TY  - JOUR
AU  - Božinović, Kristina
AU  - Štrbac, Nada
AU  - Mitovski, Aleksandra
AU  - Sokić, Miroslav
AU  - Minić, Duško
AU  - Marković, Branislav
AU  - Stojanović, Jovica
PY  - 2021
UR  - https://ritnms.itnms.ac.rs/handle/123456789/569
AB  - The roasting of sulfide ores and concentrates is one of the most important steps in pyrometallurgical metal production from primary raw materials, due to the necessity of excess sulfur removal, present in the virgin material. Pentlandite is one of the main sources for nickel pyrometallurgical production. The knowledge of its reaction mechanism, products distribution during oxidation and reaction kinetics is important for optimizing the production process. Raw pentlandite-bearing ore from the Levack mine (Ontario, Canada) was subjected to oxidative roasting in the air atmosphere. A chemical analysis of the initial sample was conducted according to EDXRF (Energy-Dispersive X-ray Fluorescence) and AAS (Atomic Adsorption Spectrometry) results. The characterization of the initial sample and oxidation products was conducted by an XRD (X-ray Diffraction) and SEM/EDS (Scanning Electron Microscopy with Energy Dispersive Spectrometry) analysis. Thermodynamic calculations, a phase analysis and construction of Kellogg diagrams for Ni-S-O and Fe-S-O systems at 298 K, 773 K, 923 K and 1073 K were used for proposing the theoretical reaction mechanism. A thermal analysis (TG/DTA-Thermogravimetric and Differential Thermal Analyses) was conducted in temperature range 298-1273 K, under a heating rate of 15 degrees min(-1). A kinetic analysis was conducted according to the non-isothermal method of Daniels and Borchardt, under a heating rate of 15 degrees min(-1). Calculated activation energies of 113 kJ mol(-1), 146 kJ mol(-1) and 356 kJ mol(-1) for three oxidation stages imply that in every examined stage of the oxidation process, temperature is a dominant factor determining the reaction rate.
PB  - MDPI, Basel
T2  - Metals
T1  - Thermal Decomposition and Kinetics of Pentlandite-Bearing Ore Oxidation in the Air Atmosphere
IS  - 9
VL  - 11
DO  - 10.3390/met11091364
UR  - conv_918
ER  - 

@article{
author = "Božinović, Kristina and Štrbac, Nada and Mitovski, Aleksandra and Sokić, Miroslav and Minić, Duško and Marković, Branislav and Stojanović, Jovica",
year = "2021",
abstract = "The roasting of sulfide ores and concentrates is one of the most important steps in pyrometallurgical metal production from primary raw materials, due to the necessity of excess sulfur removal, present in the virgin material. Pentlandite is one of the main sources for nickel pyrometallurgical production. The knowledge of its reaction mechanism, products distribution during oxidation and reaction kinetics is important for optimizing the production process. Raw pentlandite-bearing ore from the Levack mine (Ontario, Canada) was subjected to oxidative roasting in the air atmosphere. A chemical analysis of the initial sample was conducted according to EDXRF (Energy-Dispersive X-ray Fluorescence) and AAS (Atomic Adsorption Spectrometry) results. The characterization of the initial sample and oxidation products was conducted by an XRD (X-ray Diffraction) and SEM/EDS (Scanning Electron Microscopy with Energy Dispersive Spectrometry) analysis. Thermodynamic calculations, a phase analysis and construction of Kellogg diagrams for Ni-S-O and Fe-S-O systems at 298 K, 773 K, 923 K and 1073 K were used for proposing the theoretical reaction mechanism. A thermal analysis (TG/DTA-Thermogravimetric and Differential Thermal Analyses) was conducted in temperature range 298-1273 K, under a heating rate of 15 degrees min(-1). A kinetic analysis was conducted according to the non-isothermal method of Daniels and Borchardt, under a heating rate of 15 degrees min(-1). Calculated activation energies of 113 kJ mol(-1), 146 kJ mol(-1) and 356 kJ mol(-1) for three oxidation stages imply that in every examined stage of the oxidation process, temperature is a dominant factor determining the reaction rate.",
publisher = "MDPI, Basel",
journal = "Metals",
title = "Thermal Decomposition and Kinetics of Pentlandite-Bearing Ore Oxidation in the Air Atmosphere",
number = "9",
volume = "11",
doi = "10.3390/met11091364",
url = "conv_918"
}

Božinović, K., Štrbac, N., Mitovski, A., Sokić, M., Minić, D., Marković, B.,& Stojanović, J.. (2021). Thermal Decomposition and Kinetics of Pentlandite-Bearing Ore Oxidation in the Air Atmosphere. in Metals
MDPI, Basel., 11(9).
https://doi.org/10.3390/met11091364
conv_918

Božinović K, Štrbac N, Mitovski A, Sokić M, Minić D, Marković B, Stojanović J. Thermal Decomposition and Kinetics of Pentlandite-Bearing Ore Oxidation in the Air Atmosphere. in Metals. 2021;11(9).
doi:10.3390/met11091364
conv_918 .

Božinović, Kristina, Štrbac, Nada, Mitovski, Aleksandra, Sokić, Miroslav, Minić, Duško, Marković, Branislav, Stojanović, Jovica, "Thermal Decomposition and Kinetics of Pentlandite-Bearing Ore Oxidation in the Air Atmosphere" in Metals, 11, no. 9 (2021),
https://doi.org/10.3390/met11091364 .,
conv_918 .

TY  - JOUR
AU  - Štrbac, Nada
AU  - Sokić, Miroslav
AU  - Mitovski, Aleksandra
AU  - Gurešić, Dejan M.
AU  - Božinović, Kristina
AU  - Stojanović, Jovica
AU  - Tomović, Milica P.
PY  - 2020
UR  - https://ritnms.itnms.ac.rs/handle/123456789/549
AB  - Bizmut (III) sulfid je poslednjih godina naširoko istraživan zbog svoje primene, ali je malo akcenta dato na istraživanja u pogledu njegovog ponašanja na povišenim temperaturama. Ovo je od velike važnosti, uzevši u obzir da se bizmut, u obliku Bi2S3 nalazi u sulfidnim koncentratima bakra i važi za jednu od najštetnijih komponenti, zajedno sa olovom, arsenom i antimonom. Uklanjanje ovih supstanci jedan je od osnovnih zadataka u procesima pirometalurške ekstrakcija bakra, kako bi se na kraju proizvodnog procesa dobio metal visoke čistoće. U cilju boljeg razumevanja ponašanja bizmut (III) sulfida pri oksidaciji na povišenim temperaturama, u ovom radu je izvršena karakterizacija sintetisanog uzoraka Bi2S3 na sobnoj temperaturi i produkata oksidacije na 500°C metodom rentgenske difrakcije (XRD), kao i termodinamička, termijska i kinetička analiza procesa oksidacije Bi2S3 na povišenim temperaturama. Da bi se razumelo ponašanje Bi2S3 tokom oksidacije i raspodela produkata oksidacije, konstruisani su dijagrami stabilnosti faza u sistemu Bi-S-O na različitim temperaturama i proračunate su vrednosti promene Gibbsove slobodne energije na 400°C i 1000°C. Kinetička analiza procesa oksidacije Bi2S3, urađena po metodi Kissingera u neizotermskim uslovima, pokazala je da je oksidacija bizmutinita hemijski kontrolisani proces.
AB  - Bismuth (III) sulfide has been widely researched in recent years due to its application, but little emphasis has been placed on research regarding its behavior at elevated temperatures. This is of great importance, considering that bismuth, in the form of Bi2S3, is found in copper sulfide concentrates and is considered one of the most harmful components, along with lead, arsenic and antimony. The removal of these substances is one of the basic tasks in the processes of pyrometallurgical extraction of copper, in order to obtain a high purity metal. In order to better understand the behavior of bismuth (III) sulfide during oxidation at elevated temperatures, this paper characterized the synthesized sample of Bi2S3 at room temperature and the oxidation products at 500 °C by X-Ray diffraction (XRD), as well as thermodynamic, thermal and kinetic analysis of the oxidation process of Bi2S3 at elevated temperatures. In order to understand the behavior of Bi2S3 during oxidation and the distribution of oxidation products, phase stability diagrams in the Bi-S-O system were constructed at different temperatures and the values of the Gibbs free energy change at 400 °C and 1000 °C were calculated. Kinetic analysis of Bi2S3 oxidation process was performed by Kissingers method in non-isothermal conditions.
PB  - Savez inženjera i tehničara Srbije, Beograd
T2  - Tehnika
T1  - Ispitivanje procesa oksidacije Bi2S3 na povišenim temperaturama u atmosferi vazduha
T1  - Investigation of Bi2S3 oxidation process at elevated temperatures in the air atmosphere
EP  - 593
IS  - 5
SP  - 587
VL  - 75
DO  - 10.5937/tehnika2005587S
UR  - conv_30
ER  - 

