TY  - CONF
AU  - Bugarčić, Mladen
AU  - Jovanović, Aleksandar
AU  - Sokić, Miroslav
AU  - Marković, Branislav
AU  - Pantović Spajić, Katarina
AU  - Marinković, Aleksandar
PY  - 2023
UR  - https://ritnms.itnms.ac.rs/handle/123456789/991
AB  - Отпадне воде представљају велики еколошки притисак на читав екосистем.
Загађујуће материје у отпадној води, као што су боје, могу изазвати токсичне после-
дице по живи свет. Из тог разлога је потребно развити нове, ефикасне материјале који
у процесу адсорпције могу да уклоне присутне полутанте и реше проблем загађења.
Слојевити двоструки хидроксиди добијени процесом таложења при ниском преза-
сићењу примењени су у процесу уклањања боје метанил-жуто из водених раствора.
Приликом експеримената, варирани су параметри као што су маса адсорбента, време
контакта, температура. Добијеии резултати показују висок адсорпциони капацитет 74
mg g-1 и ендотермну природу процеса адсорпције.
AB  - Wastewater represents a major environmental pressure on the entire ecosystem.
Pollutants in wastewater, such as dyes, can cause toxic effects on living beings. Therefore, it
is necessary to develop new, efficient sorption materials that can remove the present
pollutants and solve the pollution problem. The layered double hydroxides obtained by the
co-precipitation process at low supersaturation were applied in the process of removing methanil-yellow color from aqueous solutions. During the experiments, parameters such
as adsorbent mass, contact time, and temperature were varied. The obtained results
show a high adsorption capacity of 74 mg g-1 and an endothermic nature during
adsorption process.
PB  - Beograd : Savez inženjera i tehničara Srbije
C3  - 44. Međunarodna konferencija Vodovod i kanalizacija ’23
T1  - Slojeviti dvostruki hidroksidi za uklanjanje boja iz otpadnih voda
EP  - 242
SP  - 236
ER  - 

@conference{
author = "Bugarčić, Mladen and Jovanović, Aleksandar and Sokić, Miroslav and Marković, Branislav and Pantović Spajić, Katarina and Marinković, Aleksandar",
year = "2023",
abstract = "Отпадне воде представљају велики еколошки притисак на читав екосистем.
Загађујуће материје у отпадној води, као што су боје, могу изазвати токсичне после-
дице по живи свет. Из тог разлога је потребно развити нове, ефикасне материјале који
у процесу адсорпције могу да уклоне присутне полутанте и реше проблем загађења.
Слојевити двоструки хидроксиди добијени процесом таложења при ниском преза-
сићењу примењени су у процесу уклањања боје метанил-жуто из водених раствора.
Приликом експеримената, варирани су параметри као што су маса адсорбента, време
контакта, температура. Добијеии резултати показују висок адсорпциони капацитет 74
mg g-1 и ендотермну природу процеса адсорпције., Wastewater represents a major environmental pressure on the entire ecosystem.
Pollutants in wastewater, such as dyes, can cause toxic effects on living beings. Therefore, it
is necessary to develop new, efficient sorption materials that can remove the present
pollutants and solve the pollution problem. The layered double hydroxides obtained by the
co-precipitation process at low supersaturation were applied in the process of removing methanil-yellow color from aqueous solutions. During the experiments, parameters such
as adsorbent mass, contact time, and temperature were varied. The obtained results
show a high adsorption capacity of 74 mg g-1 and an endothermic nature during
adsorption process.",
publisher = "Beograd : Savez inženjera i tehničara Srbije",
journal = "44. Međunarodna konferencija Vodovod i kanalizacija ’23",
title = "Slojeviti dvostruki hidroksidi za uklanjanje boja iz otpadnih voda",
pages = "242-236"
}

Bugarčić, M., Jovanović, A., Sokić, M., Marković, B., Pantović Spajić, K.,& Marinković, A.. (2023). Slojeviti dvostruki hidroksidi za uklanjanje boja iz otpadnih voda. in 44. Međunarodna konferencija Vodovod i kanalizacija ’23
Beograd : Savez inženjera i tehničara Srbije., 236-242.

Bugarčić M, Jovanović A, Sokić M, Marković B, Pantović Spajić K, Marinković A. Slojeviti dvostruki hidroksidi za uklanjanje boja iz otpadnih voda. in 44. Međunarodna konferencija Vodovod i kanalizacija ’23. 2023;:236-242..

Bugarčić, Mladen, Jovanović, Aleksandar, Sokić, Miroslav, Marković, Branislav, Pantović Spajić, Katarina, Marinković, Aleksandar, "Slojeviti dvostruki hidroksidi za uklanjanje boja iz otpadnih voda" in 44. Međunarodna konferencija Vodovod i kanalizacija ’23 (2023):236-242.

TY  - CONF
AU  - Pantović Spajić, Katarina
AU  - Pantović Pavlović, Marijana
AU  - Božić, Katarina
AU  - Gjumišev, Đorđe
AU  - Panić, Vladimir
AU  - Pavlović, Miroslav
AU  - Stojanović, Ksenija
PY  - 2023
UR  - https://ritnms.itnms.ac.rs/handle/123456789/1119
AB  - The removal of organic and inorganic sulfur from the Bogovina Basin subbituminous coal by
electrochemical redox reactions was performed. The effect of presence of active bromine species
on the desulfurization process was monitored. The desulfurization was performed in inorganic
acidic solutions that contained different bromide concentrations and in pure acid solution. To
determine the optimal conditions for the desulfurization process, polarization curves were
recorded in three different electrolytes: 0.1 M H2SO4, 0.1 M H2SO4 + 0.01 M KBr, and 0.1 M
H2SO4 + 0.1 M KBr using graphite and dimensionally stable anode (DSA) electrodes as the
anode, while in all cases stainless steel S31603 electrode was used as cathode. By analyzing the
results obtained from the polarization curves, 0.1 M H2SO4 and 0.1 M H2SO4 + 0.1 M KBr were
chosen as the most suitable electrolytes. Also, it was found that the DSA anode showed better
results in terms of energy efficiency of the process compared to the graphite anode and therefore
it was selected for the coal desulfurization process. It is considered that finely suspended coal
particles in an electrolyte can behave according to bipolar electrochemistry. Coal was treated
for 4 hours in two selected electrolytes. The suspension was sampled at different times up to 240
min from the beginning of the process. Sulfur content in coal was determined by elemental
analysis. The results showed that the sulfur content decreases faster in the case of the electrolyte
containing KBr, i.e. that the desulfurization effect is significantly better than in the case of the
system containing only H2SO4. It can be concluded that active bromine species accelerate the
desulfurization process and thus improve energy efficiency.
PB  - Zvornik : University of East Sarajevo, Faculty of Technology
C3  - VIII International Congress “Engineering, Environment and Materials in Process Industry“
T1  - Study of the effects of active bromine species presence in electrolytic desulfurization of subbituminous coal
EP  - 64
SP  - 64
ER  - 

@conference{
author = "Pantović Spajić, Katarina and Pantović Pavlović, Marijana and Božić, Katarina and Gjumišev, Đorđe and Panić, Vladimir and Pavlović, Miroslav and Stojanović, Ksenija",
year = "2023",
abstract = "The removal of organic and inorganic sulfur from the Bogovina Basin subbituminous coal by
electrochemical redox reactions was performed. The effect of presence of active bromine species
on the desulfurization process was monitored. The desulfurization was performed in inorganic
acidic solutions that contained different bromide concentrations and in pure acid solution. To
determine the optimal conditions for the desulfurization process, polarization curves were
recorded in three different electrolytes: 0.1 M H2SO4, 0.1 M H2SO4 + 0.01 M KBr, and 0.1 M
H2SO4 + 0.1 M KBr using graphite and dimensionally stable anode (DSA) electrodes as the
anode, while in all cases stainless steel S31603 electrode was used as cathode. By analyzing the
results obtained from the polarization curves, 0.1 M H2SO4 and 0.1 M H2SO4 + 0.1 M KBr were
chosen as the most suitable electrolytes. Also, it was found that the DSA anode showed better
results in terms of energy efficiency of the process compared to the graphite anode and therefore
it was selected for the coal desulfurization process. It is considered that finely suspended coal
particles in an electrolyte can behave according to bipolar electrochemistry. Coal was treated
for 4 hours in two selected electrolytes. The suspension was sampled at different times up to 240
min from the beginning of the process. Sulfur content in coal was determined by elemental
analysis. The results showed that the sulfur content decreases faster in the case of the electrolyte
containing KBr, i.e. that the desulfurization effect is significantly better than in the case of the
system containing only H2SO4. It can be concluded that active bromine species accelerate the
desulfurization process and thus improve energy efficiency.",
publisher = "Zvornik : University of East Sarajevo, Faculty of Technology",
journal = "VIII International Congress “Engineering, Environment and Materials in Process Industry“",
title = "Study of the effects of active bromine species presence in electrolytic desulfurization of subbituminous coal",
pages = "64-64"
}

Pantović Spajić, K., Pantović Pavlović, M., Božić, K., Gjumišev, Đ., Panić, V., Pavlović, M.,& Stojanović, K.. (2023). Study of the effects of active bromine species presence in electrolytic desulfurization of subbituminous coal. in VIII International Congress “Engineering, Environment and Materials in Process Industry“
Zvornik : University of East Sarajevo, Faculty of Technology., 64-64.

Pantović Spajić K, Pantović Pavlović M, Božić K, Gjumišev Đ, Panić V, Pavlović M, Stojanović K. Study of the effects of active bromine species presence in electrolytic desulfurization of subbituminous coal. in VIII International Congress “Engineering, Environment and Materials in Process Industry“. 2023;:64-64..

Pantović Spajić, Katarina, Pantović Pavlović, Marijana, Božić, Katarina, Gjumišev, Đorđe, Panić, Vladimir, Pavlović, Miroslav, Stojanović, Ksenija, "Study of the effects of active bromine species presence in electrolytic desulfurization of subbituminous coal" in VIII International Congress “Engineering, Environment and Materials in Process Industry“ (2023):64-64.

