
T2  - Hemijska industrija
T1  - Uticaj strukturno-teksturnih karakteristika sulfidnih mineralа na njihovo luženje iz polimetaličnog koncentrata rastvorom natrijum-nitrata i sumporne kiseline
EP  - 469
IS  - 6
SP  - 461
VL  - 71
DO  - 10.2298/HEMIND161130006S
ER  - 

@article{
author = "Sokić, Miroslav and Stojanović, Jovica and Marković, Branislav and Bugarčić, Mladen and Štrbac, Nada and Kamberović, Željko and Manojlović, Vaso",
year = "2017",
abstract = "U radu su prikazani rezultati ispitivanja uticaja strukturno-teksturnih karakteristika sulfidnih
minerala na njihovo luženje iz polimetaličnog koncentrata rastvorom sumporne kiseline
i natrijum-nitrata. Za određivanja karakteristika sulfidnih minerala u polaznom koncentratu
i čvrstom ostatku luženja korišćena je hemijska, rendgenska difrakciona analiza na
polikristalnom uzorku (XRD), kvalitativna i kvantitativna mikroskopska i SEM/EDX analiza. U
polimetaličnom koncentratu je utvrđeno prisustvo halkopirita, sfalerita, galenita, pirotina i
minerala jalovine. Tokom luženja Pb–Zn–Cu sulfidnog koncentrata rastvorom natrijumnitrata
i sumporne kiseline, deo sulfidnih minerala ostaje neizlužen i zaostaje u čvrstim
ostacima luženja. Olovo, u obliku slaborastvornog olovo-sulfata (anglezita), ostaje u neizluženom
ostatku. Sadržaj sulfidnih minerala u neizluženom ostatku iznosi 35%, u kojem se
54,7% halkopirita, 31,9% sfalerita, 8,2% galenita i 37,6% pirotina javlja u vidu slobodnih
mineralnih zrna sa intenzivnom korozijom njihovih ivica i pojavom elementarnog sumpora
duž njihovih oboda. Strukturni sklop sulfidnih mineralnih zrna u polimetaličnom koncentratu
je povolјan i nije razlog prisustva neizluženih sulfidnih minerala u čvrstim ostacima
luženja. Razlog za to je elementarni sumpor koji nastaje u procesu luženja, taloži se na
površini sulfidnih mineralnih zrna i otežava kontakt sulfidnih minerala i sredstva za luženje., In this paper, the influence of structural and textural characteristics of sulfide
minerals on their leaching from a polymetallic concentrate by sulfuric acid and
sodium nitrate solution is presented. The starting material was Pb–Zn–Cu sulphide
polymetallic concentrate enriched during the flotation of a polymetallic ore
in the ″Rudnik″ flotation plant (Rudnik – Serbia). Leaching experiments were
carried out in a closed glass reactor, which provides stable hermetic conditions
and allows heating at constant temperature. Chemical, XRD, qualitative and
quantitative microscopic and SEM/EDX analyses were used to characterizes
samples of the polymetallic concentrate and leach residue. It was determined that
chalcopyrite, sphalerite, galena, pyrrhotite and quartz were present in the polymetallic
concentrate. The content of sulphide minerals was 69.5%, of which 60.9%
occurred as liberated grains: 88.3% of chalcopyrite, 59.3% of sphalerite, 25.1% of
galena and 51.6% of pirrhotite. The rest of chalcopyrite, sphalerite, galena and
pirrhotite grains were in the forms of inclusions, impregnations, and simple and
complex intergrowths. During the leaching process by sodium nitrate and sulphuric
acid solution, it was shown previously that the leaching rate of sulphide
minerals decreased with time while a part of the sulphide minerals remained in
the leach residue. After leaching at 80 °C for 120 min, the yields were 69.8, 82.7
and 67.1% for Cu, Zn and Fe, respectively. Lead, in the form of insoluble anglesite,
remained in the leach residue. In addition to the anglesite, unleached sulfide minerals
and quartz, elemental sulfur was found in the solid residue. The content of
sulphide minerals was 35% of which 33.7% minerals occur independently. In specific,
54.7% of chalcopyrite, 31.9% of sphalerite, 8.2% of galena and 37.6% of
pyrrhotite appear as separate grains with highly corroded surfaces. Therefore, the
structural assembly of sulphide grains in the polymetallic concentrate is favourable
and it is not the reason for the observed decrease in the leaching rate in the
final process stages. The obtained findings may be explained by the presence of
elemental sulphur that is formed during the reaction and precipitated at the grain
surfaces, thus creating a diffusion barrier for the leach solution.",
publisher = "Belgrade :  Association of the Chemical Engineers of Serbia",
journal = "Hemijska industrija",
title = "Uticaj strukturno-teksturnih karakteristika sulfidnih mineralа na njihovo luženje iz polimetaličnog koncentrata rastvorom natrijum-nitrata i sumporne kiseline",
pages = "469-461",
number = "6",
volume = "71",
doi = "10.2298/HEMIND161130006S"
}