@article{
author = "Štrbac, Nada and Sokić, Miroslav and Mitovski, Aleksandra and Gurešić, Dejan M. and Božinović, Kristina and Stojanović, Jovica and Tomović, Milica P.",
year = "2020",
abstract = "Bizmut (III) sulfid je poslednjih godina naširoko istraživan zbog svoje primene, ali je malo akcenta dato na istraživanja u pogledu njegovog ponašanja na povišenim temperaturama. Ovo je od velike važnosti, uzevši u obzir da se bizmut, u obliku Bi2S3 nalazi u sulfidnim koncentratima bakra i važi za jednu od najštetnijih komponenti, zajedno sa olovom, arsenom i antimonom. Uklanjanje ovih supstanci jedan je od osnovnih zadataka u procesima pirometalurške ekstrakcija bakra, kako bi se na kraju proizvodnog procesa dobio metal visoke čistoće. U cilju boljeg razumevanja ponašanja bizmut (III) sulfida pri oksidaciji na povišenim temperaturama, u ovom radu je izvršena karakterizacija sintetisanog uzoraka Bi2S3 na sobnoj temperaturi i produkata oksidacije na 500°C metodom rentgenske difrakcije (XRD), kao i termodinamička, termijska i kinetička analiza procesa oksidacije Bi2S3 na povišenim temperaturama. Da bi se razumelo ponašanje Bi2S3 tokom oksidacije i raspodela produkata oksidacije, konstruisani su dijagrami stabilnosti faza u sistemu Bi-S-O na različitim temperaturama i proračunate su vrednosti promene Gibbsove slobodne energije na 400°C i 1000°C. Kinetička analiza procesa oksidacije Bi2S3, urađena po metodi Kissingera u neizotermskim uslovima, pokazala je da je oksidacija bizmutinita hemijski kontrolisani proces., Bismuth (III) sulfide has been widely researched in recent years due to its application, but little emphasis has been placed on research regarding its behavior at elevated temperatures. This is of great importance, considering that bismuth, in the form of Bi2S3, is found in copper sulfide concentrates and is considered one of the most harmful components, along with lead, arsenic and antimony. The removal of these substances is one of the basic tasks in the processes of pyrometallurgical extraction of copper, in order to obtain a high purity metal. In order to better understand the behavior of bismuth (III) sulfide during oxidation at elevated temperatures, this paper characterized the synthesized sample of Bi2S3 at room temperature and the oxidation products at 500 °C by X-Ray diffraction (XRD), as well as thermodynamic, thermal and kinetic analysis of the oxidation process of Bi2S3 at elevated temperatures. In order to understand the behavior of Bi2S3 during oxidation and the distribution of oxidation products, phase stability diagrams in the Bi-S-O system were constructed at different temperatures and the values of the Gibbs free energy change at 400 °C and 1000 °C were calculated. Kinetic analysis of Bi2S3 oxidation process was performed by Kissingers method in non-isothermal conditions.",
publisher = "Savez inženjera i tehničara Srbije, Beograd",
journal = "Tehnika",
title = "Ispitivanje procesa oksidacije Bi2S3 na povišenim temperaturama u atmosferi vazduha, Investigation of Bi2S3 oxidation process at elevated temperatures in the air atmosphere",
pages = "593-587",
number = "5",
volume = "75",
doi = "10.5937/tehnika2005587S",
url = "conv_30"
}

Štrbac, N., Sokić, M., Mitovski, A., Gurešić, D. M., Božinović, K., Stojanović, J.,& Tomović, M. P.. (2020). Ispitivanje procesa oksidacije Bi2S3 na povišenim temperaturama u atmosferi vazduha. in Tehnika
Savez inženjera i tehničara Srbije, Beograd., 75(5), 587-593.
https://doi.org/10.5937/tehnika2005587S
conv_30

Štrbac N, Sokić M, Mitovski A, Gurešić DM, Božinović K, Stojanović J, Tomović MP. Ispitivanje procesa oksidacije Bi2S3 na povišenim temperaturama u atmosferi vazduha. in Tehnika. 2020;75(5):587-593.
doi:10.5937/tehnika2005587S
conv_30 .

Štrbac, Nada, Sokić, Miroslav, Mitovski, Aleksandra, Gurešić, Dejan M., Božinović, Kristina, Stojanović, Jovica, Tomović, Milica P., "Ispitivanje procesa oksidacije Bi2S3 na povišenim temperaturama u atmosferi vazduha" in Tehnika, 75, no. 5 (2020):587-593,
https://doi.org/10.5937/tehnika2005587S .,
conv_30 .

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 .

TY  - JOUR
AU  - Živković, Dragana
AU  - Balanović, Ljubiša
AU  - Mitovski, Aleksandra
AU  - Talijan, Nadežda
AU  - Štrbac, Nada
AU  - Sokić, Miroslav
AU  - Manasijević, Dragan
AU  - Minić, Duško
AU  - Ćosović, Vladan
PY  - 2016
UR  - https://ritnms.itnms.ac.rs/handle/123456789/386
AB  - Uredništvo časopisa 'Reciklaža i održivi razvoj' je u dogovoru sa autorskim timom preglednog rada pod nazivom ' EKološki rizici i reciklaža nanomaterijala - aktuelna pitanja ' (D. Živković, Lj. Balanović, A. Mitovski, N. Talijan, N. Štrbac, M. Sokić, D. Manasijević, D. Minić, V. Ćosović), koji je publikovan u ovom časopisu vol.7 iz 2014. godine (str.1-8), donelo odluku da se zbog uočenog ozbiljnog previda (na osnovu provere CEON-a), koji se ogleda u neadekvatnom citiranju jedne reference, odnosno izostavljanju reference iz koje su korišćeni pojedini tekstualni navodi, kao i dupliranja pojedinih referenci, izvrši neophodna ispravka onih delova rada u kome pomenuti referentni izvor nije adekvatno naveden, kao i ispravke u listi referenci, a u skladu sa propisanom procedurom.
AB  - Editorial board of the 'Recycling and Sustainable Development' Journal in agreement with the authors of the article titled 'Nanomaterials environmental risks and recycling - actual issues' (D. Zivkovic, Lj. Balanović, A. Mitovski, N. Talijan, N. Strbac , M. Sokić, D. Manasijević, D. Minić, V. Ćosović), which was published in this journal vol. 7 in 2014 (p. 1-8), made the decision to do correction of article because of a perceived serious oversights (based on check out by CEON). Oversight is reflected in inadequate citing a reference, or omission of reference from which the text used by individual states, as well as the duplication of certain references. The necessary correction refers to the parts of the article which reference source is not adequately specified and updates the list of references, in accordance with prescribed procedure.
PB  - Univerzitet u Beogradu - Tehnički fakultet u Boru, Beograd
T2  - Recycling and Sustainable Development
T1  - Ispravka: Ekološki rizici i reciklaža nanomaterijala - aktuelna pitanja (2014, vol. 7, p. 1)
T1  - Correction: Nanomaterials environmental risks and recycling: Actual issues (2014, vol. 7, p. 1)
EP  - 4
IS  - 1
SP  - 1
VL  - 9
DO  - 10.5937/ror1601001Z
UR  - conv_403
ER  - 