TY  - CONF
AU  - Knežević, Petar
AU  - Vuković, Nikola
AU  - Mihajlović, Katarina
AU  - Vujaković, Marko
AU  - Pantović-Spajić, Katarina
AU  - Radosavljević-Mihajlović, Ana
PY  - 2023
UR  - https://ritnms.itnms.ac.rs/handle/123456789/1197
AB  - One of the most interesting secondary raw materials within the Kolubara Basin is diatomaceous earth or diatomite, with reserves of 308.670 t in fields B and C. Chemical and mineralogical tests were performed on diatomaceous earth samples. The results of these tests are presented in this paper. Diatomite is a soft sedimentary rock formed by the deposition of cell walls (frustulae) of single-celled algae-diatoms at the bottom of sea and lake basen. Diatom frustules consist of two parts that lie on top of each other and represent a highly porous skeleton of amorphous hydrated silica. Diatom frustule size ranges from 1 μm to 1 mm, usually 10-200 μm.The specific area (SBET (m2/g)) is 47.6. The SEM/EDS, BET and FTIR methods were used for characterization. Based on the presented results, diatomaceous earth can be used in the pharmaceutical, ceramic and food industries.
PB  - Belgrade : Serbian Ceramic Society
C3  - The Eleventh Serbian Ceramic Society Conference »Advanced Ceramics and Application«
T1  - Diatomic earth: Structure and modification
EP  - 49
SP  - 49
ER  - 

@conference{
author = "Knežević, Petar and Vuković, Nikola and Mihajlović, Katarina and Vujaković, Marko and Pantović-Spajić, Katarina and Radosavljević-Mihajlović, Ana",
year = "2023",
abstract = "One of the most interesting secondary raw materials within the Kolubara Basin is diatomaceous earth or diatomite, with reserves of 308.670 t in fields B and C. Chemical and mineralogical tests were performed on diatomaceous earth samples. The results of these tests are presented in this paper. Diatomite is a soft sedimentary rock formed by the deposition of cell walls (frustulae) of single-celled algae-diatoms at the bottom of sea and lake basen. Diatom frustules consist of two parts that lie on top of each other and represent a highly porous skeleton of amorphous hydrated silica. Diatom frustule size ranges from 1 μm to 1 mm, usually 10-200 μm.The specific area (SBET (m2/g)) is 47.6. The SEM/EDS, BET and FTIR methods were used for characterization. Based on the presented results, diatomaceous earth can be used in the pharmaceutical, ceramic and food industries.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "The Eleventh Serbian Ceramic Society Conference »Advanced Ceramics and Application«",
title = "Diatomic earth: Structure and modification",
pages = "49-49"
}

Knežević, P., Vuković, N., Mihajlović, K., Vujaković, M., Pantović-Spajić, K.,& Radosavljević-Mihajlović, A.. (2023). Diatomic earth: Structure and modification. in The Eleventh Serbian Ceramic Society Conference »Advanced Ceramics and Application«
Belgrade : Serbian Ceramic Society., 49-49.

Knežević P, Vuković N, Mihajlović K, Vujaković M, Pantović-Spajić K, Radosavljević-Mihajlović A. Diatomic earth: Structure and modification. in The Eleventh Serbian Ceramic Society Conference »Advanced Ceramics and Application«. 2023;:49-49..

Knežević, Petar, Vuković, Nikola, Mihajlović, Katarina, Vujaković, Marko, Pantović-Spajić, Katarina, Radosavljević-Mihajlović, Ana, "Diatomic earth: Structure and modification" in The Eleventh Serbian Ceramic Society Conference »Advanced Ceramics and Application« (2023):49-49.

TY  - JOUR
AU  - Đorđević, Nataša
AU  - Mihajlović, Slavica
AU  - Pantović-Spajić, Katarina
AU  - Lozanović-Šajić, Jasmina
AU  - Grubišić, Mirko
PY  - 2022
UR  - https://ritnms.itnms.ac.rs/handle/123456789/639
AB  - During mechanical activation, energy of treated material is increase to a higher level. This can lead to chemical transformation of the activated material. This is the point where we can talk about mechanochemical transformations that have occurred as a result of mechanical activation. The subject of this paper is to monitor mass changes of material after different degrees of activation. One of the substances which is often used in the processes of mechanochemical synthesis is sodium carbonate. The mass changes occurring during the treatment were detected and measured by various methods, depending on the processing environment. The mass increase was attributed to chemisorption of moisture and carbon-dioxide present in air, as a consequence of the sodium carbonate activation. The methods we used were calcimetric chemical analysis. According to obtained results, it was found that activated sodium carbonate is mass-transformed into sodium bicarbonate, whereby these changes are functionally dependent on activation time and the processing atmosphere.
PB  - Univerzitet u Beogradu - Rudarsko-geološki fakultet, Beograd
T2  - Podzemni radovi
T1  - Transformations of mechanochemical activated Na2CO3
EP  - 21
IS  - 41
SP  - 15
DO  - 10.5937/podrad2241015Q
UR  - conv_238
ER  - 

@article{
author = "Đorđević, Nataša and Mihajlović, Slavica and Pantović-Spajić, Katarina and Lozanović-Šajić, Jasmina and Grubišić, Mirko",
year = "2022",
abstract = "During mechanical activation, energy of treated material is increase to a higher level. This can lead to chemical transformation of the activated material. This is the point where we can talk about mechanochemical transformations that have occurred as a result of mechanical activation. The subject of this paper is to monitor mass changes of material after different degrees of activation. One of the substances which is often used in the processes of mechanochemical synthesis is sodium carbonate. The mass changes occurring during the treatment were detected and measured by various methods, depending on the processing environment. The mass increase was attributed to chemisorption of moisture and carbon-dioxide present in air, as a consequence of the sodium carbonate activation. The methods we used were calcimetric chemical analysis. According to obtained results, it was found that activated sodium carbonate is mass-transformed into sodium bicarbonate, whereby these changes are functionally dependent on activation time and the processing atmosphere.",
publisher = "Univerzitet u Beogradu - Rudarsko-geološki fakultet, Beograd",
journal = "Podzemni radovi",
title = "Transformations of mechanochemical activated Na2CO3",
pages = "21-15",
number = "41",
doi = "10.5937/podrad2241015Q",
url = "conv_238"
}

Đorđević, N., Mihajlović, S., Pantović-Spajić, K., Lozanović-Šajić, J.,& Grubišić, M.. (2022). Transformations of mechanochemical activated Na2CO3. in Podzemni radovi
Univerzitet u Beogradu - Rudarsko-geološki fakultet, Beograd.(41), 15-21.
https://doi.org/10.5937/podrad2241015Q
conv_238

Đorđević N, Mihajlović S, Pantović-Spajić K, Lozanović-Šajić J, Grubišić M. Transformations of mechanochemical activated Na2CO3. in Podzemni radovi. 2022;(41):15-21.
doi:10.5937/podrad2241015Q
conv_238 .

Đorđević, Nataša, Mihajlović, Slavica, Pantović-Spajić, Katarina, Lozanović-Šajić, Jasmina, Grubišić, Mirko, "Transformations of mechanochemical activated Na2CO3" in Podzemni radovi, no. 41 (2022):15-21,
https://doi.org/10.5937/podrad2241015Q .,
conv_238 .

TY  - CONF
AU  - Pantović Spajić, Katarina
AU  - Marković, Branislav
AU  - Sokić, Miroslav
AU  - Jovanović, Gvozden
AU  - Stojanović, Ksenija
PY  - 2021
UR  - https://ritnms.itnms.ac.rs/handle/123456789/1124
AB  - Coal is a well-known fossil fuel. It was used as a non-renewable energy source for several centuries. Nowadays it is mainly used for electricity generation in power plants or heat generation for industrial and home utilization.
There are many types of coal that differ in composition and calorific value, as well as in the amounts of undesired hazard substances produced by combustion. Depending on the coal composition, environmental impact can be reduced by its treatment before combustion. One of the cheap and effective methods is the chemical leaching of coal that reduces sulfur content and the amount of mineral matter (ash). Lowering the ash amount increases the calorific value of coal, reduces its transportation cost, and reduces the negative environmental impact of toxic elements, which are usually present in ash. Another benefit of coal leaching, that results from lowering the sulfur content is reduced emission of toxic gases (SO2 and SO3) during combustion. In order to determine the optimal leaching conditions for the treatment of different types of coal, numerous studies have been done, investigating various chemical reagents, including inorganic and organic acids, alkalis, oxidative reagents, and their combinations [1, 2]. The key parameters that effect leaching efficiency are type and concentration of reagent, reaction temperature, the mass ratio between coal and leaching reagent, coal particle size, and reaction time. The degree of leaching efficiency is measured by the level of demineralization and desulphurization [3]. The current review summarises recent results and further plans for the development of an efficient and environmentally friendly method for the chemical leaching of Serbian sub-bituminous coal.
PB  - Belgrade : Innovation Center of Faculty of Mechanical Engineering
C3  - International Conference of Experimental and Numerical Investigations and New Technologies
T1  - A review of coal demineralization and desulphurization by chemical leaching
EP  - 99
SP  - 99
ER  - 

@conference{
author = "Pantović Spajić, Katarina and Marković, Branislav and Sokić, Miroslav and Jovanović, Gvozden and Stojanović, Ksenija",
year = "2021",
abstract = "Coal is a well-known fossil fuel. It was used as a non-renewable energy source for several centuries. Nowadays it is mainly used for electricity generation in power plants or heat generation for industrial and home utilization.
There are many types of coal that differ in composition and calorific value, as well as in the amounts of undesired hazard substances produced by combustion. Depending on the coal composition, environmental impact can be reduced by its treatment before combustion. One of the cheap and effective methods is the chemical leaching of coal that reduces sulfur content and the amount of mineral matter (ash). Lowering the ash amount increases the calorific value of coal, reduces its transportation cost, and reduces the negative environmental impact of toxic elements, which are usually present in ash. Another benefit of coal leaching, that results from lowering the sulfur content is reduced emission of toxic gases (SO2 and SO3) during combustion. In order to determine the optimal leaching conditions for the treatment of different types of coal, numerous studies have been done, investigating various chemical reagents, including inorganic and organic acids, alkalis, oxidative reagents, and their combinations [1, 2]. The key parameters that effect leaching efficiency are type and concentration of reagent, reaction temperature, the mass ratio between coal and leaching reagent, coal particle size, and reaction time. The degree of leaching efficiency is measured by the level of demineralization and desulphurization [3]. The current review summarises recent results and further plans for the development of an efficient and environmentally friendly method for the chemical leaching of Serbian sub-bituminous coal.",
publisher = "Belgrade : Innovation Center of Faculty of Mechanical Engineering",
journal = "International Conference of Experimental and Numerical Investigations and New Technologies",
title = "A review of coal demineralization and desulphurization by chemical leaching",
pages = "99-99"
}

Pantović Spajić, K., Marković, B., Sokić, M., Jovanović, G.,& Stojanović, K.. (2021). A review of coal demineralization and desulphurization by chemical leaching. in International Conference of Experimental and Numerical Investigations and New Technologies
Belgrade : Innovation Center of Faculty of Mechanical Engineering., 99-99.

