TY  - JOUR
AU  - Nikolić, Vesna D.
AU  - Đokić, Jovana M.
AU  - Dinić, Denis P.
AU  - Marinković, Aleksandar 
AU  - Jevtić, Sanja O.
AU  - Anđić, Zoran M.
AU  - Kamberović, Željko J.
PY  - 2023
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/6235
AB  - Porozna keramika sa industrijskog aspekta predstavlja značajan materijal, međutim, za njenu pripremu se još uvek traže ekonomski i tehnološki prihvatljiva rešenja. Kontrola poroznosti predstavlja ključan korak u postizanju željenih svojstava za određenu primenu. U cilju dobijanja multiporozne keramike u ovom radu korišćena je kaolinska glina i polistirenske perle kao organska žrtvena faza. Uzorci su nakon mešanja sinterovani na 1050 oC tokom 1 h. Karakterizacija je obuhvatila infracrvenu spektroskopiju sa Furijeovom transformacijom (FTIR), 
 kenirajuću elektronsku mikroskopiju (SEM), rendgensku difrakcionu analizu (XRPD), elementnu CHNS analizu i ispitivanje pritisne čvrstoće. Analiza dobijenih rezultata pokazala je da se hijerarhijski uređena, multiporozna keramika, odgovarajućih mehaničkih svojstava može pripremiti u prisustvu organske komponente čijim sagorevanjem tokom sinterovanja zaostaju pore različitih dimenzija.
AB  - From an industrial point of view, porous ceramics represent an important material, however, economically and technologically acceptable solutions are still being sought for its preparation. Porosity control is a key step in achieving the desired properties for a specific application. In order to obtain multiporous ceramics, in this work, kaolin clay and polystyrene beads were used as organic sacrificial phase. After mixing, the samples were sintered at 1050 oC for 1 h. Characterization included Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), X-ray diffraction analysis (XRPD), elemental CHNS analysis and compressive strength investigations. The analysis of the obtained results showed that hierarchically ordered, multiporous ceramics, with appropriate mechanical properties can be prepared in the presence of an organic component whose burnout during sintering leaves behind pores of different dimensions.
PB  - Beograd : Savez inženjera i tehničara Srbije
T2  - Tehnika - Novi materijali
T1  - Sinteza inovativnih keramičkih sorbenata i nosača katalizatora hijerarhijske poroznosti
VL  - 32
IS  - 3
SP  - 269
EP  - 273
DO  - 10.5937/tehnika2303269K
ER  - 

@article{
author = "Nikolić, Vesna D. and Đokić, Jovana M. and Dinić, Denis P. and Marinković, Aleksandar  and Jevtić, Sanja O. and Anđić, Zoran M. and Kamberović, Željko J.",
year = "2023",
abstract = "Porozna keramika sa industrijskog aspekta predstavlja značajan materijal, međutim, za njenu pripremu se još uvek traže ekonomski i tehnološki prihvatljiva rešenja. Kontrola poroznosti predstavlja ključan korak u postizanju željenih svojstava za određenu primenu. U cilju dobijanja multiporozne keramike u ovom radu korišćena je kaolinska glina i polistirenske perle kao organska žrtvena faza. Uzorci su nakon mešanja sinterovani na 1050 oC tokom 1 h. Karakterizacija je obuhvatila infracrvenu spektroskopiju sa Furijeovom transformacijom (FTIR), 
 kenirajuću elektronsku mikroskopiju (SEM), rendgensku difrakcionu analizu (XRPD), elementnu CHNS analizu i ispitivanje pritisne čvrstoće. Analiza dobijenih rezultata pokazala je da se hijerarhijski uređena, multiporozna keramika, odgovarajućih mehaničkih svojstava može pripremiti u prisustvu organske komponente čijim sagorevanjem tokom sinterovanja zaostaju pore različitih dimenzija., From an industrial point of view, porous ceramics represent an important material, however, economically and technologically acceptable solutions are still being sought for its preparation. Porosity control is a key step in achieving the desired properties for a specific application. In order to obtain multiporous ceramics, in this work, kaolin clay and polystyrene beads were used as organic sacrificial phase. After mixing, the samples were sintered at 1050 oC for 1 h. Characterization included Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), X-ray diffraction analysis (XRPD), elemental CHNS analysis and compressive strength investigations. The analysis of the obtained results showed that hierarchically ordered, multiporous ceramics, with appropriate mechanical properties can be prepared in the presence of an organic component whose burnout during sintering leaves behind pores of different dimensions.",
publisher = "Beograd : Savez inženjera i tehničara Srbije",
journal = "Tehnika - Novi materijali",
title = "Sinteza inovativnih keramičkih sorbenata i nosača katalizatora hijerarhijske poroznosti",
volume = "32",
number = "3",
pages = "269-273",
doi = "10.5937/tehnika2303269K"
}