@article{
author = "Živković, Dragana and Balanović, Ljubiša and Mitovski, Aleksandra and Talijan, Nadežda and Štrbac, Nada and Sokić, Miroslav and Manasijević, Dragan and Minić, Duško and Ćosović, Vladan",
year = "2016",
abstract = "Uredništvo časopisa 'Reciklaža i održivi razvoj' je u dogovoru sa autorskim timom preglednog rada pod nazivom ' EKološki rizici i reciklaža nanomaterijala - aktuelna pitanja ' (D. Živković, Lj. Balanović, A. Mitovski, N. Talijan, N. Štrbac, M. Sokić, D. Manasijević, D. Minić, V. Ćosović), koji je publikovan u ovom časopisu vol.7 iz 2014. godine (str.1-8), donelo odluku da se zbog uočenog ozbiljnog previda (na osnovu provere CEON-a), koji se ogleda u neadekvatnom citiranju jedne reference, odnosno izostavljanju reference iz koje su korišćeni pojedini tekstualni navodi, kao i dupliranja pojedinih referenci, izvrši neophodna ispravka onih delova rada u kome pomenuti referentni izvor nije adekvatno naveden, kao i ispravke u listi referenci, a u skladu sa propisanom procedurom., Editorial board of the 'Recycling and Sustainable Development' Journal in agreement with the authors of the article titled 'Nanomaterials environmental risks and recycling - actual issues' (D. Zivkovic, Lj. Balanović, A. Mitovski, N. Talijan, N. Strbac , M. Sokić, D. Manasijević, D. Minić, V. Ćosović), which was published in this journal vol. 7 in 2014 (p. 1-8), made the decision to do correction of article because of a perceived serious oversights (based on check out by CEON). Oversight is reflected in inadequate citing a reference, or omission of reference from which the text used by individual states, as well as the duplication of certain references. The necessary correction refers to the parts of the article which reference source is not adequately specified and updates the list of references, in accordance with prescribed procedure.",
publisher = "Univerzitet u Beogradu - Tehnički fakultet u Boru, Beograd",
journal = "Recycling and Sustainable Development",
title = "Ispravka: Ekološki rizici i reciklaža nanomaterijala - aktuelna pitanja (2014, vol. 7, p. 1), Correction: Nanomaterials environmental risks and recycling: Actual issues (2014, vol. 7, p. 1)",
pages = "4-1",
number = "1",
volume = "9",
doi = "10.5937/ror1601001Z",
url = "conv_403"
}

Živković, D., Balanović, L., Mitovski, A., Talijan, N., Štrbac, N., Sokić, M., Manasijević, D., Minić, D.,& Ćosović, V.. (2016). Ispravka: Ekološki rizici i reciklaža nanomaterijala - aktuelna pitanja (2014, vol. 7, p. 1). in Recycling and Sustainable Development
Univerzitet u Beogradu - Tehnički fakultet u Boru, Beograd., 9(1), 1-4.
https://doi.org/10.5937/ror1601001Z
conv_403

Živković D, Balanović L, Mitovski A, Talijan N, Štrbac N, Sokić M, Manasijević D, Minić D, Ćosović V. Ispravka: Ekološki rizici i reciklaža nanomaterijala - aktuelna pitanja (2014, vol. 7, p. 1). in Recycling and Sustainable Development. 2016;9(1):1-4.
doi:10.5937/ror1601001Z
conv_403 .

Živković, Dragana, Balanović, Ljubiša, Mitovski, Aleksandra, Talijan, Nadežda, Štrbac, Nada, Sokić, Miroslav, Manasijević, Dragan, Minić, Duško, Ćosović, Vladan, "Ispravka: Ekološki rizici i reciklaža nanomaterijala - aktuelna pitanja (2014, vol. 7, p. 1)" in Recycling and Sustainable Development, 9, no. 1 (2016):1-4,
https://doi.org/10.5937/ror1601001Z .,
conv_403 .

TY  - JOUR
AU  - Mitovski, Aleksandra
AU  - Štrbac, Nada
AU  - Manasijević, Dragan
AU  - Sokić, Miroslav
AU  - Daković, Aleksandra
AU  - Živković, D.
AU  - Balanović, Ljubiša
PY  - 2015
UR  - https://ritnms.itnms.ac.rs/handle/123456789/359
AB  - The paper presents the results of experimental investigation of the chalcopyrite-pyrite concentrate oxidation in the air. Characterisation of the initial sample and oxidation products was done by ICP-AES, XRD, EDXRF methods. Phase stability diagrams were constructed for Cu-Fe-S-O system at 25,450,650 and 900 degrees C. Equilibrium composition of the charge for the optimal oxidation process was calculated. DTA-TG analysis was used for monitoring the oxidation process. Kinetic parameters in non-isothermal conditions were determined, based on Kissinger and Ozawa methods. Values of activation energies showed that all stages of the oxidation process occur in the kinetic field.
PB  - Faculty of Metallurgy
T2  - Metalurgija
T1  - Thermal analysis and kinetics of the chalcopyrite-pyrite concentrate oxidation process
EP  - 314
IS  - 2
SP  - 311
VL  - 54
UR  - conv_1039
ER  - 

@article{
author = "Mitovski, Aleksandra and Štrbac, Nada and Manasijević, Dragan and Sokić, Miroslav and Daković, Aleksandra and Živković, D. and Balanović, Ljubiša",
year = "2015",
abstract = "The paper presents the results of experimental investigation of the chalcopyrite-pyrite concentrate oxidation in the air. Characterisation of the initial sample and oxidation products was done by ICP-AES, XRD, EDXRF methods. Phase stability diagrams were constructed for Cu-Fe-S-O system at 25,450,650 and 900 degrees C. Equilibrium composition of the charge for the optimal oxidation process was calculated. DTA-TG analysis was used for monitoring the oxidation process. Kinetic parameters in non-isothermal conditions were determined, based on Kissinger and Ozawa methods. Values of activation energies showed that all stages of the oxidation process occur in the kinetic field.",
publisher = "Faculty of Metallurgy",
journal = "Metalurgija",
title = "Thermal analysis and kinetics of the chalcopyrite-pyrite concentrate oxidation process",
pages = "314-311",
number = "2",
volume = "54",
url = "conv_1039"
}

Mitovski, A., Štrbac, N., Manasijević, D., Sokić, M., Daković, A., Živković, D.,& Balanović, L.. (2015). Thermal analysis and kinetics of the chalcopyrite-pyrite concentrate oxidation process. in Metalurgija
Faculty of Metallurgy., 54(2), 311-314.
conv_1039

Mitovski A, Štrbac N, Manasijević D, Sokić M, Daković A, Živković D, Balanović L. Thermal analysis and kinetics of the chalcopyrite-pyrite concentrate oxidation process. in Metalurgija. 2015;54(2):311-314.
conv_1039 .

Mitovski, Aleksandra, Štrbac, Nada, Manasijević, Dragan, Sokić, Miroslav, Daković, Aleksandra, Živković, D., Balanović, Ljubiša, "Thermal analysis and kinetics of the chalcopyrite-pyrite concentrate oxidation process" in Metalurgija, 54, no. 2 (2015):311-314,
conv_1039 .

TY  - JOUR
AU  - Štrbac, Nada
AU  - Sokić, Miroslav
AU  - Mitovski, Aleksandra
AU  - Živković, Dragana
AU  - Marković, Branislav
AU  - Andrić, Velibor
PY  - 2015
UR  - https://ritnms.itnms.ac.rs/handle/123456789/373
AB  - U radu su prikazani rezultati DTA/TG analize polimetaličnog sulfidnog koncentrata bakra iz rudnog ležišta 'Veliki Krivelj' (Srbija) u temperaturnom intervalu 25 - 1000 °C, na osnovu koje je predložen mehanizam oksidacije prisutnih sulfida u atmosferi vazduha na povišenim temperaturama. Kao potvrda predloženom mehanizmu, u radu su prezentovani rezultati EDXRF analize polaznog uzorka, XRD analize polaznog uzorka i produkata oksidacije na 550 i 950°C i rezultati SEM/EDS analize polaznog uzorka i produkata oksidacije na 675 °C. Upoređivanjem eksperimentalnih rezultata dobijenih XRD i DTA/TG analizom može se zaključiti da se proces oksidacije ispitivanog koncentrata može podeliti u dva stupnja: prvi stupanj čine reakcije oksidacije sulfida sa karakterističnim egzotermnim efektima ispod 650 °C, dok obrazovanje sulfata i oksisulfata i njihovo razlaganje do oksida bakra i železa čini drugi stupanj, praćen karakterističnim endotermnim efektima na višim temperaturama. Kinetička analiza procesa oksidacije ispitivanog koncentrata izvršena je po metodama Kissingera i Ozawe u neizotermskim uslovima. Rezultati kinetičkih ispitivanja i vrednosti energije aktivacije pokazali su da se proces oksidacije u celom ispitivanom temperaturnom intervalu nalazi u kinetičkoj oblasti.
AB  - The paper presents DTA/TG results of polymetallic sulphide copper concentrate from the mine 'Veliki Krivelj' (Serbia) at 25-1000 °C. The reaction mechanism at elevated temperatures was proposed. As confirmation to the proposed mechanism, the results of EDXRF and, XRD analysis of the initial sample and the oxidation products at 550 and 950 °C, and the results of SEM/EDS analysis of the initial sample and the oxidation products at 675 ° C were presented. It can be concluded that the oxidation process goes through sulfide oxidation with characteristic exothermic effects, followed by sulfates and oxy- sulfates formation and their. Kinetic analysis of the oxidation process concentrates the test was performed according to the methods of Kissinger and Ozawa in non-isothermal conditions. The results of kinetic studies have shown that the oxidation process in the whole investigated temperature range is located in the kinetic field.
PB  - Savez inženjera i tehničara Srbije, Beograd
T2  - Tehnika
T1  - Određivanje mehanizma i kinetičkih parametara oksidacije sulfidnih minerala bakra na povišenim temperaturama
T1  - Determination the mechanism and kinetic parameters of copper sulfide minerals oxidation at elevated temperatures
EP  - 65
IS  - 1
SP  - 60
VL  - 70
DO  - 10.5937/tehnika1501060S
UR  - conv_16
ER  - 