Pantović Spajić K, Marković B, Sokić M, Jovanović G, Stojanović K. A review of coal demineralization and desulphurization by chemical leaching. in International Conference of Experimental and Numerical Investigations and New Technologies. 2021;:99-99..

Pantović Spajić, Katarina, Marković, Branislav, Sokić, Miroslav, Jovanović, Gvozden, Stojanović, Ksenija, "A review of coal demineralization and desulphurization by chemical leaching" in International Conference of Experimental and Numerical Investigations and New Technologies (2021):99-99.

TY  - CONF
AU  - Pantović Spajić, Katarina
AU  - Marković, Branislav
AU  - Sokić, Miroslav
AU  - Bugarčić, Mladen
AU  - Jovanović, Gvozden
AU  - Manojlović, Vaso
AU  - Stojanović, Ksenija
PY  - 2021
UR  - https://ritnms.itnms.ac.rs/handle/123456789/1122
AB  - All over the world, huge amounts of coal are available and it is utilized in large quantities for different
purposes. The coal combustion causes environmental problems, such as the release of toxic metals
and other pollutants into wastewaters, emission of noxious gases, produce of ash dumps, etc. One of
the solutions for the reduction of environment pollution, caused by coal combustion, is
demineralization and desulphurization of coal. In that sense, treatment of coal by different chemical
reagents becomes important. A subbituminous coal, used in this study was taken from the Bogovina -
East field (Lower Miocene » 20-16 Ma) of the Bogovina Basin, which is located in Eastern Serbia. The
sample was selected based on the previous studies of Bogovina - East field which indicated a high
amount of sulphur, relatively high percent of mineral matter and considerably amount of liptinites
for humic coal, which represent the most reactive maceral group. The aim of the study was an
attempt to reduce the amount of ash and sulphur in coal, keeping the organic matter unaltered as
possible, using simple and cheap method e.g. treatment with hydrochloric acid (HCl). Ash and total
sulphur content was determined before and after HCl leaching. In addition characteristics of initial
and treated coal were tracked by X-ray diffraction (XRD) analysis and Fourier-transform infrared
(FTIR) spectroscopy. The obtained results showed that the high percentage of deashing (» 80 %) was
achieved with cheap hydrochloric acid. XRD analysis of ash before and after sample treatment
provides more information about mineral phases in coal and effects of chemical leaching. FTIR
analysis indicates almost no changes in structure of coal organic matter after treatment by HCl,
which is important for further coal usage (e.g. combustion). On the other hand, the applied chemical
leaching with HCl had low impact on the sulphur content in Bogovina coal (desulphurization
percentage » 8 %). Therefore, in future research other reagents for efficient desulphurization should
be investigated.
PB  - Sisak : Univerzitet u Zagrebu, Metalurški Fakultet
C3  - 19th INTERNATIONAL FOUNDRYMEN CONFERENCE
T1  - "Chemical leaching of subbituminous coal from the Bogovina - East field (Bogovina basin, Serbia) using hydrochloric acid"
EP  - 440
SP  - 435
ER  - 

@conference{
author = "Pantović Spajić, Katarina and Marković, Branislav and Sokić, Miroslav and Bugarčić, Mladen and Jovanović, Gvozden and Manojlović, Vaso and Stojanović, Ksenija",
year = "2021",
abstract = "All over the world, huge amounts of coal are available and it is utilized in large quantities for different
purposes. The coal combustion causes environmental problems, such as the release of toxic metals
and other pollutants into wastewaters, emission of noxious gases, produce of ash dumps, etc. One of
the solutions for the reduction of environment pollution, caused by coal combustion, is
demineralization and desulphurization of coal. In that sense, treatment of coal by different chemical
reagents becomes important. A subbituminous coal, used in this study was taken from the Bogovina -
East field (Lower Miocene » 20-16 Ma) of the Bogovina Basin, which is located in Eastern Serbia. The
sample was selected based on the previous studies of Bogovina - East field which indicated a high
amount of sulphur, relatively high percent of mineral matter and considerably amount of liptinites
for humic coal, which represent the most reactive maceral group. The aim of the study was an
attempt to reduce the amount of ash and sulphur in coal, keeping the organic matter unaltered as
possible, using simple and cheap method e.g. treatment with hydrochloric acid (HCl). Ash and total
sulphur content was determined before and after HCl leaching. In addition characteristics of initial
and treated coal were tracked by X-ray diffraction (XRD) analysis and Fourier-transform infrared
(FTIR) spectroscopy. The obtained results showed that the high percentage of deashing (» 80 %) was
achieved with cheap hydrochloric acid. XRD analysis of ash before and after sample treatment
provides more information about mineral phases in coal and effects of chemical leaching. FTIR
analysis indicates almost no changes in structure of coal organic matter after treatment by HCl,
which is important for further coal usage (e.g. combustion). On the other hand, the applied chemical
leaching with HCl had low impact on the sulphur content in Bogovina coal (desulphurization
percentage » 8 %). Therefore, in future research other reagents for efficient desulphurization should
be investigated.",
publisher = "Sisak : Univerzitet u Zagrebu, Metalurški Fakultet",
journal = "19th INTERNATIONAL FOUNDRYMEN CONFERENCE",
title = ""Chemical leaching of subbituminous coal from the Bogovina - East field (Bogovina basin, Serbia) using hydrochloric acid"",
pages = "440-435"
}

Pantović Spajić, K., Marković, B., Sokić, M., Bugarčić, M., Jovanović, G., Manojlović, V.,& Stojanović, K.. (2021). "Chemical leaching of subbituminous coal from the Bogovina - East field (Bogovina basin, Serbia) using hydrochloric acid". in 19th INTERNATIONAL FOUNDRYMEN CONFERENCE
Sisak : Univerzitet u Zagrebu, Metalurški Fakultet., 435-440.

Pantović Spajić K, Marković B, Sokić M, Bugarčić M, Jovanović G, Manojlović V, Stojanović K. "Chemical leaching of subbituminous coal from the Bogovina - East field (Bogovina basin, Serbia) using hydrochloric acid". in 19th INTERNATIONAL FOUNDRYMEN CONFERENCE. 2021;:435-440..

Pantović Spajić, Katarina, Marković, Branislav, Sokić, Miroslav, Bugarčić, Mladen, Jovanović, Gvozden, Manojlović, Vaso, Stojanović, Ksenija, ""Chemical leaching of subbituminous coal from the Bogovina - East field (Bogovina basin, Serbia) using hydrochloric acid"" in 19th INTERNATIONAL FOUNDRYMEN CONFERENCE (2021):435-440.

TY  - CONF
AU  - Bugarčić, Mladen
AU  - Batinić, Petar
AU  - Pantović Spajić, Katarina
AU  - Sokić, Miroslav
AU  - Marković, Branislav
AU  - Milivojević, Milan
AU  - Marinković, Aleksandar
PY  - 2021
UR  - https://ritnms.itnms.ac.rs/handle/123456789/995
AB  - Adsorbenti na bazi oksida Fe3+ i Cr3+predmet su brojnih istraživanja. Interkalacioni sloj
vermikulita koristan je medijm za taloženje nanočestica. Zbog svoje relativno velike površine,
kapaciteta katjonske izmene i prirodnog obilja vermikulita, ovaj liskunski mineral i njegovi kompoziti
mogu biti valorizovani kao potencijalni adsorbenti. U ovoj studiji kompozit oksida
Fe3+/Cr3+/ekspandirani vermikulit (Fe2O3 / Cr2O3 / EV) pripremljen je metodom in-situ. Kompozitni
i osnovni materijal karakterisan je Furijeovom transformacijom infracrvene spektroskopije (FTIR),
rendgenskom difrakcijom (XRD), skenirajućom elektronskom mikroskopijom (SEM), a određeni su i:
specifična površina BET-om (SBET), kapacitet katjonske izmene (CEC) i pH tačke nultog
naelektrisanja (pHPZC). Adsorpciona svojstva Fe2O3 / Cr2O3 / EV i EV ispitivana su u šaržnom
sistemu na pH blizu pHPZC za uklanjanje Ni (II) iz vode. Uzimajući u obzir parametre procesa kao
što su vreme kontakta, masa adsorbenta i temperatura određeni su tip adsorpcije, termodinamički i
izotermski parametri (Lengmir i Frojndlih) i parametri brzine adsorpcije. Rezultati kinetičkih studija
dali su dobre korelacije sa modelom pseudo - drugog reda i Veber - Morisovim modelom. Uzimajući
u obzir činjenicu da je EV imao niske vrednosti CEC i specifične površine, dobijeni kompozit ima
umerenu adsorpcionu sposobnost (22,9 mg/g).
PB  - Beograd : Akademija tehničkih strukovnih studija
C3  - Šesti naučno-stručni skup Politehnika
T1  - Priprema i karakterizacija mešovitog oksida Fe3+/Cr3+ na ekspandovanom vermikulitu kao sorbenta za jone nikla
EP  - 104
SP  - 99
ER  - 

@conference{
author = "Bugarčić, Mladen and Batinić, Petar and Pantović Spajić, Katarina and Sokić, Miroslav and Marković, Branislav and Milivojević, Milan and Marinković, Aleksandar",
year = "2021",
abstract = "Adsorbenti na bazi oksida Fe3+ i Cr3+predmet su brojnih istraživanja. Interkalacioni sloj
vermikulita koristan je medijm za taloženje nanočestica. Zbog svoje relativno velike površine,
kapaciteta katjonske izmene i prirodnog obilja vermikulita, ovaj liskunski mineral i njegovi kompoziti
mogu biti valorizovani kao potencijalni adsorbenti. U ovoj studiji kompozit oksida
Fe3+/Cr3+/ekspandirani vermikulit (Fe2O3 / Cr2O3 / EV) pripremljen je metodom in-situ. Kompozitni
i osnovni materijal karakterisan je Furijeovom transformacijom infracrvene spektroskopije (FTIR),
rendgenskom difrakcijom (XRD), skenirajućom elektronskom mikroskopijom (SEM), a određeni su i:
specifična površina BET-om (SBET), kapacitet katjonske izmene (CEC) i pH tačke nultog
naelektrisanja (pHPZC). Adsorpciona svojstva Fe2O3 / Cr2O3 / EV i EV ispitivana su u šaržnom
sistemu na pH blizu pHPZC za uklanjanje Ni (II) iz vode. Uzimajući u obzir parametre procesa kao
što su vreme kontakta, masa adsorbenta i temperatura određeni su tip adsorpcije, termodinamički i
izotermski parametri (Lengmir i Frojndlih) i parametri brzine adsorpcije. Rezultati kinetičkih studija
dali su dobre korelacije sa modelom pseudo - drugog reda i Veber - Morisovim modelom. Uzimajući
u obzir činjenicu da je EV imao niske vrednosti CEC i specifične površine, dobijeni kompozit ima
umerenu adsorpcionu sposobnost (22,9 mg/g).",
publisher = "Beograd : Akademija tehničkih strukovnih studija",
journal = "Šesti naučno-stručni skup Politehnika",
title = "Priprema i karakterizacija mešovitog oksida Fe3+/Cr3+ na ekspandovanom vermikulitu kao sorbenta za jone nikla",
pages = "104-99"
}

Bugarčić, M., Batinić, P., Pantović Spajić, K., Sokić, M., Marković, B., Milivojević, M.,& Marinković, A.. (2021). Priprema i karakterizacija mešovitog oksida Fe3+/Cr3+ na ekspandovanom vermikulitu kao sorbenta za jone nikla. in Šesti naučno-stručni skup Politehnika
Beograd : Akademija tehničkih strukovnih studija., 99-104.