Sokić, M., Stojanović, J., Marković, B., Bugarčić, M., Štrbac, N., Kamberović, Ž.,& Manojlović, V.. (2017). Uticaj strukturno-teksturnih karakteristika sulfidnih mineralа na njihovo luženje iz polimetaličnog koncentrata rastvorom natrijum-nitrata i sumporne kiseline. in Hemijska industrija
Belgrade :  Association of the Chemical Engineers of Serbia., 71(6), 461-469.
https://doi.org/10.2298/HEMIND161130006S

Sokić M, Stojanović J, Marković B, Bugarčić M, Štrbac N, Kamberović Ž, Manojlović V. Uticaj strukturno-teksturnih karakteristika sulfidnih mineralа na njihovo luženje iz polimetaličnog koncentrata rastvorom natrijum-nitrata i sumporne kiseline. in Hemijska industrija. 2017;71(6):461-469.
doi:10.2298/HEMIND161130006S .

Sokić, Miroslav, Stojanović, Jovica, Marković, Branislav, Bugarčić, Mladen, Štrbac, Nada, Kamberović, Željko, Manojlović, Vaso, "Uticaj strukturno-teksturnih karakteristika sulfidnih mineralа na njihovo luženje iz polimetaličnog koncentrata rastvorom natrijum-nitrata i sumporne kiseline" in Hemijska industrija, 71, no. 6 (2017):461-469,
https://doi.org/10.2298/HEMIND161130006S . .

TY  - CONF
AU  - Sokić, Miroslav
AU  - Marković, Branislav
AU  - Štrbac, Nada
AU  - Kamberović, Željko
AU  - Manojlović, Vaso
AU  - Matković, Vladislav
AU  - Bugarčić, Mladen
PY  - 2017
UR  - https://ritnms.itnms.ac.rs/handle/123456789/678
AB  - The determination of mechanism of the polymetallic concentrate leaching with sulfuric
acid and hydrogen peroxide was done based on the characterization of the starting
concentrate and leach residues. The application of XRD and thermal analysis on the
leaching mechanism determination was done. The phase content of concentrate and leach
residues were determined by X-ray analysis using diffractometer PHILIPS PW-1710. DTA
and TG analysis were performed in air atmosphere up to 1173 K on NETZSH, model 409
EP, device.
The polymetallic concentrate, used in experiments, has the following chemical
composition (in wt. %): Cu-8.92, Zn-8.79; Pb-12.66, Fe-19.80 and S-21.4. X-ray phase
analysis of the concentrate reveals that the sample contains chalcopyrite, sphalerite, galena
pyrhotite and quartz (Fig. a). On Fig. b the DTA and TG curves of polymetallic concentrate
are shown. Curves include two parts: first, a low temperature, which correspond to the
sulfides oxidation (the mass increase on the TG, and exothermic peaks on the DTA); and
second which correspond to the dissociation of sulphates and oxysulphates (the mass loss
on the TG, and endothermic peaks on the DTA).
The phases identified in the leach residue by XRD were elemental sulphur, anglesite,
chalcopyrite, sphalerite, galena pyrhotite and quartz (Fig. c), which confirms that the
elemental sulphur is formed during leaching. In Fig. d the TG-DTA curve of the leach
residue are shown. On DTA curve on the temperature of 118 oC, the endothermic peak as a
result of elemental sulfur melting is clearly visible. Then, in the range of 250-350 oC,
weight loss as a consequence of the oxidation of sulfur to SO2 gas occurs. The loss of mass
due to combustion of sulfur on Fig. d is smaller than the sulfide sulfur which is oxidized
during the leaching process, which indicates that the sulfur from sulfides is oxidised both
to the sulfate and to the elemental form. The mass increase followed by exothermic effects
in the range of 400-700 oC is a result of the oxidation of unleached sulphides in the solid
residues. At temperatures above 720 °C weight loss occurs as a result of dissociation of
sulphate and oxysulphates of lead, zinc, copper and iron with endothermic peaks on the
DTA curve. XRD and DTA/TG studies have contributed in determining the mechanism of
polymetallic concentrate leaching process in the system H2SO4-H2O2-H2O:CuFeS2 + 5/2H2O2 + 5/2H2SO4 = CuSO4 + 1/2Fe2(SO4)3 + 2S0 + 5H2O
(1)
CuFeS2 + 17/2H2O2 + 1/2H2SO4 = CuSO4 + 1/2Fe2(SO4)3 + 9H2O(2)
ZnS + H2O2 + H2SO4 = ZnSO4 + S0 + 2H2O (3)
ZnS + 4H2O2 = ZnSO4 + 4H2O (4)
PbS + H2O2 + H2SO4 = PbSO4 + S0 + 2H2O (5)
PbS + 4H2O2 = PbSO4 + 4H2O (6)
PB  - Kosovska Mitrovica : Fakultet Tehničkih nauka
C3  - Osmi simpozijum o termodinamici i faznim dijagramima
T1  - Mechanism of polymetallic concentrate leaching with sulfuric acid and hydrogen peroxide solution
EP  - 88
SP  - 86
ER  - 