@article{
author = "Štrbac, Nada and Sokić, Miroslav and Mitovski, Aleksandra and Živković, Dragana and Marković, Branislav and Andrić, Velibor",
year = "2015",
abstract = "U radu su prikazani rezultati DTA/TG analize polimetaličnog sulfidnog koncentrata bakra iz rudnog ležišta 'Veliki Krivelj' (Srbija) u temperaturnom intervalu 25 - 1000 °C, na osnovu koje je predložen mehanizam oksidacije prisutnih sulfida u atmosferi vazduha na povišenim temperaturama. Kao potvrda predloženom mehanizmu, u radu su prezentovani rezultati EDXRF analize polaznog uzorka, XRD analize polaznog uzorka i produkata oksidacije na 550 i 950°C i rezultati SEM/EDS analize polaznog uzorka i produkata oksidacije na 675 °C. Upoređivanjem eksperimentalnih rezultata dobijenih XRD i DTA/TG analizom može se zaključiti da se proces oksidacije ispitivanog koncentrata može podeliti u dva stupnja: prvi stupanj čine reakcije oksidacije sulfida sa karakterističnim egzotermnim efektima ispod 650 °C, dok obrazovanje sulfata i oksisulfata i njihovo razlaganje do oksida bakra i železa čini drugi stupanj, praćen karakterističnim endotermnim efektima na višim temperaturama. Kinetička analiza procesa oksidacije ispitivanog koncentrata izvršena je po metodama Kissingera i Ozawe u neizotermskim uslovima. Rezultati kinetičkih ispitivanja i vrednosti energije aktivacije pokazali su da se proces oksidacije u celom ispitivanom temperaturnom intervalu nalazi u kinetičkoj oblasti., The paper presents DTA/TG results of polymetallic sulphide copper concentrate from the mine 'Veliki Krivelj' (Serbia) at 25-1000 °C. The reaction mechanism at elevated temperatures was proposed. As confirmation to the proposed mechanism, the results of EDXRF and, XRD analysis of the initial sample and the oxidation products at 550 and 950 °C, and the results of SEM/EDS analysis of the initial sample and the oxidation products at 675 ° C were presented. It can be concluded that the oxidation process goes through sulfide oxidation with characteristic exothermic effects, followed by sulfates and oxy- sulfates formation and their. Kinetic analysis of the oxidation process concentrates the test was performed according to the methods of Kissinger and Ozawa in non-isothermal conditions. The results of kinetic studies have shown that the oxidation process in the whole investigated temperature range is located in the kinetic field.",
publisher = "Savez inženjera i tehničara Srbije, Beograd",
journal = "Tehnika",
title = "Određivanje mehanizma i kinetičkih parametara oksidacije sulfidnih minerala bakra na povišenim temperaturama, Determination the mechanism and kinetic parameters of copper sulfide minerals oxidation at elevated temperatures",
pages = "65-60",
number = "1",
volume = "70",
doi = "10.5937/tehnika1501060S",
url = "conv_16"
}

Štrbac, N., Sokić, M., Mitovski, A., Živković, D., Marković, B.,& Andrić, V.. (2015). Određivanje mehanizma i kinetičkih parametara oksidacije sulfidnih minerala bakra na povišenim temperaturama. in Tehnika
Savez inženjera i tehničara Srbije, Beograd., 70(1), 60-65.
https://doi.org/10.5937/tehnika1501060S
conv_16

Štrbac N, Sokić M, Mitovski A, Živković D, Marković B, Andrić V. Određivanje mehanizma i kinetičkih parametara oksidacije sulfidnih minerala bakra na povišenim temperaturama. in Tehnika. 2015;70(1):60-65.
doi:10.5937/tehnika1501060S
conv_16 .

Štrbac, Nada, Sokić, Miroslav, Mitovski, Aleksandra, Živković, Dragana, Marković, Branislav, Andrić, Velibor, "Određivanje mehanizma i kinetičkih parametara oksidacije sulfidnih minerala bakra na povišenim temperaturama" in Tehnika, 70, no. 1 (2015):60-65,
https://doi.org/10.5937/tehnika1501060S .,
conv_16 .

TY  - JOUR
AU  - Mitovski, Aleksandra
AU  - Mihajlović, Ivan
AU  - Štrbac, Nada
AU  - Sokić, Miroslav
AU  - Živković, Dragana
AU  - Živković, Živan D.
PY  - 2015
UR  - https://ritnms.itnms.ac.rs/handle/123456789/369
AB  - U prikazanom radu ispitivana je selektivna ekstrakcija arsena iz kompleksnog koncentrata na bazi enargita iz rudnika bakra u Boru, korišćenjem Na-hipohlorita kao agensa za luženje. Osnovni cilj istraživanja sastojao se u utvrđivanju uticajnih parametara i njihovog međusobnog odnosa kako bi se ostvarilo maksimalno uklanjanje arsena iz ispitivanog koncentrata. Enargit (Cu3AsS4) spada u rasprostranjene kontaminante koncentrata bakra. Tokom procesa prženja i topljenja arsen obrazuje lako isparljiva jedinjenja koja vrlo negativno utiču na zagađenje ljudi, radne i životne sredine. Zakonska regulativa ne dozvoljava topionicama bakra da tope koncentrate sa više od 0,5% arsena. Za dobijanje optimalnih uslova procesa uklanjanja arsena iz kompleksnog koncentrata bakra na bazi enargita, korišćena je tehnika matematičkog modelovanja. Modelovanje je izvršeno primenom faktorskog dizajna na eksperimentalno dobijene podatke. Odabrano je pet karakterističnih parametara procesa - ulaznih varijabli, za koje se pretpostavlja da imaju uticaja na stepen ekstrakcije arsena: koncentracija rastvora hipohlorita, masa uzorka (koncentrata), brzina mešanja, temperatura luženja i vreme luženja. Faktorski (2n) dizajn zahtevao je izvođenje 16 eksperimenata sa šest replikanata. Nakon izvođenja 22 eksperimenta, rezultati ekstrakcije arsena uzeti su kao izlazna varijabla. Proračunom su dobijene jednačine modela prvog i drugog reda. Koeficijenti u modelu drugog reda ukazuju da temperatura luženja ima najveći uticaj na ekstrakciju arsena. Drugi faktor po značaju je vreme luženja. Pozitivni predznaci ispred ova dva najuticajnija parametra ukazuju da povećanje temperature luženja, odnosno vremena luženja, utiču na povećanje stepena uklanjanja arsena iz ispitivanog koncentrata. Najveća pozitivna interakcija zapažena je između koncentracije hipohlorita i brzine mešanja tokom procesa ekstrakcije. Proračun RMSE (root mean square error) pokazao je dobro slaganje između vrednosti dobijenih eksperimentalnim istraživanjem i vrednosti dobijene modelovanjem. Pouzdanost finalnog modela testirana je primenom ANOVA testa.
AB  - Selective arsenic extraction from enargite based complex concentrate from Copper Mine in Bor (Serbia), using sodium hypochlorite as a leaching agent, was investigated in this paper. The aim was to assess the optimal conditions for the most efficient arsenic removal from the investigated concentrate, based on factorial design applied to experimentally obtained data. Five important factors with three factor levels were used as the input variables and experimentally obtained arsenic extraction yield was taken as the output variable. The first and the second final order model equations were obtained. It was found that the leaching temperature had the strongest effect on the arsenic extraction. The strongest positive interaction was between the sodium hypochlorite molar concentration and the stirring speed during extraction.
PB  - Savez hemijskih inženjera, Beograd
T2  - Hemijska industrija
T1  - Optimizacija procesa uklanjanja arsena iz kompleksnog koncentrata bakra na bazi enargita
T1  - Optimization of the arsenic removal process from enargite based complex copper concentrate
EP  - 296
IS  - 3
SP  - 287
VL  - 69
DO  - 10.2298/HEMIND140203042M
UR  - conv_305
ER  - 