Bugarčić M, Batinić P, Pantović Spajić K, Sokić M, Marković B, Milivojević M, Marinković A. Priprema i karakterizacija mešovitog oksida Fe3+/Cr3+ na ekspandovanom vermikulitu kao sorbenta za jone nikla. in Šesti naučno-stručni skup Politehnika. 2021;:99-104..

Bugarčić, Mladen, Batinić, Petar, Pantović Spajić, Katarina, Sokić, Miroslav, Marković, Branislav, Milivojević, Milan, Marinković, Aleksandar, "Priprema i karakterizacija mešovitog oksida Fe3+/Cr3+ na ekspandovanom vermikulitu kao sorbenta za jone nikla" in Šesti naučno-stručni skup Politehnika (2021):99-104.

TY  - JOUR
AU  - Sokić, Miroslav
AU  - Marković, Branislav
AU  - Milojkov, Dušan
AU  - Patarić, Aleksandra
AU  - Bugarčić, Mladen
AU  - Jovanović, Gvozden
AU  - Pantović-Spajić, Katarina
PY  - 2021
UR  - https://ritnms.itnms.ac.rs/handle/123456789/558
AB  - U radu su prikazani i diskutovani rezultati luženja polimetalnog sulfidnog Cu-Zn-Pb koncentrata rastvorom natrijum-nitrata i sumporne kiseline pri atmosferskom pritisku. Prikazan je hemijski i mineraloški sastav polaznog koncentrata i čvrstih ostataka nakon procesa luženja. Hemijske reakcije luženja i mogućnosti njihovog odvijanja analizirane su primenom termodinamičke analize na osnovu izračunatih Gibbsovih energija i analize E-pH dijagrama. Eksperimentalno je analiziran uticaj temperature i vremena na stepen izluženja korisnih metala iz sulfidnog koncentrata. Pokazano je da je moguće dobiti bakar, cink i železo u rastvoru u obliku sulfata, dok olovo u obliku anglesita (PbSO4) ostaje u čvrstom ostatku nakon procesa luženja. Železo se oksidiše u Fe (III) -sulfat, koji učestvuje u luženju sulfidnih minerala i prelazi u Fe (II) -sulfat.
AB  - The results of polymetallic sulphide Cu-Zn-Pb concentrate leaching with sulphuric acid in the presence of sodium nitrate as an oxidizing agent, at atmospheric pressure, are presented and discussed. Chemical composition and phase ratio of the starting concentrate and solid residuals after the leaching process are shown. Chemical reactions of leaching and their thermodynamic probabilities are predicted based on the calculated Gibbs energies and analysis of E-pH diagrams. The influence of temperature and time on the leaching degree of the concentrate's components is experimentally determined. It is shown that it is possible to obtain copper, zinc and iron in a solute form, while lead in the anglesite (PbSO4) form remains in the solid residual after the leaching process. The iron is being oxidized to Fe(III)-sulphate, which takes part in a sulphide leached minerals and turns into Fe(II)-sulphate.
PB  - Savez inženjera i tehničara Srbije, Beograd
T2  - Tehnika
T1  - Luženje polimetalnog Cu-Zn-Pb koncentrata natrijum-nitratom i sumpornom kiselinom
T1  - Leaching of polymetallic Cu-Zn-Pb concentrate with sodium nitrate in sulphuric acid
EP  - 436
IS  - 4
SP  - 426
VL  - 76
DO  - 10.5937/tehnika2104426S
UR  - conv_33
ER  - 

@article{
author = "Sokić, Miroslav and Marković, Branislav and Milojkov, Dušan and Patarić, Aleksandra and Bugarčić, Mladen and Jovanović, Gvozden and Pantović-Spajić, Katarina",
year = "2021",
abstract = "U radu su prikazani i diskutovani rezultati luženja polimetalnog sulfidnog Cu-Zn-Pb koncentrata rastvorom natrijum-nitrata i sumporne kiseline pri atmosferskom pritisku. Prikazan je hemijski i mineraloški sastav polaznog koncentrata i čvrstih ostataka nakon procesa luženja. Hemijske reakcije luženja i mogućnosti njihovog odvijanja analizirane su primenom termodinamičke analize na osnovu izračunatih Gibbsovih energija i analize E-pH dijagrama. Eksperimentalno je analiziran uticaj temperature i vremena na stepen izluženja korisnih metala iz sulfidnog koncentrata. Pokazano je da je moguće dobiti bakar, cink i železo u rastvoru u obliku sulfata, dok olovo u obliku anglesita (PbSO4) ostaje u čvrstom ostatku nakon procesa luženja. Železo se oksidiše u Fe (III) -sulfat, koji učestvuje u luženju sulfidnih minerala i prelazi u Fe (II) -sulfat., The results of polymetallic sulphide Cu-Zn-Pb concentrate leaching with sulphuric acid in the presence of sodium nitrate as an oxidizing agent, at atmospheric pressure, are presented and discussed. Chemical composition and phase ratio of the starting concentrate and solid residuals after the leaching process are shown. Chemical reactions of leaching and their thermodynamic probabilities are predicted based on the calculated Gibbs energies and analysis of E-pH diagrams. The influence of temperature and time on the leaching degree of the concentrate's components is experimentally determined. It is shown that it is possible to obtain copper, zinc and iron in a solute form, while lead in the anglesite (PbSO4) form remains in the solid residual after the leaching process. The iron is being oxidized to Fe(III)-sulphate, which takes part in a sulphide leached minerals and turns into Fe(II)-sulphate.",
publisher = "Savez inženjera i tehničara Srbije, Beograd",
journal = "Tehnika",
title = "Luženje polimetalnog Cu-Zn-Pb koncentrata natrijum-nitratom i sumpornom kiselinom, Leaching of polymetallic Cu-Zn-Pb concentrate with sodium nitrate in sulphuric acid",
pages = "436-426",
number = "4",
volume = "76",
doi = "10.5937/tehnika2104426S",
url = "conv_33"
}

Sokić, M., Marković, B., Milojkov, D., Patarić, A., Bugarčić, M., Jovanović, G.,& Pantović-Spajić, K.. (2021). Luženje polimetalnog Cu-Zn-Pb koncentrata natrijum-nitratom i sumpornom kiselinom. in Tehnika
Savez inženjera i tehničara Srbije, Beograd., 76(4), 426-436.
https://doi.org/10.5937/tehnika2104426S
conv_33

Sokić M, Marković B, Milojkov D, Patarić A, Bugarčić M, Jovanović G, Pantović-Spajić K. Luženje polimetalnog Cu-Zn-Pb koncentrata natrijum-nitratom i sumpornom kiselinom. in Tehnika. 2021;76(4):426-436.
doi:10.5937/tehnika2104426S
conv_33 .

Sokić, Miroslav, Marković, Branislav, Milojkov, Dušan, Patarić, Aleksandra, Bugarčić, Mladen, Jovanović, Gvozden, Pantović-Spajić, Katarina, "Luženje polimetalnog Cu-Zn-Pb koncentrata natrijum-nitratom i sumpornom kiselinom" in Tehnika, 76, no. 4 (2021):426-436,
https://doi.org/10.5937/tehnika2104426S .,
conv_33 .

TY  - JOUR
AU  - Pantović-Spajić, Katarina
AU  - Marković, Branislav
AU  - Pavlović, Miroslav M.
AU  - Sokić, Miroslav
AU  - Zildžović, Snežana
AU  - Đorđević, Nataša
AU  - Stojanović, Ksenija
PY  - 2021
UR  - https://ritnms.itnms.ac.rs/handle/123456789/575
AB  - The study is focused on the determination of the most effective chemical leaching process for the simultaneous demineralization/deashing and desulfurization of subbituminous coal from the Bogovina Basin. Coal was treated for 30 min, at different temperatures, using variable concentrations of hydrochloric, nitric, acetic and citric acids; hydrogen peroxide, mixture of hydrogen peroxide and nitric acid (pH 2), as well as by the stepwise leaching process (nitric acid + mixture of hydrogen peroxide and nitric acid, pH 2). The changes in mineral composition, caused by the chemical leaching, are followed using X-ray diffraction, whereas alterations of coal organic matter are tracked by Fourier-transform infrared spectroscopy and the content of fixed carbon. Inorganic acid leaching, regardless of the temperature and acid concentration, enabled the successful deashing of coal, whereas the percent of desulfurization was insufficient. The organic acid leaching was not satisfactory for both, deashing and desulfurization. Leaching by H2O2 and H2O2/HNO3 mixture (pH 2) resulted in moderate desulfurization, but the ash reduction was low. The most suitable method for the simultaneous effective ash (78 wt.%) and the sulfur (66 wt. %) removal from Bogovina coal is the two-step leaching, combining 10 vol. % HNO3 and mixture of 35 vol. % H2O2/10 vol. % HNO3 of pH 2 at 60 degrees C.
PB  - Srpsko hemijsko društvo, Beograd
T2  - Journal of the Serbian Chemical Society
T1  - Deashing and desulfurization of subbituminous coal from the East field (Bogovina Basin, Serbia) - Insights from chemical leaching
EP  - 1126
IS  - 11
SP  - 1113
VL  - 86
DO  - 10.2298/JSC210719061P
UR  - conv_924
ER  - 