Nikolić, V. D., Đokić, J. M., Dinić, D. P., Marinković, A., Jevtić, S. O., Anđić, Z. M.,& Kamberović, Ž. J.. (2023). Sinteza inovativnih keramičkih sorbenata i nosača katalizatora hijerarhijske poroznosti. in Tehnika - Novi materijali
Beograd : Savez inženjera i tehničara Srbije., 32(3), 269-273.
https://doi.org/10.5937/tehnika2303269K

Nikolić VD, Đokić JM, Dinić DP, Marinković A, Jevtić SO, Anđić ZM, Kamberović ŽJ. Sinteza inovativnih keramičkih sorbenata i nosača katalizatora hijerarhijske poroznosti. in Tehnika - Novi materijali. 2023;32(3):269-273.
doi:10.5937/tehnika2303269K .

Nikolić, Vesna D., Đokić, Jovana M., Dinić, Denis P., Marinković, Aleksandar , Jevtić, Sanja O., Anđić, Zoran M., Kamberović, Željko J., "Sinteza inovativnih keramičkih sorbenata i nosača katalizatora hijerarhijske poroznosti" in Tehnika - Novi materijali, 32, no. 3 (2023):269-273,
https://doi.org/10.5937/tehnika2303269K . .

TY  - CONF
AU  - Sokić, Katarina
AU  - Dikić, Jelena
AU  - Veljović, Đorđe
AU  - Đokić, Jovana
AU  - Anđić, Zoran
AU  - Jevtić, Sanja O.
PY  - 2023
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/6243
AB  - Natural zeolite is a good sorbent for many cations due to its specific porous structure. The degree of sorption efficiency depends on the cation type and the availability of exchange positions in the zeolite lattice. The aim of this work is to
examine the synthesis possibility of a new adsorbent based on natural zeolite and hydroxyapatite. The adsorbent was prepared mechanochemically by using clinoptilolite-rich zeolite tuff from the Slanci deposit (Serbia) and hydroxyapatite
obtained by the hydrothermal process. The milling process was performed in a ball mill and optimized regarding contact time and milling speed. For the synthesis of zeolite/hydroxyapatite adsorbent (ZHAp), optimal values for these two parameters were 10 min and 250 rpm, respectively. The resulting sample ZHAp was characterized by X-ray powder diffraction, thermal analysis and scanning electron microscopy. Diffraction analysis of the ZHAp confirmed the presence of the most abundant mineral in zeolite tuff - clinoptilolite and hydroxyapatite. Needle-like crystals of hydroxyapatite on the clinoptilolite surface are observed in SEM images. Zeolite/hydroxyapatite sample is thermally stable at 800 °C. Adsorption properties of ZHAp were examined for nickel and chromium ions, towards which natural zeolite shows a low affinity. The presence of hydroxyapatite on the zeolite surface led to an increase in the adsorption capacity more than two times for both tested ions compared to the initial zeolite tuff.
PB  - Association of Metallurgical Engineers of Serbia (AMES)
C3  - 5th Metallurgical & Materials Engineering Congress of South-East Europe MME SEE Congress 2023, Trebinje, Bosnia and Herzegovina 7-10th June 2023
T1  - Mechanochemical synthesis and characterization of the adsorbents based on natural zeolite and hydroxyapatite
SP  - 395
EP  - 400
UR  - https://hdl.handle.net/21.15107/rcub_cherry_6243
ER  - 