@article{
author = "Mitovski, Aleksandra and Mihajlović, Ivan and Štrbac, Nada and Sokić, Miroslav and Živković, Dragana and Živković, Živan D.",
year = "2015",
abstract = "U prikazanom radu ispitivana je selektivna ekstrakcija arsena iz kompleksnog koncentrata na bazi enargita iz rudnika bakra u Boru, korišćenjem Na-hipohlorita kao agensa za luženje. Osnovni cilj istraživanja sastojao se u utvrđivanju uticajnih parametara i njihovog međusobnog odnosa kako bi se ostvarilo maksimalno uklanjanje arsena iz ispitivanog koncentrata. Enargit (Cu3AsS4) spada u rasprostranjene kontaminante koncentrata bakra. Tokom procesa prženja i topljenja arsen obrazuje lako isparljiva jedinjenja koja vrlo negativno utiču na zagađenje ljudi, radne i životne sredine. Zakonska regulativa ne dozvoljava topionicama bakra da tope koncentrate sa više od 0,5% arsena. Za dobijanje optimalnih uslova procesa uklanjanja arsena iz kompleksnog koncentrata bakra na bazi enargita, korišćena je tehnika matematičkog modelovanja. Modelovanje je izvršeno primenom faktorskog dizajna na eksperimentalno dobijene podatke. Odabrano je pet karakterističnih parametara procesa - ulaznih varijabli, za koje se pretpostavlja da imaju uticaja na stepen ekstrakcije arsena: koncentracija rastvora hipohlorita, masa uzorka (koncentrata), brzina mešanja, temperatura luženja i vreme luženja. Faktorski (2n) dizajn zahtevao je izvođenje 16 eksperimenata sa šest replikanata. Nakon izvođenja 22 eksperimenta, rezultati ekstrakcije arsena uzeti su kao izlazna varijabla. Proračunom su dobijene jednačine modela prvog i drugog reda. Koeficijenti u modelu drugog reda ukazuju da temperatura luženja ima najveći uticaj na ekstrakciju arsena. Drugi faktor po značaju je vreme luženja. Pozitivni predznaci ispred ova dva najuticajnija parametra ukazuju da povećanje temperature luženja, odnosno vremena luženja, utiču na povećanje stepena uklanjanja arsena iz ispitivanog koncentrata. Najveća pozitivna interakcija zapažena je između koncentracije hipohlorita i brzine mešanja tokom procesa ekstrakcije. Proračun RMSE (root mean square error) pokazao je dobro slaganje između vrednosti dobijenih eksperimentalnim istraživanjem i vrednosti dobijene modelovanjem. Pouzdanost finalnog modela testirana je primenom ANOVA testa., Selective arsenic extraction from enargite based complex concentrate from Copper Mine in Bor (Serbia), using sodium hypochlorite as a leaching agent, was investigated in this paper. The aim was to assess the optimal conditions for the most efficient arsenic removal from the investigated concentrate, based on factorial design applied to experimentally obtained data. Five important factors with three factor levels were used as the input variables and experimentally obtained arsenic extraction yield was taken as the output variable. The first and the second final order model equations were obtained. It was found that the leaching temperature had the strongest effect on the arsenic extraction. The strongest positive interaction was between the sodium hypochlorite molar concentration and the stirring speed during extraction.",
publisher = "Savez hemijskih inženjera, Beograd",
journal = "Hemijska industrija",
title = "Optimizacija procesa uklanjanja arsena iz kompleksnog koncentrata bakra na bazi enargita, Optimization of the arsenic removal process from enargite based complex copper concentrate",
pages = "296-287",
number = "3",
volume = "69",
doi = "10.2298/HEMIND140203042M",
url = "conv_305"
}

Mitovski, A., Mihajlović, I., Štrbac, N., Sokić, M., Živković, D.,& Živković, Ž. D.. (2015). Optimizacija procesa uklanjanja arsena iz kompleksnog koncentrata bakra na bazi enargita. in Hemijska industrija
Savez hemijskih inženjera, Beograd., 69(3), 287-296.
https://doi.org/10.2298/HEMIND140203042M
conv_305

Mitovski A, Mihajlović I, Štrbac N, Sokić M, Živković D, Živković ŽD. Optimizacija procesa uklanjanja arsena iz kompleksnog koncentrata bakra na bazi enargita. in Hemijska industrija. 2015;69(3):287-296.
doi:10.2298/HEMIND140203042M
conv_305 .

Mitovski, Aleksandra, Mihajlović, Ivan, Štrbac, Nada, Sokić, Miroslav, Živković, Dragana, Živković, Živan D., "Optimizacija procesa uklanjanja arsena iz kompleksnog koncentrata bakra na bazi enargita" in Hemijska industrija, 69, no. 3 (2015):287-296,
https://doi.org/10.2298/HEMIND140203042M .,
conv_305 .

TY  - JOUR
AU  - Mitovski, Aleksandra
AU  - Štrbac, Nada
AU  - Mihajlović, Ivan
AU  - Sokić, Miroslav
AU  - Stojanović, Jovica
PY  - 2014
UR  - https://ritnms.itnms.ac.rs/handle/123456789/318
AB  - This paper presents the experimental investigation results of the polymetallic copper concentrate oxidation process with the oxygen from the air. Concentrate characterization included chemical analysis, X-ray diffraction (XRD), energy dispersive X-ray fluorescence (EDXRF), and light microscopy. Chemical analysis and EDXRF results showed that the investigated copper concentrate consisted mainly of copper, iron and sulphur, with small amounts of zinc, lead, arsenic and other minor elements. XRD analysis showed that metals were bonded to sulphur in sulphide minerals: chalcopyrite, pyrite, luzonite, sphalerite and enargite. Those minerals were mutually bonded into aggregates, confirmed by light microscopy. The results of DTA/TG analysis were used for determining the mechanism of the oxidation process. Comparison between experimental data obtained by XRD, DTA/TG and data obtained from the phase stability diagrams, implied that the oxidation process of the investigated concentrate can be divided in two stages: the first stage consisted of sulphide oxidation reactions with the characteristic exothermal effects below 973 K while forming sulphates and oxysulphates, and the second stage, which consisted of sulphates and oxysulphates decomposition reactions and forming copper and iron oxides, with endothermal effects above 973 K. Kinetic studies were carried out in isothermal conditions in the temperature range (573-873) K. Calculations were done according to Sharp's method of reduced half-time reaction. Calculated values for the activation energies were 82 kJ mol(-1) for the initial stage of the oxidation process (up to 723 K), and 42 kJ mol(-1) for the stage of the process where desulphurization degree reached 68-86 % for the oxidation temperatures 748 K and higher. Calculated activation energy values indicated that the reaction of oxidation is a chemically controlled reaction.
PB  - Springer, Dordrecht
T2  - Journal of Thermal Analysis and Calorimetry
T1  - Thermodynamic and kinetic analysis of the polymetallic copper concentrate oxidation process
EP  - 1285
IS  - 2
SP  - 1277
VL  - 118
DO  - 10.1007/s10973-014-3838-8
UR  - conv_711
ER  - 

@article{
author = "Mitovski, Aleksandra and Štrbac, Nada and Mihajlović, Ivan and Sokić, Miroslav and Stojanović, Jovica",
year = "2014",
abstract = "This paper presents the experimental investigation results of the polymetallic copper concentrate oxidation process with the oxygen from the air. Concentrate characterization included chemical analysis, X-ray diffraction (XRD), energy dispersive X-ray fluorescence (EDXRF), and light microscopy. Chemical analysis and EDXRF results showed that the investigated copper concentrate consisted mainly of copper, iron and sulphur, with small amounts of zinc, lead, arsenic and other minor elements. XRD analysis showed that metals were bonded to sulphur in sulphide minerals: chalcopyrite, pyrite, luzonite, sphalerite and enargite. Those minerals were mutually bonded into aggregates, confirmed by light microscopy. The results of DTA/TG analysis were used for determining the mechanism of the oxidation process. Comparison between experimental data obtained by XRD, DTA/TG and data obtained from the phase stability diagrams, implied that the oxidation process of the investigated concentrate can be divided in two stages: the first stage consisted of sulphide oxidation reactions with the characteristic exothermal effects below 973 K while forming sulphates and oxysulphates, and the second stage, which consisted of sulphates and oxysulphates decomposition reactions and forming copper and iron oxides, with endothermal effects above 973 K. Kinetic studies were carried out in isothermal conditions in the temperature range (573-873) K. Calculations were done according to Sharp's method of reduced half-time reaction. Calculated values for the activation energies were 82 kJ mol(-1) for the initial stage of the oxidation process (up to 723 K), and 42 kJ mol(-1) for the stage of the process where desulphurization degree reached 68-86 % for the oxidation temperatures 748 K and higher. Calculated activation energy values indicated that the reaction of oxidation is a chemically controlled reaction.",
publisher = "Springer, Dordrecht",
journal = "Journal of Thermal Analysis and Calorimetry",
title = "Thermodynamic and kinetic analysis of the polymetallic copper concentrate oxidation process",
pages = "1285-1277",
number = "2",
volume = "118",
doi = "10.1007/s10973-014-3838-8",
url = "conv_711"
}

Mitovski, A., Štrbac, N., Mihajlović, I., Sokić, M.,& Stojanović, J.. (2014). Thermodynamic and kinetic analysis of the polymetallic copper concentrate oxidation process. in Journal of Thermal Analysis and Calorimetry
Springer, Dordrecht., 118(2), 1277-1285.
https://doi.org/10.1007/s10973-014-3838-8
conv_711

Mitovski A, Štrbac N, Mihajlović I, Sokić M, Stojanović J. Thermodynamic and kinetic analysis of the polymetallic copper concentrate oxidation process. in Journal of Thermal Analysis and Calorimetry. 2014;118(2):1277-1285.
doi:10.1007/s10973-014-3838-8
conv_711 .