@article{
author = "Pantović-Spajić, Katarina and Marković, Branislav and Pavlović, Miroslav M. and Sokić, Miroslav and Zildžović, Snežana and Đorđević, Nataša and Stojanović, Ksenija",
year = "2021",
abstract = "The study is focused on the determination of the most effective chemical leaching process for the simultaneous demineralization/deashing and desulfurization of subbituminous coal from the Bogovina Basin. Coal was treated for 30 min, at different temperatures, using variable concentrations of hydrochloric, nitric, acetic and citric acids; hydrogen peroxide, mixture of hydrogen peroxide and nitric acid (pH 2), as well as by the stepwise leaching process (nitric acid + mixture of hydrogen peroxide and nitric acid, pH 2). The changes in mineral composition, caused by the chemical leaching, are followed using X-ray diffraction, whereas alterations of coal organic matter are tracked by Fourier-transform infrared spectroscopy and the content of fixed carbon. Inorganic acid leaching, regardless of the temperature and acid concentration, enabled the successful deashing of coal, whereas the percent of desulfurization was insufficient. The organic acid leaching was not satisfactory for both, deashing and desulfurization. Leaching by H2O2 and H2O2/HNO3 mixture (pH 2) resulted in moderate desulfurization, but the ash reduction was low. The most suitable method for the simultaneous effective ash (78 wt.%) and the sulfur (66 wt. %) removal from Bogovina coal is the two-step leaching, combining 10 vol. % HNO3 and mixture of 35 vol. % H2O2/10 vol. % HNO3 of pH 2 at 60 degrees C.",
publisher = "Srpsko hemijsko društvo, Beograd",
journal = "Journal of the Serbian Chemical Society",
title = "Deashing and desulfurization of subbituminous coal from the East field (Bogovina Basin, Serbia) - Insights from chemical leaching",
pages = "1126-1113",
number = "11",
volume = "86",
doi = "10.2298/JSC210719061P",
url = "conv_924"
}

Pantović-Spajić, K., Marković, B., Pavlović, M. M., Sokić, M., Zildžović, S., Đorđević, N.,& Stojanović, K.. (2021). Deashing and desulfurization of subbituminous coal from the East field (Bogovina Basin, Serbia) - Insights from chemical leaching. in Journal of the Serbian Chemical Society
Srpsko hemijsko društvo, Beograd., 86(11), 1113-1126.
https://doi.org/10.2298/JSC210719061P
conv_924

Pantović-Spajić K, Marković B, Pavlović MM, Sokić M, Zildžović S, Đorđević N, Stojanović K. Deashing and desulfurization of subbituminous coal from the East field (Bogovina Basin, Serbia) - Insights from chemical leaching. in Journal of the Serbian Chemical Society. 2021;86(11):1113-1126.
doi:10.2298/JSC210719061P
conv_924 .

Pantović-Spajić, Katarina, Marković, Branislav, Pavlović, Miroslav M., Sokić, Miroslav, Zildžović, Snežana, Đorđević, Nataša, Stojanović, Ksenija, "Deashing and desulfurization of subbituminous coal from the East field (Bogovina Basin, Serbia) - Insights from chemical leaching" in Journal of the Serbian Chemical Society, 86, no. 11 (2021):1113-1126,
https://doi.org/10.2298/JSC210719061P .,
conv_924 .

TY  - CONF
AU  - Šoštarić, Tatjana
AU  - Petrović, Marija
AU  - Lopičić, Zorica
AU  - Petrović, Jelena
AU  - Kojić, Marija
AU  - Koprivica, Marija
AU  - Pantović Spajić, Katarina
PY  - 2019
UR  - https://ritnms.itnms.ac.rs/handle/123456789/1141
AB  - The apricot stones (KK) were investigated as biosorbent of copper ions from aqueous
solution. The rigidity of lignocellulosic compact molecular arrangement, induce the necessity of its
modification. The aim of this paper was to establish optimal parameters of KK modification in order
to improve low-cost biosorbent with improved biosorption characteristics. The modification
parameters were: initial NaOH concentration, contact time and biomass/base solution ratio. After
sets of experiments, the optimal modification parameters for copper removal were found to be:
initial concentration of modification agent 1.0 mol/L NaOH, solid/liquid ratio 1:20 and 180 minute
of contact time.
The results show that modified apricot shells doubled the binding affinity toward copper ions, and
could be used as an efficient low-cost biosorbent, promoting more sustainable production and to
stop waste disposal at landfill sites.
PB  - Bor : Univerzitet u Beogradu, Tehnički fakultet
C3  - XIII International Mineral Processing and Recycling Conference
T1  - Apricot shells biosorbent for Cu(II) ions: determination of optimal alkaline treatment conditions
EP  - 574
SP  - 568
ER  - 

@conference{
author = "Šoštarić, Tatjana and Petrović, Marija and Lopičić, Zorica and Petrović, Jelena and Kojić, Marija and Koprivica, Marija and Pantović Spajić, Katarina",
year = "2019",
abstract = "The apricot stones (KK) were investigated as biosorbent of copper ions from aqueous
solution. The rigidity of lignocellulosic compact molecular arrangement, induce the necessity of its
modification. The aim of this paper was to establish optimal parameters of KK modification in order
to improve low-cost biosorbent with improved biosorption characteristics. The modification
parameters were: initial NaOH concentration, contact time and biomass/base solution ratio. After
sets of experiments, the optimal modification parameters for copper removal were found to be:
initial concentration of modification agent 1.0 mol/L NaOH, solid/liquid ratio 1:20 and 180 minute
of contact time.
The results show that modified apricot shells doubled the binding affinity toward copper ions, and
could be used as an efficient low-cost biosorbent, promoting more sustainable production and to
stop waste disposal at landfill sites.",
publisher = "Bor : Univerzitet u Beogradu, Tehnički fakultet",
journal = "XIII International Mineral Processing and Recycling Conference",
title = "Apricot shells biosorbent for Cu(II) ions: determination of optimal alkaline treatment conditions",
pages = "574-568"
}

Šoštarić, T., Petrović, M., Lopičić, Z., Petrović, J., Kojić, M., Koprivica, M.,& Pantović Spajić, K.. (2019). Apricot shells biosorbent for Cu(II) ions: determination of optimal alkaline treatment conditions. in XIII International Mineral Processing and Recycling Conference
Bor : Univerzitet u Beogradu, Tehnički fakultet., 568-574.

Šoštarić T, Petrović M, Lopičić Z, Petrović J, Kojić M, Koprivica M, Pantović Spajić K. Apricot shells biosorbent for Cu(II) ions: determination of optimal alkaline treatment conditions. in XIII International Mineral Processing and Recycling Conference. 2019;:568-574..

Šoštarić, Tatjana, Petrović, Marija, Lopičić, Zorica, Petrović, Jelena, Kojić, Marija, Koprivica, Marija, Pantović Spajić, Katarina, "Apricot shells biosorbent for Cu(II) ions: determination of optimal alkaline treatment conditions" in XIII International Mineral Processing and Recycling Conference (2019):568-574.

TY  - JOUR
AU  - Lopičić, Zorica
AU  - Šoštarić, Tatjana
AU  - Ahmad, Hosseini-Bandegharaei
AU  - Milojković, Jelena
AU  - Petrović, Marija
AU  - Pantović-Spajić, Katarina
AU  - Avdalović, Jelena
PY  - 2019
UR  - https://ritnms.itnms.ac.rs/handle/123456789/522
AB  - This paper focuses on lignocellulosic waste biomass originating from food industry, which should find its further application in order to fulfill demands of circular economy. Therefore, here are presented some of the chemical and physical properties that affect combustion process, as well as thermochemical reaction kinetics for lignocellulosic biomass wastes. The biomass investigated was peach stone particles originating from food industry. The results have showed that peach stones can be characterized as good energy alternative renewable material, with properties that allow its safe thermochemical conversion. Kinetic analysis of this biomass was performed using Thermogravimetric Analysis (TGA) with a simple reaction model applied, namely n-th order reaction model. The obtained results have confirmed the complex nature of this material and the need for further modelling.
PB  - University of East Sarajevo, Faculty of Technology
T2  - Journal of Engineering & Processing Management
T1  - The Investigation of Characteristics and Thermal Behaviour of Lignocellulosic Waste Biomass Using Thermogravimetric Analysis
EP  - 23
IS  - 1
SP  - 18
VL  - 11
DO  - 10.7251/JEPM1901018L
UR  - conv_1202
ER  - 

@article{
author = "Lopičić, Zorica and Šoštarić, Tatjana and Ahmad, Hosseini-Bandegharaei and Milojković, Jelena and Petrović, Marija and Pantović-Spajić, Katarina and Avdalović, Jelena",
year = "2019",
abstract = "This paper focuses on lignocellulosic waste biomass originating from food industry, which should find its further application in order to fulfill demands of circular economy. Therefore, here are presented some of the chemical and physical properties that affect combustion process, as well as thermochemical reaction kinetics for lignocellulosic biomass wastes. The biomass investigated was peach stone particles originating from food industry. The results have showed that peach stones can be characterized as good energy alternative renewable material, with properties that allow its safe thermochemical conversion. Kinetic analysis of this biomass was performed using Thermogravimetric Analysis (TGA) with a simple reaction model applied, namely n-th order reaction model. The obtained results have confirmed the complex nature of this material and the need for further modelling.",
publisher = "University of East Sarajevo, Faculty of Technology",
journal = "Journal of Engineering & Processing Management",
title = "The Investigation of Characteristics and Thermal Behaviour of Lignocellulosic Waste Biomass Using Thermogravimetric Analysis",
pages = "23-18",
number = "1",
volume = "11",
doi = "10.7251/JEPM1901018L",
url = "conv_1202"
}

Lopičić, Z., Šoštarić, T., Ahmad, H., Milojković, J., Petrović, M., Pantović-Spajić, K.,& Avdalović, J.. (2019). The Investigation of Characteristics and Thermal Behaviour of Lignocellulosic Waste Biomass Using Thermogravimetric Analysis. in Journal of Engineering & Processing Management
University of East Sarajevo, Faculty of Technology., 11(1), 18-23.
https://doi.org/10.7251/JEPM1901018L
conv_1202

Lopičić Z, Šoštarić T, Ahmad H, Milojković J, Petrović M, Pantović-Spajić K, Avdalović J. The Investigation of Characteristics and Thermal Behaviour of Lignocellulosic Waste Biomass Using Thermogravimetric Analysis. in Journal of Engineering & Processing Management. 2019;11(1):18-23.
doi:10.7251/JEPM1901018L
conv_1202 .

Lopičić, Zorica, Šoštarić, Tatjana, Ahmad, Hosseini-Bandegharaei, Milojković, Jelena, Petrović, Marija, Pantović-Spajić, Katarina, Avdalović, Jelena, "The Investigation of Characteristics and Thermal Behaviour of Lignocellulosic Waste Biomass Using Thermogravimetric Analysis" in Journal of Engineering & Processing Management, 11, no. 1 (2019):18-23,
https://doi.org/10.7251/JEPM1901018L .,
conv_1202 .