@conference{
author = "Sokić, Miroslav and Marković, Branislav and Štrbac, Nada and Kamberović, Željko and Manojlović, Vaso and Matković, Vladislav and Bugarčić, Mladen",
year = "2017",
abstract = "The determination of mechanism of the polymetallic concentrate leaching with sulfuric
acid and hydrogen peroxide was done based on the characterization of the starting
concentrate and leach residues. The application of XRD and thermal analysis on the
leaching mechanism determination was done. The phase content of concentrate and leach
residues were determined by X-ray analysis using diffractometer PHILIPS PW-1710. DTA
and TG analysis were performed in air atmosphere up to 1173 K on NETZSH, model 409
EP, device.
The polymetallic concentrate, used in experiments, has the following chemical
composition (in wt. %): Cu-8.92, Zn-8.79; Pb-12.66, Fe-19.80 and S-21.4. X-ray phase
analysis of the concentrate reveals that the sample contains chalcopyrite, sphalerite, galena
pyrhotite and quartz (Fig. a). On Fig. b the DTA and TG curves of polymetallic concentrate
are shown. Curves include two parts: first, a low temperature, which correspond to the
sulfides oxidation (the mass increase on the TG, and exothermic peaks on the DTA); and
second which correspond to the dissociation of sulphates and oxysulphates (the mass loss
on the TG, and endothermic peaks on the DTA).
The phases identified in the leach residue by XRD were elemental sulphur, anglesite,
chalcopyrite, sphalerite, galena pyrhotite and quartz (Fig. c), which confirms that the
elemental sulphur is formed during leaching. In Fig. d the TG-DTA curve of the leach
residue are shown. On DTA curve on the temperature of 118 oC, the endothermic peak as a
result of elemental sulfur melting is clearly visible. Then, in the range of 250-350 oC,
weight loss as a consequence of the oxidation of sulfur to SO2 gas occurs. The loss of mass
due to combustion of sulfur on Fig. d is smaller than the sulfide sulfur which is oxidized
during the leaching process, which indicates that the sulfur from sulfides is oxidised both
to the sulfate and to the elemental form. The mass increase followed by exothermic effects
in the range of 400-700 oC is a result of the oxidation of unleached sulphides in the solid
residues. At temperatures above 720 °C weight loss occurs as a result of dissociation of
sulphate and oxysulphates of lead, zinc, copper and iron with endothermic peaks on the
DTA curve. XRD and DTA/TG studies have contributed in determining the mechanism of
polymetallic concentrate leaching process in the system H2SO4-H2O2-H2O:CuFeS2 + 5/2H2O2 + 5/2H2SO4 = CuSO4 + 1/2Fe2(SO4)3 + 2S0 + 5H2O
(1)
CuFeS2 + 17/2H2O2 + 1/2H2SO4 = CuSO4 + 1/2Fe2(SO4)3 + 9H2O(2)
ZnS + H2O2 + H2SO4 = ZnSO4 + S0 + 2H2O (3)
ZnS + 4H2O2 = ZnSO4 + 4H2O (4)
PbS + H2O2 + H2SO4 = PbSO4 + S0 + 2H2O (5)
PbS + 4H2O2 = PbSO4 + 4H2O (6)",
publisher = "Kosovska Mitrovica : Fakultet Tehničkih nauka",
journal = "Osmi simpozijum o termodinamici i faznim dijagramima",
title = "Mechanism of polymetallic concentrate leaching with sulfuric acid and hydrogen peroxide solution",
pages = "88-86"
}

Sokić, M., Marković, B., Štrbac, N., Kamberović, Ž., Manojlović, V., Matković, V.,& Bugarčić, M.. (2017). Mechanism of polymetallic concentrate leaching with sulfuric acid and hydrogen peroxide solution. in Osmi simpozijum o termodinamici i faznim dijagramima
Kosovska Mitrovica : Fakultet Tehničkih nauka., 86-88.

Sokić M, Marković B, Štrbac N, Kamberović Ž, Manojlović V, Matković V, Bugarčić M. Mechanism of polymetallic concentrate leaching with sulfuric acid and hydrogen peroxide solution. in Osmi simpozijum o termodinamici i faznim dijagramima. 2017;:86-88..

Sokić, Miroslav, Marković, Branislav, Štrbac, Nada, Kamberović, Željko, Manojlović, Vaso, Matković, Vladislav, Bugarčić, Mladen, "Mechanism of polymetallic concentrate leaching with sulfuric acid and hydrogen peroxide solution" in Osmi simpozijum o termodinamici i faznim dijagramima (2017):86-88.