@conference{
author = "Sokić, Katarina and Dikić, Jelena and Veljović, Đorđe and Đokić, Jovana and Anđić, Zoran and Jevtić, Sanja O.",
year = "2023",
abstract = "Natural zeolite is a good sorbent for many cations due to its specific porous structure. The degree of sorption efficiency depends on the cation type and the availability of exchange positions in the zeolite lattice. The aim of this work is to
examine the synthesis possibility of a new adsorbent based on natural zeolite and hydroxyapatite. The adsorbent was prepared mechanochemically by using clinoptilolite-rich zeolite tuff from the Slanci deposit (Serbia) and hydroxyapatite
obtained by the hydrothermal process. The milling process was performed in a ball mill and optimized regarding contact time and milling speed. For the synthesis of zeolite/hydroxyapatite adsorbent (ZHAp), optimal values for these two parameters were 10 min and 250 rpm, respectively. The resulting sample ZHAp was characterized by X-ray powder diffraction, thermal analysis and scanning electron microscopy. Diffraction analysis of the ZHAp confirmed the presence of the most abundant mineral in zeolite tuff - clinoptilolite and hydroxyapatite. Needle-like crystals of hydroxyapatite on the clinoptilolite surface are observed in SEM images. Zeolite/hydroxyapatite sample is thermally stable at 800 °C. Adsorption properties of ZHAp were examined for nickel and chromium ions, towards which natural zeolite shows a low affinity. The presence of hydroxyapatite on the zeolite surface led to an increase in the adsorption capacity more than two times for both tested ions compared to the initial zeolite tuff.",
publisher = "Association of Metallurgical Engineers of Serbia (AMES)",
journal = "5th Metallurgical & Materials Engineering Congress of South-East Europe MME SEE Congress 2023, Trebinje, Bosnia and Herzegovina 7-10th June 2023",
title = "Mechanochemical synthesis and characterization of the adsorbents based on natural zeolite and hydroxyapatite",
pages = "395-400",
url = "https://hdl.handle.net/21.15107/rcub_cherry_6243"
}

Sokić, K., Dikić, J., Veljović, Đ., Đokić, J., Anđić, Z.,& Jevtić, S. O.. (2023). Mechanochemical synthesis and characterization of the adsorbents based on natural zeolite and hydroxyapatite. in 5th Metallurgical & Materials Engineering Congress of South-East Europe MME SEE Congress 2023, Trebinje, Bosnia and Herzegovina 7-10th June 2023
Association of Metallurgical Engineers of Serbia (AMES)., 395-400.
https://hdl.handle.net/21.15107/rcub_cherry_6243

Sokić K, Dikić J, Veljović Đ, Đokić J, Anđić Z, Jevtić SO. Mechanochemical synthesis and characterization of the adsorbents based on natural zeolite and hydroxyapatite. in 5th Metallurgical & Materials Engineering Congress of South-East Europe MME SEE Congress 2023, Trebinje, Bosnia and Herzegovina 7-10th June 2023. 2023;:395-400.
https://hdl.handle.net/21.15107/rcub_cherry_6243 .

Sokić, Katarina, Dikić, Jelena, Veljović, Đorđe, Đokić, Jovana, Anđić, Zoran, Jevtić, Sanja O., "Mechanochemical synthesis and characterization of the adsorbents based on natural zeolite and hydroxyapatite" in 5th Metallurgical & Materials Engineering Congress of South-East Europe MME SEE Congress 2023, Trebinje, Bosnia and Herzegovina 7-10th June 2023 (2023):395-400,
https://hdl.handle.net/21.15107/rcub_cherry_6243 .