TY  - CONF
AU  - Šoštarić, Tatjana
AU  - Petrović, Marija
AU  - Milojković, Jelena
AU  - Kojić, Marija
AU  - Koprivica, Marija
AU  - Pantović Spajić, Katarina
AU  - Lopičić, Zorica
PY  - 2019
UR  - https://ritnms.itnms.ac.rs/handle/123456789/1123
AB  - Biosorption is a branch of biotechnology emerged in order to provide low cost wastewater treatment and to minimize waste disposal at the same time. It is based on ability of biological materials to bind and to concentrate various pollutants from the aqueous solutions. Main advantages of biosorption process are efficiency, simplicity and availability of biomass. As bio-adsorbents many materials with biological origin have been investigated and their biosorption capacities have been reported in numerous research papers. Although the biosorption is often presented as a promising clean up technology for more than two decades, unfortunately most of the biosorption processes are still at laboratory scale. This paper investigates the reasons of lack of practical application and commercial success of biosorbents.
PB  - Beograd : Savez inženjera i tehničara Srbije
C3  - 40. Međunarodna konferencija Vodovod i kanalizacija ’19
T1  - Applicability of biosorption technology in real systems
EP  - 135
SP  - 130
ER  - 

@conference{
author = "Šoštarić, Tatjana and Petrović, Marija and Milojković, Jelena and Kojić, Marija and Koprivica, Marija and Pantović Spajić, Katarina and Lopičić, Zorica",
year = "2019",
abstract = "Biosorption is a branch of biotechnology emerged in order to provide low cost wastewater treatment and to minimize waste disposal at the same time. It is based on ability of biological materials to bind and to concentrate various pollutants from the aqueous solutions. Main advantages of biosorption process are efficiency, simplicity and availability of biomass. As bio-adsorbents many materials with biological origin have been investigated and their biosorption capacities have been reported in numerous research papers. Although the biosorption is often presented as a promising clean up technology for more than two decades, unfortunately most of the biosorption processes are still at laboratory scale. This paper investigates the reasons of lack of practical application and commercial success of biosorbents.",
publisher = "Beograd : Savez inženjera i tehničara Srbije",
journal = "40. Međunarodna konferencija Vodovod i kanalizacija ’19",
title = "Applicability of biosorption technology in real systems",
pages = "135-130"
}

Šoštarić, T., Petrović, M., Milojković, J., Kojić, M., Koprivica, M., Pantović Spajić, K.,& Lopičić, Z.. (2019). Applicability of biosorption technology in real systems. in 40. Međunarodna konferencija Vodovod i kanalizacija ’19
Beograd : Savez inženjera i tehničara Srbije., 130-135.

Šoštarić T, Petrović M, Milojković J, Kojić M, Koprivica M, Pantović Spajić K, Lopičić Z. Applicability of biosorption technology in real systems. in 40. Međunarodna konferencija Vodovod i kanalizacija ’19. 2019;:130-135..

Šoštarić, Tatjana, Petrović, Marija, Milojković, Jelena, Kojić, Marija, Koprivica, Marija, Pantović Spajić, Katarina, Lopičić, Zorica, "Applicability of biosorption technology in real systems" in 40. Međunarodna konferencija Vodovod i kanalizacija ’19 (2019):130-135.

TY  - CONF
AU  - Šoštarić, Tatjana
AU  - Lopičić, Zorica
AU  - Kojić, Marija
AU  - Koprivica, Marija
AU  - Pantović Spajić, Katarina
AU  - Ranđelović, Dragana
AU  - Stanković, Srđan
PY  - 2019
UR  - https://ritnms.itnms.ac.rs/handle/123456789/1121
AB  - Manganese occurs naturally in surface and groundwater due to mineral dissolution
and leaching process, but also as a result of human activities such as manganese
ore mining and processing, different alloys and salts production. It is also used as a gasoline
additive, a component in ceramic/glass manufacturing, some agrochemicals (fungicides and
fertilizers). Manganese is an essential element for the functioning of many enzymes and can
serve as an activator of many others, but manganese is not biodegradable, and its bioaccumulation
in living organisms can cause many diseases and disorders. In the present study,
the biosorption efficiency for the manganese ions from synthetic solution by raw and modified
apricot and peach shells has been investigated. These lignocellulosic materials were
obtained from local juice factory, where they have been discharged as the waste. Removal
of manganese ions was investigated using the following biosorbents: raw apricot shells (KK)
(particle size <0.65 mm), modified KK with mixture of 2% alginate and bentonite (KKAlB),
raw peach shells (particle size <100 μm) modified by: 2% alginate (KBAl), 2 mol/L HNO3
(KBM) and with the mixture of 10% FeCl3×6H2O and 0.1 mol/L KOH (KBFe). Experimental
biosorption parameters were: initial concentration of manganese ions: 35 mg/L; m/V ratio: 5
g/L; contact time: 24h and initial pH value of the solutions: 4.5. The results have shown that
KK is the most suitable and cost-effective biosorbent for the removal of manganese ions
from aqueous solution. As apricot shells are widely available in the Republic of Serbia as
food industry waste, application of this biosorbent can help in minimizing waste disposal and
in water treatment at the same time.
PB  - Belgrade : Association of Metallurgical Engineers of Serbia
C3  - 4th Metallurgical & Materials Engineering Congress of South-East Europe 2019
T1  - Removal of Mn(II) ions from synthetic solution using adsorbents based on apricot and peach shells
EP  - 79
SP  - 79
ER  - 

@conference{
author = "Šoštarić, Tatjana and Lopičić, Zorica and Kojić, Marija and Koprivica, Marija and Pantović Spajić, Katarina and Ranđelović, Dragana and Stanković, Srđan",
year = "2019",
abstract = "Manganese occurs naturally in surface and groundwater due to mineral dissolution
and leaching process, but also as a result of human activities such as manganese
ore mining and processing, different alloys and salts production. It is also used as a gasoline
additive, a component in ceramic/glass manufacturing, some agrochemicals (fungicides and
fertilizers). Manganese is an essential element for the functioning of many enzymes and can
serve as an activator of many others, but manganese is not biodegradable, and its bioaccumulation
in living organisms can cause many diseases and disorders. In the present study,
the biosorption efficiency for the manganese ions from synthetic solution by raw and modified
apricot and peach shells has been investigated. These lignocellulosic materials were
obtained from local juice factory, where they have been discharged as the waste. Removal
of manganese ions was investigated using the following biosorbents: raw apricot shells (KK)
(particle size <0.65 mm), modified KK with mixture of 2% alginate and bentonite (KKAlB),
raw peach shells (particle size <100 μm) modified by: 2% alginate (KBAl), 2 mol/L HNO3
(KBM) and with the mixture of 10% FeCl3×6H2O and 0.1 mol/L KOH (KBFe). Experimental
biosorption parameters were: initial concentration of manganese ions: 35 mg/L; m/V ratio: 5
g/L; contact time: 24h and initial pH value of the solutions: 4.5. The results have shown that
KK is the most suitable and cost-effective biosorbent for the removal of manganese ions
from aqueous solution. As apricot shells are widely available in the Republic of Serbia as
food industry waste, application of this biosorbent can help in minimizing waste disposal and
in water treatment at the same time.",
publisher = "Belgrade : Association of Metallurgical Engineers of Serbia",
journal = "4th Metallurgical & Materials Engineering Congress of South-East Europe 2019",
title = "Removal of Mn(II) ions from synthetic solution using adsorbents based on apricot and peach shells",
pages = "79-79"
}

Šoštarić, T., Lopičić, Z., Kojić, M., Koprivica, M., Pantović Spajić, K., Ranđelović, D.,& Stanković, S.. (2019). Removal of Mn(II) ions from synthetic solution using adsorbents based on apricot and peach shells. in 4th Metallurgical & Materials Engineering Congress of South-East Europe 2019
Belgrade : Association of Metallurgical Engineers of Serbia., 79-79.

Šoštarić T, Lopičić Z, Kojić M, Koprivica M, Pantović Spajić K, Ranđelović D, Stanković S. Removal of Mn(II) ions from synthetic solution using adsorbents based on apricot and peach shells. in 4th Metallurgical & Materials Engineering Congress of South-East Europe 2019. 2019;:79-79..

Šoštarić, Tatjana, Lopičić, Zorica, Kojić, Marija, Koprivica, Marija, Pantović Spajić, Katarina, Ranđelović, Dragana, Stanković, Srđan, "Removal of Mn(II) ions from synthetic solution using adsorbents based on apricot and peach shells" in 4th Metallurgical & Materials Engineering Congress of South-East Europe 2019 (2019):79-79.

TY  - CONF
AU  - Pavlović, Miroslav
AU  - Pantović Spajić, Marijana
AU  - Bartl, Pavel
AU  - Stevanović, Jasmina
AU  - Pantović, Radoje
AU  - Pantović Spajić, Katarina
AU  - Radak, Bojan
PY  - 2019
UR  - https://ritnms.itnms.ac.rs/handle/123456789/1139
AB  - Flow meters are essential part of equipment in almost all chemical and process industries. Knowledge of
the flow dynamics and flow of material through the reactor system is required to evaluate the performance of the
reactors, processes, operation and design. Traditionally this evaluation can be performed using chemical tracers.
Chemical tracer results are not always precise and they could not allow an online diagnosis. The samples
containing chemical tracer have to go to a lab for analysis and chemical tracers are less sensitive than radioactive
ones. Radioactive tracers are the only tracers capable of measuring the active residence time distribution (RTD)
with high degree of precision and give information on-line without stopping the process. In this work the application
of radiotracer method for RTD measurement in flow meter calibration is described. The RTD measurements of the
system were performed in pilot-scale perfect mixer in series reactor for flow meter calibration with Technetium-
99 m (99mTc) as a radiotracer in the form of pertechnetate ion (99mTcO4
-). The optimization of the parameters
included input signal of radiotracer, concentration of radiotracer and position of detectors. The measured data
were analyzed, and standard and relative deviations were quantified under different operating conditions. A plug
flow model was used to simulate the measured RTD curves and investigate the flow dynamics of the flowing water.
The results of the study showed that the optimum concentration of 99mTc for flow meter calibration was 0.3 ml
having activity 0.68 mCi. The standard deviation was σ=0.10 l min-1 and the relative deviation was 0.94%. The
results of the study can help in the operation and design of the existing systems and design of new ones.
PB  - Belgrade : University of Belgrade, Faculty of Mining and Geology
C3  - 7th International Symposium Mining and Environmental Protection, International Conference, Proceedings
T1  - Technetium-99m as a Tracer for the Liquid Residence Time Distribution Measurement: Optimization of Different Radiotracer Parameters for Flow Meter Calibration
EP  - 173
SP  - 166
ER  - 