TY  - CONF
AU  - Sokić, Miroslav
AU  - Marković, Branislav
AU  - Kamberović, Željko
AU  - Štrbac, Nada
AU  - Matković, Vladislav
AU  - Manojlović, Vaso
AU  - Bugarčić, Mladen
PY  - 2017
UR  - https://ritnms.itnms.ac.rs/handle/123456789/674
AB  - Zinc is extracted from sphalerite and complex concentrates by pyrometallurgical or hydrometallurgical processes, whereby the hydrometallurgical processes
have received considerable attention in recent years. Thair application provide
better metal recoveries and reduced emission of gaseous and toxic agenses in the
environment. This paper studies the leaching process of the sphalerite with sodium
nitrate in sulphuric acid solution. Chemical reactions of leaching and their thermodynamic probabilities are predicted based on the calculated Gibbs energies and
analysis of E-pH diagrams. Thermodynamic analysis, experimental data, chemical,
XRD, TG/DTA, and SEM/EDX analyses for the phases present in both the complex
concentrate and leach residue were performed to determine the leaching process.
Elemental sulphur is the main solid product of reaction, and a minor amount of
sulphide sulphur is oxidized to sulphate during the leaching. It also indicates that
the sulphur precipitated at the particle surfaces, and slowed down the rate of the
leaching process.
PB  - Belgrade : Association of Metallurgical Engineers of Serbia
C3  - 3th Metallurgical & Materials Engineering Congress of South-East Europe MME SEE 2017
T1  - Sphalerite passivation during the leaching sodium nitrate and sulphuric acid solution
EP  - 47
SP  - 47
ER  - 

@conference{
author = "Sokić, Miroslav and Marković, Branislav and Kamberović, Željko and Štrbac, Nada and Matković, Vladislav and Manojlović, Vaso and Bugarčić, Mladen",
year = "2017",
abstract = "Zinc is extracted from sphalerite and complex concentrates by pyrometallurgical or hydrometallurgical processes, whereby the hydrometallurgical processes
have received considerable attention in recent years. Thair application provide
better metal recoveries and reduced emission of gaseous and toxic agenses in the
environment. This paper studies the leaching process of the sphalerite with sodium
nitrate in sulphuric acid solution. Chemical reactions of leaching and their thermodynamic probabilities are predicted based on the calculated Gibbs energies and
analysis of E-pH diagrams. Thermodynamic analysis, experimental data, chemical,
XRD, TG/DTA, and SEM/EDX analyses for the phases present in both the complex
concentrate and leach residue were performed to determine the leaching process.
Elemental sulphur is the main solid product of reaction, and a minor amount of
sulphide sulphur is oxidized to sulphate during the leaching. It also indicates that
the sulphur precipitated at the particle surfaces, and slowed down the rate of the
leaching process.",
publisher = "Belgrade : Association of Metallurgical Engineers of Serbia",
journal = "3th Metallurgical & Materials Engineering Congress of South-East Europe MME SEE 2017",
title = "Sphalerite passivation during the leaching sodium nitrate and sulphuric acid solution",
pages = "47-47"
}

Sokić, M., Marković, B., Kamberović, Ž., Štrbac, N., Matković, V., Manojlović, V.,& Bugarčić, M.. (2017). Sphalerite passivation during the leaching sodium nitrate and sulphuric acid solution. in 3th Metallurgical & Materials Engineering Congress of South-East Europe MME SEE 2017
Belgrade : Association of Metallurgical Engineers of Serbia., 47-47.

Sokić M, Marković B, Kamberović Ž, Štrbac N, Matković V, Manojlović V, Bugarčić M. Sphalerite passivation during the leaching sodium nitrate and sulphuric acid solution. in 3th Metallurgical & Materials Engineering Congress of South-East Europe MME SEE 2017. 2017;:47-47..

Sokić, Miroslav, Marković, Branislav, Kamberović, Željko, Štrbac, Nada, Matković, Vladislav, Manojlović, Vaso, Bugarčić, Mladen, "Sphalerite passivation during the leaching sodium nitrate and sulphuric acid solution" in 3th Metallurgical & Materials Engineering Congress of South-East Europe MME SEE 2017 (2017):47-47.

TY  - CONF
AU  - Marković, Branislav
AU  - Manasijević, Dragan
AU  - Sokić, Miroslav
AU  - Talijan, Nadežda
AU  - Štrbac, Nada
AU  - Manojlović, Vaso
AU  - Janjušević, Zoran
AU  - Bugarčić, Mladen
PY  - 2017
UR  - https://ritnms.itnms.ac.rs/handle/123456789/951
AB  - High toxicity of lead and damaging effects on the environment resulted in its prohibited
use in electronic materials (RoHS Directive from 1 July 2006 in the EU). Therefore, great
effort has been made on the development of new Pb-free soldering and brazing materials
[1-5]. The Bi–Cu–Ni ternary system belongs to the group of potential Cu-Ni-based
advanced lead-free solder materials for high temperature application [6-8]. The results of
phase equilibria investigation of the alloys selected in the Bi-Cu0.75Ni0.25 section from
bismuth corner with molar ratio Cu:Ni = 3:1, are presented in this paper. The investigations
were performed using DTA/DSC experimental methods, while thermodynamic calculation
was done according to the CALPHAD method using PANDAT software. The results of the
DTA/DSC heating measurements of the chosen samples in the Bi-Cu0.75Ni0.25 section,
including liquidus temperatures and other phase transition temperatures are presented in
graphical abstract. The phase diagram of the investigated Bi-CuNi section has been
calculated using PANDAT software and is presented in graphical abstract, together with
experimentally determined DTA/DSC points. It could be noticed that calculated phase
diagram is in good agreement with DTA/DSC experiments.
PB  - Kosovska Mitrovica : Fakultet Tehničkih nauka
C3  - Osmi simpozijum o termodinamici i faznim dijagramima
T1  - Thermal analysis application on the phase equilibria investigation of the alloys in the Bi- Cu0.75Ni0.25 section of the Bi-Cu-Ni system
EP  - 83
SP  - 81
ER  - 