TY  - JOUR
AU  - Nikolić, Vesna
AU  - Đokić, Jovana
AU  - Kamberović, Željko
AU  - Marinković, Aleksandar
AU  - Jevtić, Sanja O.
AU  - Anđić, Zoran
PY  - 2022
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/5514
AB  - The aim of this study was to investigate a possibility of synthesis of porous ceramics with controlled open porosity, which could be used as sorbents and catalyst supports. Two organic additives were used to obtain open porosity: polystyrene beads and cellulose fibers, which are mixed with kaolin clay powder and the appropriate water content. Samples were sintered at 1050 oC for 1 h. Characterization of the obtained products included X-ray powder diffraction analysis (XRPD), Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), thermogravimetric analysis (TGA) and elemental CHNS analysis. In addition, porosity was examined by quantification of visual information. The specific surface areas were determined by the Brunauer–Emmett–Teller (BET) method. Also, density and compressive strength of the obtained samples were assessed. It was determined that by sintering, the organic component completely leaves the system. For samples prepared with polystyrene beads and with cellulose fibers, satisfactory mechanical properties were obtained: compressive strengths were 1.42 and 1.56 MPa, respectively. It was noted that significantly higher open porosity was obtained by using polystyrene beads as a sacrificial template (porosity of ̴56 %) instead of cellulose fibers (porosity of ̴6 %).
T2  - Hemijska Industrija
T1  - Investigating possibilities for synthesis of novel sorbents and catalyst carriers based on ceramics with controlled open porosity
VL  - 76
IS  - 2
SP  - 87
EP  - 95
DO  - 10.2298/HEMIND210809005N
ER  - 

@article{
author = "Nikolić, Vesna and Đokić, Jovana and Kamberović, Željko and Marinković, Aleksandar and Jevtić, Sanja O. and Anđić, Zoran",
year = "2022",
abstract = "The aim of this study was to investigate a possibility of synthesis of porous ceramics with controlled open porosity, which could be used as sorbents and catalyst supports. Two organic additives were used to obtain open porosity: polystyrene beads and cellulose fibers, which are mixed with kaolin clay powder and the appropriate water content. Samples were sintered at 1050 oC for 1 h. Characterization of the obtained products included X-ray powder diffraction analysis (XRPD), Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), thermogravimetric analysis (TGA) and elemental CHNS analysis. In addition, porosity was examined by quantification of visual information. The specific surface areas were determined by the Brunauer–Emmett–Teller (BET) method. Also, density and compressive strength of the obtained samples were assessed. It was determined that by sintering, the organic component completely leaves the system. For samples prepared with polystyrene beads and with cellulose fibers, satisfactory mechanical properties were obtained: compressive strengths were 1.42 and 1.56 MPa, respectively. It was noted that significantly higher open porosity was obtained by using polystyrene beads as a sacrificial template (porosity of ̴56 %) instead of cellulose fibers (porosity of ̴6 %).",
journal = "Hemijska Industrija",
title = "Investigating possibilities for synthesis of novel sorbents and catalyst carriers based on ceramics with controlled open porosity",
volume = "76",
number = "2",
pages = "87-95",
doi = "10.2298/HEMIND210809005N"
}

Nikolić, V., Đokić, J., Kamberović, Ž., Marinković, A., Jevtić, S. O.,& Anđić, Z.. (2022). Investigating possibilities for synthesis of novel sorbents and catalyst carriers based on ceramics with controlled open porosity. in Hemijska Industrija, 76(2), 87-95.
https://doi.org/10.2298/HEMIND210809005N

Nikolić V, Đokić J, Kamberović Ž, Marinković A, Jevtić SO, Anđić Z. Investigating possibilities for synthesis of novel sorbents and catalyst carriers based on ceramics with controlled open porosity. in Hemijska Industrija. 2022;76(2):87-95.
doi:10.2298/HEMIND210809005N .