Mitovski, Aleksandra, Štrbac, Nada, Mihajlović, Ivan, Sokić, Miroslav, Stojanović, Jovica, "Thermodynamic and kinetic analysis of the polymetallic copper concentrate oxidation process" in Journal of Thermal Analysis and Calorimetry, 118, no. 2 (2014):1277-1285,
https://doi.org/10.1007/s10973-014-3838-8 .,
conv_711 .

TY  - JOUR
AU  - Živković, Dragana
AU  - Balanović, Ljubiša
AU  - Mitovski, Aleksandra
AU  - Talijan, Nadežda
AU  - Štrbac, Nada
AU  - Sokić, Miroslav
AU  - Manasijević, Dragan
AU  - Minić, Duško
AU  - Ćosović, Vladan
PY  - 2014
UR  - https://ritnms.itnms.ac.rs/handle/123456789/301
AB  - Nanotehnologije se smatraju pokretačkom snagom nove industrijske revolucije. Nanonauka je tokom poslednje decenije značajno evoluirala od nauke koja se isključivo razvijala u laboratorijskim uslovima, do njene aplikacije u primenjenim tehnologijama. Trenutno, nanomaterijali se koriste u širokom spektru komercijalnih proizvoda kao što su elektronske komponente, sportska oprema, kreme za sunčanje i u biomedicinske svrhe. Veličina nanočestica omogućava im snažnu interakciju sa biološkim strukturama, tako da nanočestice predstavljaju potencijalni rizik po životnu sredinu i zdravlje ljudi. Nanometar kao veličina takođe predstavlja problem za separaciju, reciklažu i ponovno korišćenje nanočestica. Dakle, proizvodnja nanomaterijala u industrijskim razmerama i njihova primena mogli bi imati značajan uticaj na zdravlje ljudi i životnu sredinu ili stvorili probleme pri reciklaži. Sveobuhvatni termin 'nanotehnologija' nije dovoljno precizan kada se radi o upravljanju rizicima. Procena mogućih rizika zavisi od razmatranja životnog ciklusa materijala koji se proizvodi, a koji uključuje razumevanje procesa i materijala koji se koriste u proizvodnji, verovatne interakcije između proizvoda i pojedinaca ili životne sredine tokom proizvodnje nanomaterijala i njegovog životnog ciklusa, kao i metoda koje se koriste za njihovo konačno odlaganje. Sa stanovišta kontrole rizika, neophodno je identifikovati kritične faze, koje je neophodno detaljno istražiti. Pregled aktuelnih trendova ekoloških rizika i reciklaži nanomaterijala prezentovan je u ovom radu.
AB  - Nanotechnologies are being spoken of as the driving force behind a new industrial revolution. Nanoscience has matured significantly during the last decade as it has transitioned from bench top science to applied technology. Presently, nanomaterials are used in a wide variety of commercial products such as electronic components, sports equipment, sun creams and biomedical applications. The size of nanoparticles allows them to interact strongly with biological structures, so they present potential human and environmental health risk. Nanometer size presents also a problem for separation, recovery, and reuse of the particulate matter. Therefore, industrial-scale manufacturing and use of nanomaterials could have strong impact on human health and the environment or the problematic of nanomaterials recycling. The catch-all term ''nanotechnology' is not sufficiently precise for risk governance and risk management purposes. The estimation of possible risks depends on a consideration of the life cycle of the material being produced, which involves understanding the processes and materials used in manufacture, the likely interactions between the product and individuals or the environment during its manufacture and useful life, and the methods used in its eventual disposal. From a risk-control point of view it will be necessary to systematically identify those critical issues, which should be looked at in more detail. Brief review of actual trends in nanomaterials environmental risks and recycling is given in this paper.
PB  - Univerzitet u Beogradu - Tehnički fakultet u Boru, Beograd
T2  - Recycling and Sustainable Development
T1  - Ekološki rizici i reciklaža nanomaterijala - aktuelna pitanja
T1  - Nanomaterials environmental risks and recycling: Actual issues
EP  - 8
IS  - 1
SP  - 1
VL  - 7
DO  - 10.5937/ror1401001Z
UR  - conv_402
ER  - 

@article{
author = "Živković, Dragana and Balanović, Ljubiša and Mitovski, Aleksandra and Talijan, Nadežda and Štrbac, Nada and Sokić, Miroslav and Manasijević, Dragan and Minić, Duško and Ćosović, Vladan",
year = "2014",
abstract = "Nanotehnologije se smatraju pokretačkom snagom nove industrijske revolucije. Nanonauka je tokom poslednje decenije značajno evoluirala od nauke koja se isključivo razvijala u laboratorijskim uslovima, do njene aplikacije u primenjenim tehnologijama. Trenutno, nanomaterijali se koriste u širokom spektru komercijalnih proizvoda kao što su elektronske komponente, sportska oprema, kreme za sunčanje i u biomedicinske svrhe. Veličina nanočestica omogućava im snažnu interakciju sa biološkim strukturama, tako da nanočestice predstavljaju potencijalni rizik po životnu sredinu i zdravlje ljudi. Nanometar kao veličina takođe predstavlja problem za separaciju, reciklažu i ponovno korišćenje nanočestica. Dakle, proizvodnja nanomaterijala u industrijskim razmerama i njihova primena mogli bi imati značajan uticaj na zdravlje ljudi i životnu sredinu ili stvorili probleme pri reciklaži. Sveobuhvatni termin 'nanotehnologija' nije dovoljno precizan kada se radi o upravljanju rizicima. Procena mogućih rizika zavisi od razmatranja životnog ciklusa materijala koji se proizvodi, a koji uključuje razumevanje procesa i materijala koji se koriste u proizvodnji, verovatne interakcije između proizvoda i pojedinaca ili životne sredine tokom proizvodnje nanomaterijala i njegovog životnog ciklusa, kao i metoda koje se koriste za njihovo konačno odlaganje. Sa stanovišta kontrole rizika, neophodno je identifikovati kritične faze, koje je neophodno detaljno istražiti. Pregled aktuelnih trendova ekoloških rizika i reciklaži nanomaterijala prezentovan je u ovom radu., Nanotechnologies are being spoken of as the driving force behind a new industrial revolution. Nanoscience has matured significantly during the last decade as it has transitioned from bench top science to applied technology. Presently, nanomaterials are used in a wide variety of commercial products such as electronic components, sports equipment, sun creams and biomedical applications. The size of nanoparticles allows them to interact strongly with biological structures, so they present potential human and environmental health risk. Nanometer size presents also a problem for separation, recovery, and reuse of the particulate matter. Therefore, industrial-scale manufacturing and use of nanomaterials could have strong impact on human health and the environment or the problematic of nanomaterials recycling. The catch-all term ''nanotechnology' is not sufficiently precise for risk governance and risk management purposes. The estimation of possible risks depends on a consideration of the life cycle of the material being produced, which involves understanding the processes and materials used in manufacture, the likely interactions between the product and individuals or the environment during its manufacture and useful life, and the methods used in its eventual disposal. From a risk-control point of view it will be necessary to systematically identify those critical issues, which should be looked at in more detail. Brief review of actual trends in nanomaterials environmental risks and recycling is given in this paper.",
publisher = "Univerzitet u Beogradu - Tehnički fakultet u Boru, Beograd",
journal = "Recycling and Sustainable Development",
title = "Ekološki rizici i reciklaža nanomaterijala - aktuelna pitanja, Nanomaterials environmental risks and recycling: Actual issues",
pages = "8-1",
number = "1",
volume = "7",
doi = "10.5937/ror1401001Z",
url = "conv_402"
}

Živković, D., Balanović, L., Mitovski, A., Talijan, N., Štrbac, N., Sokić, M., Manasijević, D., Minić, D.,& Ćosović, V.. (2014). Ekološki rizici i reciklaža nanomaterijala - aktuelna pitanja. in Recycling and Sustainable Development
Univerzitet u Beogradu - Tehnički fakultet u Boru, Beograd., 7(1), 1-8.
https://doi.org/10.5937/ror1401001Z
conv_402

Živković D, Balanović L, Mitovski A, Talijan N, Štrbac N, Sokić M, Manasijević D, Minić D, Ćosović V. Ekološki rizici i reciklaža nanomaterijala - aktuelna pitanja. in Recycling and Sustainable Development. 2014;7(1):1-8.
doi:10.5937/ror1401001Z
conv_402 .