@conference{
author = "Marković, Branislav and Manasijević, Dragan and Sokić, Miroslav and Talijan, Nadežda and Štrbac, Nada and Manojlović, Vaso and Janjušević, Zoran and Bugarčić, Mladen",
year = "2017",
abstract = "High toxicity of lead and damaging effects on the environment resulted in its prohibited
use in electronic materials (RoHS Directive from 1 July 2006 in the EU). Therefore, great
effort has been made on the development of new Pb-free soldering and brazing materials
[1-5]. The Bi–Cu–Ni ternary system belongs to the group of potential Cu-Ni-based
advanced lead-free solder materials for high temperature application [6-8]. The results of
phase equilibria investigation of the alloys selected in the Bi-Cu0.75Ni0.25 section from
bismuth corner with molar ratio Cu:Ni = 3:1, are presented in this paper. The investigations
were performed using DTA/DSC experimental methods, while thermodynamic calculation
was done according to the CALPHAD method using PANDAT software. The results of the
DTA/DSC heating measurements of the chosen samples in the Bi-Cu0.75Ni0.25 section,
including liquidus temperatures and other phase transition temperatures are presented in
graphical abstract. The phase diagram of the investigated Bi-CuNi section has been
calculated using PANDAT software and is presented in graphical abstract, together with
experimentally determined DTA/DSC points. It could be noticed that calculated phase
diagram is in good agreement with DTA/DSC experiments.",
publisher = "Kosovska Mitrovica : Fakultet Tehničkih nauka",
journal = "Osmi simpozijum o termodinamici i faznim dijagramima",
title = "Thermal analysis application on the phase equilibria investigation of the alloys in the Bi- Cu0.75Ni0.25 section of the Bi-Cu-Ni system",
pages = "83-81"
}

Marković, B., Manasijević, D., Sokić, M., Talijan, N., Štrbac, N., Manojlović, V., Janjušević, Z.,& Bugarčić, M.. (2017). Thermal analysis application on the phase equilibria investigation of the alloys in the Bi- Cu0.75Ni0.25 section of the Bi-Cu-Ni system. in Osmi simpozijum o termodinamici i faznim dijagramima
Kosovska Mitrovica : Fakultet Tehničkih nauka., 81-83.

Marković B, Manasijević D, Sokić M, Talijan N, Štrbac N, Manojlović V, Janjušević Z, Bugarčić M. Thermal analysis application on the phase equilibria investigation of the alloys in the Bi- Cu0.75Ni0.25 section of the Bi-Cu-Ni system. in Osmi simpozijum o termodinamici i faznim dijagramima. 2017;:81-83..

Marković, Branislav, Manasijević, Dragan, Sokić, Miroslav, Talijan, Nadežda, Štrbac, Nada, Manojlović, Vaso, Janjušević, Zoran, Bugarčić, Mladen, "Thermal analysis application on the phase equilibria investigation of the alloys in the Bi- Cu0.75Ni0.25 section of the Bi-Cu-Ni system" in Osmi simpozijum o termodinamici i faznim dijagramima (2017):81-83.

TY  - CONF
AU  - Sokić, Miroslav
AU  - Marković, Branislav
AU  - Štrbac, Nada
AU  - Kamberović, Željko
AU  - Manojlović, Vaso
AU  - Matković, Vladislav
AU  - Bugarčić, Mladen
PY  - 2017
UR  - https://ritnms.itnms.ac.rs/handle/123456789/982
AB  - The determination of mechanism of the polymetallic concentrate leaching with sulfuric
acid and hydrogen peroxide was done based on the characterization of the starting
concentrate and leach residues. The application of XRD and thermal analysis on the
leaching mechanism determination was done. The phase content of concentrate and leach
residues were determined by X-ray analysis using diffractometer PHILIPS PW-1710. DTA
and TG analysis were performed in air atmosphere up to 1173 K on NETZSH, model 409
EP, device.
The polymetallic concentrate, used in experiments, has the following chemical
composition (in wt. %): Cu-8.92, Zn-8.79; Pb-12.66, Fe-19.80 and S-21.4. X-ray phase
analysis of the concentrate reveals that the sample contains chalcopyrite, sphalerite, galena
pyrhotite and quartz (Fig. a). On Fig. b the DTA and TG curves of polymetallic concentrate
are shown. Curves include two parts: first, a low temperature, which correspond to the
sulfides oxidation (the mass increase on the TG, and exothermic peaks on the DTA); and
second which correspond to the dissociation of sulphates and oxysulphates (the mass loss
on the TG, and endothermic peaks on the DTA).
The phases identified in the leach residue by XRD were elemental sulphur, anglesite,
chalcopyrite, sphalerite, galena pyrhotite and quartz (Fig. c), which confirms that the
elemental sulphur is formed during leaching. In Fig. d the TG-DTA curve of the leach
residue are shown. On DTA curve on the temperature of 118 oC, the endothermic peak as a
result of elemental sulfur melting is clearly visible. Then, in the range of 250-350 oC,
weight loss as a consequence of the oxidation of sulfur to SO2 gas occurs. The loss of mass
due to combustion of sulfur on Fig. d is smaller than the sulfide sulfur which is oxidized
during the leaching process, which indicates that the sulfur from sulfides is oxidised both
to the sulfate and to the elemental form. The mass increase followed by exothermic effects
in the range of 400-700 oC is a result of the oxidation of unleached sulphides in the solid
residues. At temperatures above 720 °C weight loss occurs as a result of dissociation of
sulphate and oxysulphates of lead, zinc, copper and iron with endothermic peaks on the
DTA curve. XRD and DTA/TG studies have contributed in determining the mechanism of
polymetallic concentrate leaching process in the system H2SO4-H2O2-H2O:CuFeS2 + 5/2H2O2 + 5/2H2SO4 = CuSO4 + 1/2Fe2(SO4)3 + 2S0 + 5H2O
(1)
CuFeS2 + 17/2H2O2 + 1/2H2SO4 = CuSO4 + 1/2Fe2(SO4)3 + 9H2O(2)
ZnS + H2O2 + H2SO4 = ZnSO4 + S0 + 2H2O (3)
ZnS + 4H2O2 = ZnSO4 + 4H2O (4)
PbS + H2O2 + H2SO4 = PbSO4 + S0 + 2H2O (5)
PbS + 4H2O2 = PbSO4 + 4H2O (6)
PB  - Kosovska Mitrovica : Fakultet Tehničkih nauka
C3  - Osmi simpozijum o termodinamici i faznim dijagramima
T1  - Mechanism of polymetallic concentrate leaching with sulfuric acid and hydrogen peroxide solution
EP  - 88
SP  - 86
ER  - 