Nikolić, Vesna, Đokić, Jovana, Kamberović, Željko, Marinković, Aleksandar, Jevtić, Sanja O., Anđić, Zoran, "Investigating possibilities for synthesis of novel sorbents and catalyst carriers based on ceramics with controlled open porosity" in Hemijska Industrija, 76, no. 2 (2022):87-95,
https://doi.org/10.2298/HEMIND210809005N . .

TY  - CONF
AU  - Manojlović, Vaso
AU  - Kamberović, Željko
AU  - Jevtić, Sanja O.
AU  - Gajić, Nataša
AU  - Ranitović, Milisav
AU  - Milošević, Anđela
AU  - Đokić, Jovana
PY  - 2021
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/6297
AB  - In the hydrometallurgical process for getting the zine, after acid leaching, zinc-ferric sludge as the byproduct is further treated in the so-called jarosite procedure In the jarosite procedure, Pb and Ag are valorized, and Fe is removed through the residue. Besides Fe, in the jarosite residue, the other impurities are present (2n. Cu Ni, Cr, Co, As, Cd, Pb, 5b, Ge, Ga, In) which could be mobile in the environment causing the hazardous consequences [11]. The main goal of our research is to determine the activation energy of the decomposition of jarosite using thermogravimetry analysis. The thermogravimetric curve (IG) shows three segments, which indicate that the degradation of jarosite occurs in three steps. Below 200 °C, mass loss is 1.1%, due to adsorbed water evaporation. At an interval of 285-440 °C (with DTG maximum at 418 °C) deammonicifiation and dehydroxylation occurred. Also, structural water is released above 390 °C, so that three reactions occur simultaneously in this temperature range - which justifies the high activation energy on a - 0.3 and temperature of 420 °C (Figure b, c). Jarosite decomposed into ferrous sulfate and hematite with a weight loss of 22.6%. The mass loss in the range 520 to 750 °C (DTG maximum at 625 °C) is attributed to the loss of sulfate as $Oz. Two minima (420.1 and 625.9 °C) are observed on the DSC curve, which indicates that the process of jarosite decomposition is endothermic. The Fell could oxidize from intermediate phases, which is favorable to get Fe(ILD) that will later precipitate in the water. For kinetic analysis, we used Kissinger-Akahira Sunose (KAS) integral isoconversional method for the determination of Ea. The energy of activation changes with conversion, a, and the average value is 235.4 kJ/mol - which is higher than the literature 197.7 kJ/mol [2]; this is expected due to the complexity in the chemical composition of industrial jarosite residue.
PB  - Kosovska Mitrovica : Fakultet tehničkih nauka
C3  - Deseti simpozijum o termodinamici i faznim dijagramima
T1  - Isoconversional analysis of jarosite residue thermal decomposition
UR  - https://hdl.handle.net/21.15107/rcub_cherry_6297
ER  - 