Živković, Dragana, Balanović, Ljubiša, Mitovski, Aleksandra, Talijan, Nadežda, Štrbac, Nada, Sokić, Miroslav, Manasijević, Dragan, Minić, Duško, Ćosović, Vladan, "Ekološki rizici i reciklaža nanomaterijala - aktuelna pitanja" in Recycling and Sustainable Development, 7, no. 1 (2014):1-8,
https://doi.org/10.5937/ror1401001Z .,
conv_402 .

TY  - JOUR
AU  - Živković, D.
AU  - Ćosović, Vladan
AU  - Živković, Z.
AU  - Štrbac, Nada
AU  - Sokić, Miroslav
AU  - Talijan, Nadežda
AU  - Boyanov, B.
AU  - Mitovski, Aleksandra
PY  - 2013
UR  - https://ritnms.itnms.ac.rs/handle/123456789/278
AB  - The results of kinetic investigation of silver sulfide (Ag2S) phase transformations-monoclinic (alpha) to body-centered-cubic (beta) and body-centered-cubic to face-centered-cubic (gamma) crystal form - are presented in this paper. Measured data obtained by thermal analysis under non-isothermal conditions were used for kinetic analysis. The activation energy for investigated phase transformation process was determined according to the methods by Kissinger and Ozawa.
PB  - Elsevier Sci Ltd, Oxford
T2  - Materials Science in Semiconductor Processing
T1  - Kinetic investigation of silver sulfide phase transformations
EP  - 220
IS  - 1
SP  - 217
VL  - 16
DO  - 10.1016/j.mssp.2012.06.023
UR  - conv_639
ER  - 

@article{
author = "Živković, D. and Ćosović, Vladan and Živković, Z. and Štrbac, Nada and Sokić, Miroslav and Talijan, Nadežda and Boyanov, B. and Mitovski, Aleksandra",
year = "2013",
abstract = "The results of kinetic investigation of silver sulfide (Ag2S) phase transformations-monoclinic (alpha) to body-centered-cubic (beta) and body-centered-cubic to face-centered-cubic (gamma) crystal form - are presented in this paper. Measured data obtained by thermal analysis under non-isothermal conditions were used for kinetic analysis. The activation energy for investigated phase transformation process was determined according to the methods by Kissinger and Ozawa.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Materials Science in Semiconductor Processing",
title = "Kinetic investigation of silver sulfide phase transformations",
pages = "220-217",
number = "1",
volume = "16",
doi = "10.1016/j.mssp.2012.06.023",
url = "conv_639"
}

Živković, D., Ćosović, V., Živković, Z., Štrbac, N., Sokić, M., Talijan, N., Boyanov, B.,& Mitovski, A.. (2013). Kinetic investigation of silver sulfide phase transformations. in Materials Science in Semiconductor Processing
Elsevier Sci Ltd, Oxford., 16(1), 217-220.
https://doi.org/10.1016/j.mssp.2012.06.023
conv_639

Živković D, Ćosović V, Živković Z, Štrbac N, Sokić M, Talijan N, Boyanov B, Mitovski A. Kinetic investigation of silver sulfide phase transformations. in Materials Science in Semiconductor Processing. 2013;16(1):217-220.
doi:10.1016/j.mssp.2012.06.023
conv_639 .

Živković, D., Ćosović, Vladan, Živković, Z., Štrbac, Nada, Sokić, Miroslav, Talijan, Nadežda, Boyanov, B., Mitovski, Aleksandra, "Kinetic investigation of silver sulfide phase transformations" in Materials Science in Semiconductor Processing, 16, no. 1 (2013):217-220,
https://doi.org/10.1016/j.mssp.2012.06.023 .,
conv_639 .

TY  - JOUR
AU  - Štrbac, Nada
AU  - Mitovski, Aleksandra
AU  - Mihajlović, Ivan
AU  - Vuković, Milovan
AU  - Sokić, Miroslav
AU  - Andrić, Velibor
PY  - 2012
UR  - https://ritnms.itnms.ac.rs/handle/123456789/221
AB  - Problemi koji se odnose na industrijsko zagađenje, iz godine u godinu postaju sve intezivniji i značajniji, kako na lokalnom, tako i na globalnom nivou. Osnovni razlog su emisije različitih zagađujućih materija koje nastaju kao posledice industrijskih aktivnosti. Problemi koji nastaju tokom ovih aktivnosti su zagađenje voda, zagađenje vazduha, stvaranje opasnog otpada itd. Priroda emisije i uticaj industrije na sredinu, u velikoj meri zavisi od specifičnosti same industrije. Tehnologija pirometalurškog tretmana koncentrata bakra po konvencionalnom postupku, koja se još uvek koristi u pogonima Topionice u Boru, dovela je do značajne degradacije stanja životne sredine u Boru i okolini. Smanjenje koncentracije bakra u domaćim rudnim ležištima dovela je do neophodnosti prerade rude sa oboda već eksploatisanih rudnih tela u kojima je povećana koncentracija štetnih primesa i pratioca bakra, u prvom redu: Zn, Pb, As, Cd, Hg, Ni, i drugih. U regionu Bora i okoline, ova problematika postaje sve značajnija sa stanovišta buduće ekstrakcije bakra iz domaćih koncentrata. Naime, u pojedinim, još uvek neeksplatisanim, rudnim nalazištima u okolini Bora se nalazi velika količina bakra, ali sa povišenim sadržajem štetnih komponenti.
AB  - Recently, the problems relating to the industrial pollution have become more intensive and important at local as well as global level. The primary reason is an emission of polluting substances that appear as a consequence of various industrial activities. These activities produce the whole range of harms to the environment such as: water pollution, air pollution, hazardous waste production etc. The scope of emission of pollutants and industrial affect on the environment depend on specific characteristics of various industries. Pyrometallurgical treatment of copper concentrates, a conventional technological process, still used in the Copper Smelter in Bor, caused serious damages in the environment (in Bor as well in the region). In addition, the decrease of a copper content in domestic row minerals led to the necessity of treatment ores from the periphery (already exploited mineral ores) with an increased concentrations of harm components and metals tied to copper; first of all, Zn, Pb, As, Cd, Hg, Ni and others. In the Bor region this problem has become more important in regard to the future extraction of concentrates from domestic sources. Namely, in some copper minerals, recently discovered and, hence, not exploited, a significant amount of copper with higher contents of pollutants is present.
PB  - Naučno-stručno društvo za zaštitu životne sredine Srbije - Ecologica, Beograd
T2  - Ecologica
T1  - Mogućnosti prerade nestandardnih koncentrata bakra i zaštita životne sredine
T1  - Possibilities for treatment of non-standard copper concentrates and environmental protection
EP  - 379
IS  - 67
SP  - 375
VL  - 19
UR  - conv_249
ER  - 