@conference{
author = "Sokić, Miroslav and Marković, Branislav and Štrbac, Nada and Kamberović, Željko and Manojlović, Vaso and Matković, Vladislav and Bugarčić, Mladen",
year = "2017",
abstract = "The determination of mechanism of the polymetallic concentrate leaching with sulfuric
acid and hydrogen peroxide was done based on the characterization of the starting
concentrate and leach residues. The application of XRD and thermal analysis on the
leaching mechanism determination was done. The phase content of concentrate and leach
residues were determined by X-ray analysis using diffractometer PHILIPS PW-1710. DTA
and TG analysis were performed in air atmosphere up to 1173 K on NETZSH, model 409
EP, device.
The polymetallic concentrate, used in experiments, has the following chemical
composition (in wt. %): Cu-8.92, Zn-8.79; Pb-12.66, Fe-19.80 and S-21.4. X-ray phase
analysis of the concentrate reveals that the sample contains chalcopyrite, sphalerite, galena
pyrhotite and quartz (Fig. a). On Fig. b the DTA and TG curves of polymetallic concentrate
are shown. Curves include two parts: first, a low temperature, which correspond to the
sulfides oxidation (the mass increase on the TG, and exothermic peaks on the DTA); and
second which correspond to the dissociation of sulphates and oxysulphates (the mass loss
on the TG, and endothermic peaks on the DTA).
The phases identified in the leach residue by XRD were elemental sulphur, anglesite,
chalcopyrite, sphalerite, galena pyrhotite and quartz (Fig. c), which confirms that the
elemental sulphur is formed during leaching. In Fig. d the TG-DTA curve of the leach
residue are shown. On DTA curve on the temperature of 118 oC, the endothermic peak as a
result of elemental sulfur melting is clearly visible. Then, in the range of 250-350 oC,
weight loss as a consequence of the oxidation of sulfur to SO2 gas occurs. The loss of mass
due to combustion of sulfur on Fig. d is smaller than the sulfide sulfur which is oxidized
during the leaching process, which indicates that the sulfur from sulfides is oxidised both
to the sulfate and to the elemental form. The mass increase followed by exothermic effects
in the range of 400-700 oC is a result of the oxidation of unleached sulphides in the solid
residues. At temperatures above 720 °C weight loss occurs as a result of dissociation of
sulphate and oxysulphates of lead, zinc, copper and iron with endothermic peaks on the
DTA curve. XRD and DTA/TG studies have contributed in determining the mechanism of
polymetallic concentrate leaching process in the system H2SO4-H2O2-H2O:CuFeS2 + 5/2H2O2 + 5/2H2SO4 = CuSO4 + 1/2Fe2(SO4)3 + 2S0 + 5H2O
(1)
CuFeS2 + 17/2H2O2 + 1/2H2SO4 = CuSO4 + 1/2Fe2(SO4)3 + 9H2O(2)
ZnS + H2O2 + H2SO4 = ZnSO4 + S0 + 2H2O (3)
ZnS + 4H2O2 = ZnSO4 + 4H2O (4)
PbS + H2O2 + H2SO4 = PbSO4 + S0 + 2H2O (5)
PbS + 4H2O2 = PbSO4 + 4H2O (6)",
publisher = "Kosovska Mitrovica : Fakultet Tehničkih nauka",
journal = "Osmi simpozijum o termodinamici i faznim dijagramima",
title = "Mechanism of polymetallic concentrate leaching with sulfuric acid and hydrogen peroxide solution",
pages = "88-86"
}

Sokić, M., Marković, B., Štrbac, N., Kamberović, Ž., Manojlović, V., Matković, V.,& Bugarčić, M.. (2017). Mechanism of polymetallic concentrate leaching with sulfuric acid and hydrogen peroxide solution. in Osmi simpozijum o termodinamici i faznim dijagramima
Kosovska Mitrovica : Fakultet Tehničkih nauka., 86-88.