@conference{
author = "Pavlović, Miroslav and Pantović Spajić, Marijana and Bartl, Pavel and Stevanović, Jasmina and Pantović, Radoje and Pantović Spajić, Katarina and Radak, Bojan",
year = "2019",
abstract = "Flow meters are essential part of equipment in almost all chemical and process industries. Knowledge of
the flow dynamics and flow of material through the reactor system is required to evaluate the performance of the
reactors, processes, operation and design. Traditionally this evaluation can be performed using chemical tracers.
Chemical tracer results are not always precise and they could not allow an online diagnosis. The samples
containing chemical tracer have to go to a lab for analysis and chemical tracers are less sensitive than radioactive
ones. Radioactive tracers are the only tracers capable of measuring the active residence time distribution (RTD)
with high degree of precision and give information on-line without stopping the process. In this work the application
of radiotracer method for RTD measurement in flow meter calibration is described. The RTD measurements of the
system were performed in pilot-scale perfect mixer in series reactor for flow meter calibration with Technetium-
99 m (99mTc) as a radiotracer in the form of pertechnetate ion (99mTcO4
-). The optimization of the parameters
included input signal of radiotracer, concentration of radiotracer and position of detectors. The measured data
were analyzed, and standard and relative deviations were quantified under different operating conditions. A plug
flow model was used to simulate the measured RTD curves and investigate the flow dynamics of the flowing water.
The results of the study showed that the optimum concentration of 99mTc for flow meter calibration was 0.3 ml
having activity 0.68 mCi. The standard deviation was σ=0.10 l min-1 and the relative deviation was 0.94%. The
results of the study can help in the operation and design of the existing systems and design of new ones.",
publisher = "Belgrade : University of Belgrade, Faculty of Mining and Geology",
journal = "7th International Symposium Mining and Environmental Protection, International Conference, Proceedings",
title = "Technetium-99m as a Tracer for the Liquid Residence Time Distribution Measurement: Optimization of Different Radiotracer Parameters for Flow Meter Calibration",
pages = "173-166"
}

Pavlović, M., Pantović Spajić, M., Bartl, P., Stevanović, J., Pantović, R., Pantović Spajić, K.,& Radak, B.. (2019). Technetium-99m as a Tracer for the Liquid Residence Time Distribution Measurement: Optimization of Different Radiotracer Parameters for Flow Meter Calibration. in 7th International Symposium Mining and Environmental Protection, International Conference, Proceedings
Belgrade : University of Belgrade, Faculty of Mining and Geology., 166-173.

Pavlović M, Pantović Spajić M, Bartl P, Stevanović J, Pantović R, Pantović Spajić K, Radak B. Technetium-99m as a Tracer for the Liquid Residence Time Distribution Measurement: Optimization of Different Radiotracer Parameters for Flow Meter Calibration. in 7th International Symposium Mining and Environmental Protection, International Conference, Proceedings. 2019;:166-173..

Pavlović, Miroslav, Pantović Spajić, Marijana, Bartl, Pavel, Stevanović, Jasmina, Pantović, Radoje, Pantović Spajić, Katarina, Radak, Bojan, "Technetium-99m as a Tracer for the Liquid Residence Time Distribution Measurement: Optimization of Different Radiotracer Parameters for Flow Meter Calibration" in 7th International Symposium Mining and Environmental Protection, International Conference, Proceedings (2019):166-173.

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  - 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  - 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  - CONF
AU  - Pantović Pavlović, Marijana
AU  - Eraković, Sanja
AU  - Pavlović, Miroslav
AU  - Pantović Spajić, Katarina
AU  - Panić, Vladimir
AU  - Pavlović, Miomir
PY  - 2017
UR  - https://ritnms.itnms.ac.rs/handle/123456789/1140
AB  - Hydroxyapatite (HAp) is the most suitable biocompatible material for bone implant coatings.
However, its brittleness is a major obstacle, and that is why, recently, research focused on creating composites.
In this study, a novel in situ synthesis of HAp coating on titanium was presented. HAp was anaphoretically
deposited from alkaline-ethanol suspension in one step process. Morphology of the coating was investigated by
optical microscopy, while deposited HAp was characterized using ATR-FTIR. It was concluded that HAp has
excellent coverage of the surface without delamination. The obtained coating can be good material for bone
implants due to solving HAp brittleness.
PB  - Bor : University of Belgrade, Technical Faculty in Bor
C3  - "ECOLOGICAL TRUTH" ECO-IST'17
T1  - In Situ Synthesis of Biocompatible Composite Layer of Hydroxyapatite/Passive Oxide Surfaces on the Modified Titanium
EP  - 306
SP  - 301
ER  - 

@conference{
author = "Pantović Pavlović, Marijana and Eraković, Sanja and Pavlović, Miroslav and Pantović Spajić, Katarina and Panić, Vladimir and Pavlović, Miomir",
year = "2017",
abstract = "Hydroxyapatite (HAp) is the most suitable biocompatible material for bone implant coatings.
However, its brittleness is a major obstacle, and that is why, recently, research focused on creating composites.
In this study, a novel in situ synthesis of HAp coating on titanium was presented. HAp was anaphoretically
deposited from alkaline-ethanol suspension in one step process. Morphology of the coating was investigated by
optical microscopy, while deposited HAp was characterized using ATR-FTIR. It was concluded that HAp has
excellent coverage of the surface without delamination. The obtained coating can be good material for bone
implants due to solving HAp brittleness.",
publisher = "Bor : University of Belgrade, Technical Faculty in Bor",
journal = ""ECOLOGICAL TRUTH" ECO-IST'17",
title = "In Situ Synthesis of Biocompatible Composite Layer of Hydroxyapatite/Passive Oxide Surfaces on the Modified Titanium",
pages = "306-301"
}

Pantović Pavlović, M., Eraković, S., Pavlović, M., Pantović Spajić, K., Panić, V.,& Pavlović, M.. (2017). In Situ Synthesis of Biocompatible Composite Layer of Hydroxyapatite/Passive Oxide Surfaces on the Modified Titanium. in "ECOLOGICAL TRUTH" ECO-IST'17
Bor : University of Belgrade, Technical Faculty in Bor., 301-306.

Pantović Pavlović M, Eraković S, Pavlović M, Pantović Spajić K, Panić V, Pavlović M. In Situ Synthesis of Biocompatible Composite Layer of Hydroxyapatite/Passive Oxide Surfaces on the Modified Titanium. in "ECOLOGICAL TRUTH" ECO-IST'17. 2017;:301-306..

Pantović Pavlović, Marijana, Eraković, Sanja, Pavlović, Miroslav, Pantović Spajić, Katarina, Panić, Vladimir, Pavlović, Miomir, "In Situ Synthesis of Biocompatible Composite Layer of Hydroxyapatite/Passive Oxide Surfaces on the Modified Titanium" in "ECOLOGICAL TRUTH" ECO-IST'17 (2017):301-306.

TY  - CONF
AU  - Dimitrijević, Silvana
AU  - Ivanović, Aleksandra
AU  - Magdalinović, Srđana
AU  - Ivanović, Saša
AU  - Krstić, Slađana
AU  - Trumić, Biserka
AU  - Dragulović, Suzana
AU  - Pantović, Katarina
PY  - 2016
UR  - https://ritnms.itnms.ac.rs/handle/123456789/1212
AB  - The aim of this study was the recycling of platinum from crucibles for melting and casting. This paper has considered the possibility of direct melting of crucibles as well as the possibility of processing the crucibles by PMS methods (shaking table and flotation concentration). Laboratory studies have shown that leaching of ground crucibles in sulfuric acid has achieved the leaching degree of magnesium oxide of 99.98% thus providing a material suitable for melting.
PB  - Bor : University of Belgrade, Technical Faculty in Bor
C3  - XXIV International Conference "ECOLOGICAL TRUTH" Eco-Ist'16
T1  - Recycling of platinum from crucibles for melting and casting
EP  - 333
SP  - 327
ER  - 

@conference{
author = "Dimitrijević, Silvana and Ivanović, Aleksandra and Magdalinović, Srđana and Ivanović, Saša and Krstić, Slađana and Trumić, Biserka and Dragulović, Suzana and Pantović, Katarina",
year = "2016",
abstract = "The aim of this study was the recycling of platinum from crucibles for melting and casting. This paper has considered the possibility of direct melting of crucibles as well as the possibility of processing the crucibles by PMS methods (shaking table and flotation concentration). Laboratory studies have shown that leaching of ground crucibles in sulfuric acid has achieved the leaching degree of magnesium oxide of 99.98% thus providing a material suitable for melting.",
publisher = "Bor : University of Belgrade, Technical Faculty in Bor",
journal = "XXIV International Conference "ECOLOGICAL TRUTH" Eco-Ist'16",
title = "Recycling of platinum from crucibles for melting and casting",
pages = "333-327"
}

Dimitrijević, S., Ivanović, A., Magdalinović, S., Ivanović, S., Krstić, S., Trumić, B., Dragulović, S.,& Pantović, K.. (2016). Recycling of platinum from crucibles for melting and casting. in XXIV International Conference "ECOLOGICAL TRUTH" Eco-Ist'16
Bor : University of Belgrade, Technical Faculty in Bor., 327-333.

Dimitrijević S, Ivanović A, Magdalinović S, Ivanović S, Krstić S, Trumić B, Dragulović S, Pantović K. Recycling of platinum from crucibles for melting and casting. in XXIV International Conference "ECOLOGICAL TRUTH" Eco-Ist'16. 2016;:327-333..

Dimitrijević, Silvana, Ivanović, Aleksandra, Magdalinović, Srđana, Ivanović, Saša, Krstić, Slađana, Trumić, Biserka, Dragulović, Suzana, Pantović, Katarina, "Recycling of platinum from crucibles for melting and casting" in XXIV International Conference "ECOLOGICAL TRUTH" Eco-Ist'16 (2016):327-333.