@conference{
author = "Manojlović, Vaso and Kamberović, Željko and Jevtić, Sanja O. and Gajić, Nataša and Ranitović, Milisav and Milošević, Anđela and Đokić, Jovana",
year = "2021",
abstract = "In the hydrometallurgical process for getting the zine, after acid leaching, zinc-ferric sludge as the byproduct is further treated in the so-called jarosite procedure In the jarosite procedure, Pb and Ag are valorized, and Fe is removed through the residue. Besides Fe, in the jarosite residue, the other impurities are present (2n. Cu Ni, Cr, Co, As, Cd, Pb, 5b, Ge, Ga, In) which could be mobile in the environment causing the hazardous consequences [11]. The main goal of our research is to determine the activation energy of the decomposition of jarosite using thermogravimetry analysis. The thermogravimetric curve (IG) shows three segments, which indicate that the degradation of jarosite occurs in three steps. Below 200 °C, mass loss is 1.1%, due to adsorbed water evaporation. At an interval of 285-440 °C (with DTG maximum at 418 °C) deammonicifiation and dehydroxylation occurred. Also, structural water is released above 390 °C, so that three reactions occur simultaneously in this temperature range - which justifies the high activation energy on a - 0.3 and temperature of 420 °C (Figure b, c). Jarosite decomposed into ferrous sulfate and hematite with a weight loss of 22.6%. The mass loss in the range 520 to 750 °C (DTG maximum at 625 °C) is attributed to the loss of sulfate as $Oz. Two minima (420.1 and 625.9 °C) are observed on the DSC curve, which indicates that the process of jarosite decomposition is endothermic. The Fell could oxidize from intermediate phases, which is favorable to get Fe(ILD) that will later precipitate in the water. For kinetic analysis, we used Kissinger-Akahira Sunose (KAS) integral isoconversional method for the determination of Ea. The energy of activation changes with conversion, a, and the average value is 235.4 kJ/mol - which is higher than the literature 197.7 kJ/mol [2]; this is expected due to the complexity in the chemical composition of industrial jarosite residue.",
publisher = "Kosovska Mitrovica : Fakultet tehničkih nauka",
journal = "Deseti simpozijum o termodinamici i faznim dijagramima",
title = "Isoconversional analysis of jarosite residue thermal decomposition",
url = "https://hdl.handle.net/21.15107/rcub_cherry_6297"
}

Manojlović, V., Kamberović, Ž., Jevtić, S. O., Gajić, N., Ranitović, M., Milošević, A.,& Đokić, J.. (2021). Isoconversional analysis of jarosite residue thermal decomposition. in Deseti simpozijum o termodinamici i faznim dijagramima
Kosovska Mitrovica : Fakultet tehničkih nauka..
https://hdl.handle.net/21.15107/rcub_cherry_6297

Manojlović V, Kamberović Ž, Jevtić SO, Gajić N, Ranitović M, Milošević A, Đokić J. Isoconversional analysis of jarosite residue thermal decomposition. in Deseti simpozijum o termodinamici i faznim dijagramima. 2021;.
https://hdl.handle.net/21.15107/rcub_cherry_6297 .

Manojlović, Vaso, Kamberović, Željko, Jevtić, Sanja O., Gajić, Nataša, Ranitović, Milisav, Milošević, Anđela, Đokić, Jovana, "Isoconversional analysis of jarosite residue thermal decomposition" in Deseti simpozijum o termodinamici i faznim dijagramima (2021),
https://hdl.handle.net/21.15107/rcub_cherry_6297 .

TY  - CONF
AU  - Gajić, Nataša
AU  - Kamberović, Željko
AU  - Ranitović, Milisav
AU  - Milošević, Anđela
AU  - Manojlović, Vaso
AU  - Jevtić, Sanja O.
AU  - Đokić, Jovana
PY  - 2021
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/6296
AB  - Jarosite waste is classified as hazardous one. It contains toxic elements (Cd, As, Hg) with strong leaching toxicity and metal mobility. Nevertheless, jarosite waste is usually landfilled which have an adverse impact on the environment and human health. In addition, jarosite waste contains significant amounts of the base (Fe, Zn, Pb. Cu), critical (In, Ge, Ga), and precious metals (Au, Ag) which should not be discarded but recovered [1]. This paper presents thermodynamic modelling of roasting of non-standard Pb/Ag Jarosite. This approach enables the determination of optimal process conditions for product formation with required phase composition, and thus valorizations of valuable metals. Thermodynamic data for the detailed analysis of roasting were calculated using HSC Chemistry Software v. 9.9.2.3 [2]. The main objectives were the determination of the temperature effect and ratio of input material vs. sulphating and oxidizing agent on the formation of the required roasting product phase composition. To determine the stability of the roasting product compounds, modelling of the phase stability diagrams was done.
The change of the standard Gibbs free energy (ΔrG°) versus the temperature of analyzed transformation reactions the examined system suggests thermodynamical possibility at a temperature higher than 700 °C. Also, the results of thermodynamic calculations, within the equilibrium composition model, showed that the maximum content of hematite, and metal sulphates (Cu, Pb and Zn), as required product compounds, can be obtained within the temperature range of 700-750 °C. Phase stability modelling confirmed formation of the mentioned phases When logarithmic partial pressure of oxygen and sulphur is - 4.5 bar and -20.0 bar, respectively.
PB  - Kosovska Mitrovica : Fakultet tehničkih nauka
C3  - Deseti simpozijum o termodinamici i faznim dijagramima
T1  - Thermodynamic modelling of the roasting process of the nonstandard Pb/Ag Jarosite
UR  - https://hdl.handle.net/21.15107/rcub_cherry_6296
ER  - 