Sokić M, Marković B, Štrbac N, Kamberović Ž, Manojlović V, Matković V, Bugarčić M. Mechanism of polymetallic concentrate leaching with sulfuric acid and hydrogen peroxide solution. in Osmi simpozijum o termodinamici i faznim dijagramima. 2017;:86-88..

Sokić, Miroslav, Marković, Branislav, Štrbac, Nada, Kamberović, Željko, Manojlović, Vaso, Matković, Vladislav, Bugarčić, Mladen, "Mechanism of polymetallic concentrate leaching with sulfuric acid and hydrogen peroxide solution" in Osmi simpozijum o termodinamici i faznim dijagramima (2017):86-88.

TY  - CONF
AU  - Manojlović, Vaso
AU  - Sokić, Miroslav
AU  - Kamberović, Željko
AU  - Gavrilovski, Milorad
AU  - Marković, Branislav
AU  - Bugarčić, Mladen
PY  - 2017
UR  - https://ritnms.itnms.ac.rs/handle/123456789/952
AB  - The analysis of material and energy balance can be done using concept of exergy, which is
a measure of available energy in the system [1]. Exergy losses indicate the place of
degradation in the process; thus, it implies improving of selected process.
The aluminothermic reduction process is an attractive method for immobilization of
hazardous waste, and for utilization of valuable elements from the waste [2]. The exergy
calculation relies on the material and energy balance calculation and standard chemical
exergy of the elements. For the purpose of material, energy, and exergy balance calculation
discrete non-commercial software was developed [3]. The waste materials used in these
calculations are Electric-arc furnace dust (EAFD, mostly Fe and Zn oxides) and the Mill
scale (mostly Fe oxides) [4].
Calculated exergy efficiency for aluminothermic processing of waste was 94.6%. All the
heat released by exothermic reactions was used for producing the iron, the slag and the
crude ZnO dust. Comparing to the conventional carbothermic reduction process in the DC
electric-arc furnace with the same materials (for which exergy efficiency was 56.5%) this
is much higher. The irreversible exergy losses of the aluminothermic process are 398.2
kWh/t of produced iron. The further processing of slag and dust is required, as well as in
the case of the carbothermic reduction process, so that the real value of exergy efficiency
of the process will be somewhat lower than the calculated.
PB  - Kosovska Mitrovica : Fakultet Tehničkih nauka
C3  - Osmi simpozijum o termodinamici i faznim dijagramima
T1  - Exergy analysis for aluminothermic processing of waste materials
EP  - 94
SP  - 93
ER  - 

@conference{
author = "Manojlović, Vaso and Sokić, Miroslav and Kamberović, Željko and Gavrilovski, Milorad and Marković, Branislav and Bugarčić, Mladen",
year = "2017",
abstract = "The analysis of material and energy balance can be done using concept of exergy, which is
a measure of available energy in the system [1]. Exergy losses indicate the place of
degradation in the process; thus, it implies improving of selected process.
The aluminothermic reduction process is an attractive method for immobilization of
hazardous waste, and for utilization of valuable elements from the waste [2]. The exergy
calculation relies on the material and energy balance calculation and standard chemical
exergy of the elements. For the purpose of material, energy, and exergy balance calculation
discrete non-commercial software was developed [3]. The waste materials used in these
calculations are Electric-arc furnace dust (EAFD, mostly Fe and Zn oxides) and the Mill
scale (mostly Fe oxides) [4].
Calculated exergy efficiency for aluminothermic processing of waste was 94.6%. All the
heat released by exothermic reactions was used for producing the iron, the slag and the
crude ZnO dust. Comparing to the conventional carbothermic reduction process in the DC
electric-arc furnace with the same materials (for which exergy efficiency was 56.5%) this
is much higher. The irreversible exergy losses of the aluminothermic process are 398.2
kWh/t of produced iron. The further processing of slag and dust is required, as well as in
the case of the carbothermic reduction process, so that the real value of exergy efficiency
of the process will be somewhat lower than the calculated.",
publisher = "Kosovska Mitrovica : Fakultet Tehničkih nauka",
journal = "Osmi simpozijum o termodinamici i faznim dijagramima",
title = "Exergy analysis for aluminothermic processing of waste materials",
pages = "94-93"
}

Manojlović, V., Sokić, M., Kamberović, Ž., Gavrilovski, M., Marković, B.,& Bugarčić, M.. (2017). Exergy analysis for aluminothermic processing of waste materials. in Osmi simpozijum o termodinamici i faznim dijagramima
Kosovska Mitrovica : Fakultet Tehničkih nauka., 93-94.