TY  - CONF
AU  - Pantović, Radoje
AU  - Pantović, Marijana
AU  - Pantović, Katarina
AU  - Pavlović, Miroslav
PY  - 2016
UR  - https://ritnms.itnms.ac.rs/handle/123456789/1118
AB  - Study of monitoring and analyzing the deformation of the collector Krivelj River. has been developed. In the period May - July 2009, the recording of the measurements and the state of the crack deformation in reinforced concrete collectors lining was performed. 
Based on analysis of the recording, four characteristic lining deformation of the shape in vulnerable parts of the collector were identified: in calotte, on the sides of calotte, sides themselves, and sides of ducts. 
Deformations in calotte zone were in form of tension cracks, reinforcement tears and separation of concrete from the reinforcement created due to high tensile stresses in the inner part of the reinforced concrete lining. The worst damage was observed due to shear stresses in the lateral parts of the calotte, while the cracks in some parts exceeded 10 cm. These are very large and dangerous damages to the collector. Given that there was a fracture of concrete, loads in those areas was taken over by the armature, which was affected by severe corrosion. Due to the large vertical pressures and the tendency for flattening of the collector in internal lateral parts of support, there was erosion of concrete in the form of plates. Small cracks appeared in the side parts of the collector ducts, too. 
For collector cross sections recording, in addition to the geodetic procedure, rotating laser beam procedure was applied. Based on these recordings it can be concluded that the profile of the collector, on his damaged sections, is ""flattened"". The laser process enables easier, faster and more credible measurements of the size and shape of the profile, which may be of particular importance when installing frameworks for future temporary and permanent rehabilitation of vulnerable sections of the collector. 
Changes in the deformation of the ten selected places in collectors were observed using embedded devices for measuring deformation cracks in collector reinforced concrete support. Final results of monitoring changes in absolute and relative deformation of reinforced concrete collector of over time show that established shifts arc part of the process of reinforced concrete roof supports deformation, which is directed towards the fracture and support breaking.
PB  - Society of Chemists and Technologists of Macedonia
C3  - 24th Congress of Chemists and Technologists of Macedonia, International Conference
T1  - Monitoring of Krivelj river collector deformation
EP  - 161
SP  - 161
ER  - 

@conference{
author = "Pantović, Radoje and Pantović, Marijana and Pantović, Katarina and Pavlović, Miroslav",
year = "2016",
abstract = "Study of monitoring and analyzing the deformation of the collector Krivelj River. has been developed. In the period May - July 2009, the recording of the measurements and the state of the crack deformation in reinforced concrete collectors lining was performed. 
Based on analysis of the recording, four characteristic lining deformation of the shape in vulnerable parts of the collector were identified: in calotte, on the sides of calotte, sides themselves, and sides of ducts. 
Deformations in calotte zone were in form of tension cracks, reinforcement tears and separation of concrete from the reinforcement created due to high tensile stresses in the inner part of the reinforced concrete lining. The worst damage was observed due to shear stresses in the lateral parts of the calotte, while the cracks in some parts exceeded 10 cm. These are very large and dangerous damages to the collector. Given that there was a fracture of concrete, loads in those areas was taken over by the armature, which was affected by severe corrosion. Due to the large vertical pressures and the tendency for flattening of the collector in internal lateral parts of support, there was erosion of concrete in the form of plates. Small cracks appeared in the side parts of the collector ducts, too. 
For collector cross sections recording, in addition to the geodetic procedure, rotating laser beam procedure was applied. Based on these recordings it can be concluded that the profile of the collector, on his damaged sections, is ""flattened"". The laser process enables easier, faster and more credible measurements of the size and shape of the profile, which may be of particular importance when installing frameworks for future temporary and permanent rehabilitation of vulnerable sections of the collector. 
Changes in the deformation of the ten selected places in collectors were observed using embedded devices for measuring deformation cracks in collector reinforced concrete support. Final results of monitoring changes in absolute and relative deformation of reinforced concrete collector of over time show that established shifts arc part of the process of reinforced concrete roof supports deformation, which is directed towards the fracture and support breaking.",
publisher = "Society of Chemists and Technologists of Macedonia",
journal = "24th Congress of Chemists and Technologists of Macedonia, International Conference",
title = "Monitoring of Krivelj river collector deformation",
pages = "161-161"
}

Pantović, R., Pantović, M., Pantović, K.,& Pavlović, M.. (2016). Monitoring of Krivelj river collector deformation. in 24th Congress of Chemists and Technologists of Macedonia, International Conference
Society of Chemists and Technologists of Macedonia., 161-161.

Pantović R, Pantović M, Pantović K, Pavlović M. Monitoring of Krivelj river collector deformation. in 24th Congress of Chemists and Technologists of Macedonia, International Conference. 2016;:161-161..

Pantović, Radoje, Pantović, Marijana, Pantović, Katarina, Pavlović, Miroslav, "Monitoring of Krivelj river collector deformation" in 24th Congress of Chemists and Technologists of Macedonia, International Conference (2016):161-161.

TY  - CONF
AU  - Milosavljević, Jelena
AU  - Šerbula, Snežana
AU  - Pantović, Katarina
PY  - 2015
UR  - https://ritnms.itnms.ac.rs/handle/123456789/1116
AB  - Limitations and exhaustions of energy sources (e.g. fossil fuels) have resulted in taking major steps in sustainable plans for rational using of resources that exist today and finding new, alternative energy resources. Biomass is renewable energy resource which can be grown where climatic conditions are appropriate. Bio-oil as one of the major products obtained from the pyrolysis of lignocellulosic biomass has a number of industrial applications. After upgrading it is possible to use biooil as fuel for transport. Pyrolysis temperature is the main factor that affects the transfer of heavy metals in the volatile fraction of pyrolysis
products.
PB  - Bor : University of Belgrade, Technical Faculty in Bor
C3  - XXIII International Conference  "ECOLOGICAL TRUTH" Eco-Ist'15
T1  - Pyrolysis of lignocellulosic biomass
EP  - 355
SP  - 349
ER  - 

@conference{
author = "Milosavljević, Jelena and Šerbula, Snežana and Pantović, Katarina",
year = "2015",
abstract = "Limitations and exhaustions of energy sources (e.g. fossil fuels) have resulted in taking major steps in sustainable plans for rational using of resources that exist today and finding new, alternative energy resources. Biomass is renewable energy resource which can be grown where climatic conditions are appropriate. Bio-oil as one of the major products obtained from the pyrolysis of lignocellulosic biomass has a number of industrial applications. After upgrading it is possible to use biooil as fuel for transport. Pyrolysis temperature is the main factor that affects the transfer of heavy metals in the volatile fraction of pyrolysis
products.",
publisher = "Bor : University of Belgrade, Technical Faculty in Bor",
journal = "XXIII International Conference  "ECOLOGICAL TRUTH" Eco-Ist'15",
title = "Pyrolysis of lignocellulosic biomass",
pages = "355-349"
}

Milosavljević, J., Šerbula, S.,& Pantović, K.. (2015). Pyrolysis of lignocellulosic biomass. in XXIII International Conference  "ECOLOGICAL TRUTH" Eco-Ist'15
Bor : University of Belgrade, Technical Faculty in Bor., 349-355.

Milosavljević J, Šerbula S, Pantović K. Pyrolysis of lignocellulosic biomass. in XXIII International Conference  "ECOLOGICAL TRUTH" Eco-Ist'15. 2015;:349-355..

Milosavljević, Jelena, Šerbula, Snežana, Pantović, Katarina, "Pyrolysis of lignocellulosic biomass" in XXIII International Conference  "ECOLOGICAL TRUTH" Eco-Ist'15 (2015):349-355.

TY  - CONF
AU  - Jovanov, Vojo
AU  - Anguseva, Biljana
AU  - Pantović, Katarina
AU  - Fidancevska, Emilija
PY  - 2015
UR  - https://ritnms.itnms.ac.rs/handle/123456789/1117
AB  - Ceramics microstructure was designed using waste flay ash (REK Bitola, Macedonia) and clay. The raw materials were characterized from chemical, mineralogical and thermal aspect. The ceramics was designed using the granulation less than 0.063 mm. The clay content varied from 10 to 90 wt.%. The consolidation of the compacts was realized at pressure of 45 MPa and sintering at different temperatures (900, 1000, 1500 and 1100 oC/1h, heating rate of 10oC/min).  
The designed microstructure of the composite with composition 60wt% clay and 40wt% fly ash sintered at 1100oC/1h was found as optimal regarding to its properties: density- 2.089g/cm2;  water absorption- 7.02%, bending strength – 50.47 MPa and E-modulus - 25,35GPa. Technical coefficient of thermal expansion was α20-600=7.03x10-6/oC.
PB  - Bor : University of Belgrade, Technical Faculty in Bor
C3  - XXIII International Conference  "ECOLOGICAL TRUTH" Eco-Ist'15
T1  - Design of microstructure of ceramics based on waste fly ash and clay
EP  - 211
SP  - 207
ER  - 

@conference{
author = "Jovanov, Vojo and Anguseva, Biljana and Pantović, Katarina and Fidancevska, Emilija",
year = "2015",
abstract = "Ceramics microstructure was designed using waste flay ash (REK Bitola, Macedonia) and clay. The raw materials were characterized from chemical, mineralogical and thermal aspect. The ceramics was designed using the granulation less than 0.063 mm. The clay content varied from 10 to 90 wt.%. The consolidation of the compacts was realized at pressure of 45 MPa and sintering at different temperatures (900, 1000, 1500 and 1100 oC/1h, heating rate of 10oC/min).  
The designed microstructure of the composite with composition 60wt% clay and 40wt% fly ash sintered at 1100oC/1h was found as optimal regarding to its properties: density- 2.089g/cm2;  water absorption- 7.02%, bending strength – 50.47 MPa and E-modulus - 25,35GPa. Technical coefficient of thermal expansion was α20-600=7.03x10-6/oC.",
publisher = "Bor : University of Belgrade, Technical Faculty in Bor",
journal = "XXIII International Conference  "ECOLOGICAL TRUTH" Eco-Ist'15",
title = "Design of microstructure of ceramics based on waste fly ash and clay",
pages = "211-207"
}

Jovanov, V., Anguseva, B., Pantović, K.,& Fidancevska, E.. (2015). Design of microstructure of ceramics based on waste fly ash and clay. in XXIII International Conference  "ECOLOGICAL TRUTH" Eco-Ist'15
Bor : University of Belgrade, Technical Faculty in Bor., 207-211.

Jovanov V, Anguseva B, Pantović K, Fidancevska E. Design of microstructure of ceramics based on waste fly ash and clay. in XXIII International Conference  "ECOLOGICAL TRUTH" Eco-Ist'15. 2015;:207-211..

Jovanov, Vojo, Anguseva, Biljana, Pantović, Katarina, Fidancevska, Emilija, "Design of microstructure of ceramics based on waste fly ash and clay" in XXIII International Conference  "ECOLOGICAL TRUTH" Eco-Ist'15 (2015):207-211.