@article{
author = "Štrbac, Nada and Mitovski, Aleksandra and Mihajlović, Ivan and Vuković, Milovan and Sokić, Miroslav and Andrić, Velibor",
year = "2012",
abstract = "Problemi koji se odnose na industrijsko zagađenje, iz godine u godinu postaju sve intezivniji i značajniji, kako na lokalnom, tako i na globalnom nivou. Osnovni razlog su emisije različitih zagađujućih materija koje nastaju kao posledice industrijskih aktivnosti. Problemi koji nastaju tokom ovih aktivnosti su zagađenje voda, zagađenje vazduha, stvaranje opasnog otpada itd. Priroda emisije i uticaj industrije na sredinu, u velikoj meri zavisi od specifičnosti same industrije. Tehnologija pirometalurškog tretmana koncentrata bakra po konvencionalnom postupku, koja se još uvek koristi u pogonima Topionice u Boru, dovela je do značajne degradacije stanja životne sredine u Boru i okolini. Smanjenje koncentracije bakra u domaćim rudnim ležištima dovela je do neophodnosti prerade rude sa oboda već eksploatisanih rudnih tela u kojima je povećana koncentracija štetnih primesa i pratioca bakra, u prvom redu: Zn, Pb, As, Cd, Hg, Ni, i drugih. U regionu Bora i okoline, ova problematika postaje sve značajnija sa stanovišta buduće ekstrakcije bakra iz domaćih koncentrata. Naime, u pojedinim, još uvek neeksplatisanim, rudnim nalazištima u okolini Bora se nalazi velika količina bakra, ali sa povišenim sadržajem štetnih komponenti., Recently, the problems relating to the industrial pollution have become more intensive and important at local as well as global level. The primary reason is an emission of polluting substances that appear as a consequence of various industrial activities. These activities produce the whole range of harms to the environment such as: water pollution, air pollution, hazardous waste production etc. The scope of emission of pollutants and industrial affect on the environment depend on specific characteristics of various industries. Pyrometallurgical treatment of copper concentrates, a conventional technological process, still used in the Copper Smelter in Bor, caused serious damages in the environment (in Bor as well in the region). In addition, the decrease of a copper content in domestic row minerals led to the necessity of treatment ores from the periphery (already exploited mineral ores) with an increased concentrations of harm components and metals tied to copper; first of all, Zn, Pb, As, Cd, Hg, Ni and others. In the Bor region this problem has become more important in regard to the future extraction of concentrates from domestic sources. Namely, in some copper minerals, recently discovered and, hence, not exploited, a significant amount of copper with higher contents of pollutants is present.",
publisher = "Naučno-stručno društvo za zaštitu životne sredine Srbije - Ecologica, Beograd",
journal = "Ecologica",
title = "Mogućnosti prerade nestandardnih koncentrata bakra i zaštita životne sredine, Possibilities for treatment of non-standard copper concentrates and environmental protection",
pages = "379-375",
number = "67",
volume = "19",
url = "conv_249"
}

Štrbac, N., Mitovski, A., Mihajlović, I., Vuković, M., Sokić, M.,& Andrić, V.. (2012). Mogućnosti prerade nestandardnih koncentrata bakra i zaštita životne sredine. in Ecologica
Naučno-stručno društvo za zaštitu životne sredine Srbije - Ecologica, Beograd., 19(67), 375-379.
conv_249

Štrbac N, Mitovski A, Mihajlović I, Vuković M, Sokić M, Andrić V. Mogućnosti prerade nestandardnih koncentrata bakra i zaštita životne sredine. in Ecologica. 2012;19(67):375-379.
conv_249 .

Štrbac, Nada, Mitovski, Aleksandra, Mihajlović, Ivan, Vuković, Milovan, Sokić, Miroslav, Andrić, Velibor, "Mogućnosti prerade nestandardnih koncentrata bakra i zaštita životne sredine" in Ecologica, 19, no. 67 (2012):375-379,
conv_249 .

TY  - JOUR
AU  - Mitovski, Aleksandra
AU  - Sokić, Miroslav
AU  - Štrbac, Nada
AU  - Živković, Dragana
AU  - Balanović, Ljubiša
PY  - 2012
UR  - https://ritnms.itnms.ac.rs/handle/123456789/220
AB  - Kontinuirani informatički razvoj za posledicu ima stalni rast u proizvodnji čvrstog otpada. Elektronski otpad je deo univerzuma zastarelih i / ili oštećenih uređaja i komponenata koje treba na kraju njihovog životnog ciklusa na ekološki ispravan način odložiti, odnosno što je ekološki prihvatljivije - reciklirati. U ovom radu razmatrani su različiti hemijski postupci - korišćeni ili predloženi - za dobijanje metala iz elektronskog otpada, dostupni u literaturi i njihove prednosti i nedostatci. Svi navedeni postupci uključuju sledeće procese: pirometalurgiju, hidrometalurgiju, elektrohemiju i biotehnologiju (poslednje spomenuti proces neće biti predmet razmatranja u ovom radu). Dalji razvoj postojećih tehnologija ponovnog dobijanja metala iz elektronskog otpada usmerava se ka razvoju procesa sa većom efikasnošću, strogoj kontroli efluenata i emisija, primeni netoksičnih reagenasa uz mogućnost njihove maksimalne reciklabilnosti, smanjenju utroška energije - na ekonomski i ekološki siguran način.
AB  - The continuous IT development has resulted in steady growth in solid waste production. Electronic scrap is a part of the universe of obsolete and/or defective equipment and components that need to be disposed or, ecologically more appropriate, to be recycled, at the end of their life cycle. This paper considers various chemical processes - used or proposed - for obtaining metals from electronic waste, available in the literature and their advantages and disadvantages. All listed procedures include following processes: pyrometallurgy, hydrometallurgy, electrochemistry and biotechnology (the last mentioned process will not be considered in this paper). Further development of recovering metals technologies from electronic waste is directed towards the process development with greater efficiency, strict control of effluents and emissions, implementation of non-toxic reagents, with the possibility of their maximum recyclability, reduced energy consumption - in an economically and environmentally safe manner.
PB  - Naučno-stručno društvo za zaštitu životne sredine Srbije - Ecologica, Beograd
T2  - Ecologica
T1  - Aktuelne metode dobijanja metala iz elektronskog otpada
T1  - Current methods for recovering metals from electronic waste
EP  - 36
IS  - 65
SP  - 30
VL  - 19
UR  - conv_248
ER  - 

@article{
author = "Mitovski, Aleksandra and Sokić, Miroslav and Štrbac, Nada and Živković, Dragana and Balanović, Ljubiša",
year = "2012",
abstract = "Kontinuirani informatički razvoj za posledicu ima stalni rast u proizvodnji čvrstog otpada. Elektronski otpad je deo univerzuma zastarelih i / ili oštećenih uređaja i komponenata koje treba na kraju njihovog životnog ciklusa na ekološki ispravan način odložiti, odnosno što je ekološki prihvatljivije - reciklirati. U ovom radu razmatrani su različiti hemijski postupci - korišćeni ili predloženi - za dobijanje metala iz elektronskog otpada, dostupni u literaturi i njihove prednosti i nedostatci. Svi navedeni postupci uključuju sledeće procese: pirometalurgiju, hidrometalurgiju, elektrohemiju i biotehnologiju (poslednje spomenuti proces neće biti predmet razmatranja u ovom radu). Dalji razvoj postojećih tehnologija ponovnog dobijanja metala iz elektronskog otpada usmerava se ka razvoju procesa sa većom efikasnošću, strogoj kontroli efluenata i emisija, primeni netoksičnih reagenasa uz mogućnost njihove maksimalne reciklabilnosti, smanjenju utroška energije - na ekonomski i ekološki siguran način., The continuous IT development has resulted in steady growth in solid waste production. Electronic scrap is a part of the universe of obsolete and/or defective equipment and components that need to be disposed or, ecologically more appropriate, to be recycled, at the end of their life cycle. This paper considers various chemical processes - used or proposed - for obtaining metals from electronic waste, available in the literature and their advantages and disadvantages. All listed procedures include following processes: pyrometallurgy, hydrometallurgy, electrochemistry and biotechnology (the last mentioned process will not be considered in this paper). Further development of recovering metals technologies from electronic waste is directed towards the process development with greater efficiency, strict control of effluents and emissions, implementation of non-toxic reagents, with the possibility of their maximum recyclability, reduced energy consumption - in an economically and environmentally safe manner.",
publisher = "Naučno-stručno društvo za zaštitu životne sredine Srbije - Ecologica, Beograd",
journal = "Ecologica",
title = "Aktuelne metode dobijanja metala iz elektronskog otpada, Current methods for recovering metals from electronic waste",
pages = "36-30",
number = "65",
volume = "19",
url = "conv_248"
}

Mitovski, A., Sokić, M., Štrbac, N., Živković, D.,& Balanović, L.. (2012). Aktuelne metode dobijanja metala iz elektronskog otpada. in Ecologica
Naučno-stručno društvo za zaštitu životne sredine Srbije - Ecologica, Beograd., 19(65), 30-36.
conv_248

Mitovski A, Sokić M, Štrbac N, Živković D, Balanović L. Aktuelne metode dobijanja metala iz elektronskog otpada. in Ecologica. 2012;19(65):30-36.
conv_248 .

Mitovski, Aleksandra, Sokić, Miroslav, Štrbac, Nada, Živković, Dragana, Balanović, Ljubiša, "Aktuelne metode dobijanja metala iz elektronskog otpada" in Ecologica, 19, no. 65 (2012):30-36,
conv_248 .