@conference{
author = "Gajić, Nataša and Kamberović, Željko and Ranitović, Milisav and Milošević, Anđela and Manojlović, Vaso and Jevtić, Sanja O. and Đokić, Jovana",
year = "2021",
abstract = "Jarosite waste is classified as hazardous one. It contains toxic elements (Cd, As, Hg) with strong leaching toxicity and metal mobility. Nevertheless, jarosite waste is usually landfilled which have an adverse impact on the environment and human health. In addition, jarosite waste contains significant amounts of the base (Fe, Zn, Pb. Cu), critical (In, Ge, Ga), and precious metals (Au, Ag) which should not be discarded but recovered [1]. This paper presents thermodynamic modelling of roasting of non-standard Pb/Ag Jarosite. This approach enables the determination of optimal process conditions for product formation with required phase composition, and thus valorizations of valuable metals. Thermodynamic data for the detailed analysis of roasting were calculated using HSC Chemistry Software v. 9.9.2.3 [2]. The main objectives were the determination of the temperature effect and ratio of input material vs. sulphating and oxidizing agent on the formation of the required roasting product phase composition. To determine the stability of the roasting product compounds, modelling of the phase stability diagrams was done.
The change of the standard Gibbs free energy (ΔrG°) versus the temperature of analyzed transformation reactions the examined system suggests thermodynamical possibility at a temperature higher than 700 °C. Also, the results of thermodynamic calculations, within the equilibrium composition model, showed that the maximum content of hematite, and metal sulphates (Cu, Pb and Zn), as required product compounds, can be obtained within the temperature range of 700-750 °C. Phase stability modelling confirmed formation of the mentioned phases When logarithmic partial pressure of oxygen and sulphur is - 4.5 bar and -20.0 bar, respectively.",
publisher = "Kosovska Mitrovica : Fakultet tehničkih nauka",
journal = "Deseti simpozijum o termodinamici i faznim dijagramima",
title = "Thermodynamic modelling of the roasting process of the nonstandard Pb/Ag Jarosite",
url = "https://hdl.handle.net/21.15107/rcub_cherry_6296"
}

Gajić, N., Kamberović, Ž., Ranitović, M., Milošević, A., Manojlović, V., Jevtić, S. O.,& Đokić, J.. (2021). Thermodynamic modelling of the roasting process of the nonstandard Pb/Ag Jarosite. in Deseti simpozijum o termodinamici i faznim dijagramima
Kosovska Mitrovica : Fakultet tehničkih nauka..
https://hdl.handle.net/21.15107/rcub_cherry_6296

Gajić N, Kamberović Ž, Ranitović M, Milošević A, Manojlović V, Jevtić SO, Đokić J. Thermodynamic modelling of the roasting process of the nonstandard Pb/Ag Jarosite. in Deseti simpozijum o termodinamici i faznim dijagramima. 2021;.
https://hdl.handle.net/21.15107/rcub_cherry_6296 .

Gajić, Nataša, Kamberović, Željko, Ranitović, Milisav, Milošević, Anđela, Manojlović, Vaso, Jevtić, Sanja O., Đokić, Jovana, "Thermodynamic modelling of the roasting process of the nonstandard Pb/Ag Jarosite" in Deseti simpozijum o termodinamici i faznim dijagramima (2021),
https://hdl.handle.net/21.15107/rcub_cherry_6296 .