Manojlović V, Sokić M, Kamberović Ž, Gavrilovski M, Marković B, Bugarčić M. Exergy analysis for aluminothermic processing of waste materials. in Osmi simpozijum o termodinamici i faznim dijagramima. 2017;:93-94..

Manojlović, Vaso, Sokić, Miroslav, Kamberović, Željko, Gavrilovski, Milorad, Marković, Branislav, Bugarčić, Mladen, "Exergy analysis for aluminothermic processing of waste materials" in Osmi simpozijum o termodinamici i faznim dijagramima (2017):93-94.

TY  - JOUR
AU  - Mitovski, Aleksandra
AU  - Štrbac, Nada
AU  - Sokić, Miroslav
AU  - Kragović, Milan
AU  - Grekulović, Vesna
PY  - 2017
UR  - https://ritnms.itnms.ac.rs/handle/123456789/436
AB  - Sulfide copper concentrate from domestic ore deposit (Bor, Serbia) was subjected to oxidation in the air atmosphere due to a better understanding of reaction mechanism and oxidation of various sulfides present in the copper concentrate at elevated temperatures. Results of the initial sample characterization showed that concentrate is chalcopyrite-enargite-tennantite type, with an increased arsenic content. Characterization of the oxidation products showed the presence of sulfates, oxysulfates, and oxides. Based on predominance area diagrams for Me-S-O systems (Me = Cu, Fe, As) combined with thermal analysis results, the reaction mechanism of the oxidation process was proposed. The reactions which occur in the temperature range 25 -1000 degrees C indicate that sulfides are unstable in the oxidative conditions. Sulfides from the initial sample decomposed into binary copper and iron sulfides and volatile arsenic oxides at lower temperatures. Further heating led to oxidation of sulfides into iron oxides and copper sulfates and oxysulfates. At higher temperatures sulfates and oxysulfates decomposed into oxides. Kinetic analysis of the oxidation process was done using Ozawa's method in the non-isothermal conditions. The values for activation energies showed that the reactions are chemically controlled and the temperature is the most influential parameter on the reaction rates.
PB  - Savez inženjera metalurgije Srbije, Beograd
T2  - Metallurgical & Materials Engineering
T1  - Reaction mechanism and kinetics of sulfide copper concentrate oxidation at elevated temperatures
EP  - 280
IS  - 3
SP  - 267
VL  - 23
DO  - 10.30544/320
UR  - conv_812
ER  - 

@article{
author = "Mitovski, Aleksandra and Štrbac, Nada and Sokić, Miroslav and Kragović, Milan and Grekulović, Vesna",
year = "2017",
abstract = "Sulfide copper concentrate from domestic ore deposit (Bor, Serbia) was subjected to oxidation in the air atmosphere due to a better understanding of reaction mechanism and oxidation of various sulfides present in the copper concentrate at elevated temperatures. Results of the initial sample characterization showed that concentrate is chalcopyrite-enargite-tennantite type, with an increased arsenic content. Characterization of the oxidation products showed the presence of sulfates, oxysulfates, and oxides. Based on predominance area diagrams for Me-S-O systems (Me = Cu, Fe, As) combined with thermal analysis results, the reaction mechanism of the oxidation process was proposed. The reactions which occur in the temperature range 25 -1000 degrees C indicate that sulfides are unstable in the oxidative conditions. Sulfides from the initial sample decomposed into binary copper and iron sulfides and volatile arsenic oxides at lower temperatures. Further heating led to oxidation of sulfides into iron oxides and copper sulfates and oxysulfates. At higher temperatures sulfates and oxysulfates decomposed into oxides. Kinetic analysis of the oxidation process was done using Ozawa's method in the non-isothermal conditions. The values for activation energies showed that the reactions are chemically controlled and the temperature is the most influential parameter on the reaction rates.",
publisher = "Savez inženjera metalurgije Srbije, Beograd",
journal = "Metallurgical & Materials Engineering",
title = "Reaction mechanism and kinetics of sulfide copper concentrate oxidation at elevated temperatures",
pages = "280-267",
number = "3",
volume = "23",
doi = "10.30544/320",
url = "conv_812"
}

Mitovski, A., Štrbac, N., Sokić, M., Kragović, M.,& Grekulović, V.. (2017). Reaction mechanism and kinetics of sulfide copper concentrate oxidation at elevated temperatures. in Metallurgical & Materials Engineering
Savez inženjera metalurgije Srbije, Beograd., 23(3), 267-280.
https://doi.org/10.30544/320
conv_812

Mitovski A, Štrbac N, Sokić M, Kragović M, Grekulović V. Reaction mechanism and kinetics of sulfide copper concentrate oxidation at elevated temperatures. in Metallurgical & Materials Engineering. 2017;23(3):267-280.
doi:10.30544/320
conv_812 .

Mitovski, Aleksandra, Štrbac, Nada, Sokić, Miroslav, Kragović, Milan, Grekulović, Vesna, "Reaction mechanism and kinetics of sulfide copper concentrate oxidation at elevated temperatures" in Metallurgical & Materials Engineering, 23, no. 3 (2017):267-280,
https://doi.org/10.30544/320 .,
conv_812 .