TY  - CONF
AU  - Stojković, Milica
AU  - Dedić, Sofija
AU  - Đolić, Maja
AU  - Ćujić, Mirjana
AU  - Pavićević, Vladimir
AU  - Ristić, Mirjana
AU  - Perić-Grujić, Aleksandra
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11230
AB  - Fly ash originating from coal combustion in thermal power plants is generated in landfills in large amounts, and due to the high content of heavy metals and metalloids whose mobility is hazardous to the environment and human health, it causes soil and groundwater pollution. Scientific research in the field of "alternative mining" is significant, where heavy metals and rare earth elements would be recovered from waste materials such as fly ash using various extraction methods. The aim of this paper is to determine the optimal extraction process of the examined elements: V, Cr, Mn, Co, Ni, Cu, Zn, As, Cd, and Pb from fly ash. Two extraction agents were used: sulfuric and acetic acid. In the first set of experiments, the fly ash was immersed immediately in acids, and in the second set, this process was preceded by the addition of sodium hydroxide, which effectively destroys the alumina-silicate matrix. Several different parameters were also monitored: ratio of fly ash and acid/acid mixture (1:5, 1:30), temperature (25 and 45°C), duration of the process (4 and 24 h), and stirring. For the extraction of Pb - H2SO4, temperature and time were shown as significant parameters, while for Cd, only H2SO4 was an effective extractant. Concerning the As metalloid, the acetic acid, solid/liquid ratio, and time were significant, while for Zn, Cu, Co, Mn, and V metals only the solid/liquid ratio was significant. Determination of the content of heavy metals and metalloids was done by the ICP-MS.
PB  - Belgrade : Association of Metallurgical Engineers of Serbia (AMES)
C3  - 5th Metallurgical & Materials Engineering Congress of South-East Europe : Proceedings
T1  - The Optimization of Metals and Metalloids Extraction From Fly Ash
SP  - 347
EP  - 352
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11230
ER  - 

@conference{
author = "Stojković, Milica and Dedić, Sofija and Đolić, Maja and Ćujić, Mirjana and Pavićević, Vladimir and Ristić, Mirjana and Perić-Grujić, Aleksandra",
year = "2023",
abstract = "Fly ash originating from coal combustion in thermal power plants is generated in landfills in large amounts, and due to the high content of heavy metals and metalloids whose mobility is hazardous to the environment and human health, it causes soil and groundwater pollution. Scientific research in the field of "alternative mining" is significant, where heavy metals and rare earth elements would be recovered from waste materials such as fly ash using various extraction methods. The aim of this paper is to determine the optimal extraction process of the examined elements: V, Cr, Mn, Co, Ni, Cu, Zn, As, Cd, and Pb from fly ash. Two extraction agents were used: sulfuric and acetic acid. In the first set of experiments, the fly ash was immersed immediately in acids, and in the second set, this process was preceded by the addition of sodium hydroxide, which effectively destroys the alumina-silicate matrix. Several different parameters were also monitored: ratio of fly ash and acid/acid mixture (1:5, 1:30), temperature (25 and 45°C), duration of the process (4 and 24 h), and stirring. For the extraction of Pb - H2SO4, temperature and time were shown as significant parameters, while for Cd, only H2SO4 was an effective extractant. Concerning the As metalloid, the acetic acid, solid/liquid ratio, and time were significant, while for Zn, Cu, Co, Mn, and V metals only the solid/liquid ratio was significant. Determination of the content of heavy metals and metalloids was done by the ICP-MS.",
publisher = "Belgrade : Association of Metallurgical Engineers of Serbia (AMES)",
journal = "5th Metallurgical & Materials Engineering Congress of South-East Europe : Proceedings",
title = "The Optimization of Metals and Metalloids Extraction From Fly Ash",
pages = "347-352",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11230"
}

Stojković, M., Dedić, S., Đolić, M., Ćujić, M., Pavićević, V., Ristić, M.,& Perić-Grujić, A.. (2023). The Optimization of Metals and Metalloids Extraction From Fly Ash. in 5th Metallurgical & Materials Engineering Congress of South-East Europe : Proceedings
Belgrade : Association of Metallurgical Engineers of Serbia (AMES)., 347-352.
https://hdl.handle.net/21.15107/rcub_vinar_11230

Stojković M, Dedić S, Đolić M, Ćujić M, Pavićević V, Ristić M, Perić-Grujić A. The Optimization of Metals and Metalloids Extraction From Fly Ash. in 5th Metallurgical & Materials Engineering Congress of South-East Europe : Proceedings. 2023;:347-352.
https://hdl.handle.net/21.15107/rcub_vinar_11230 .

Stojković, Milica, Dedić, Sofija, Đolić, Maja, Ćujić, Mirjana, Pavićević, Vladimir, Ristić, Mirjana, Perić-Grujić, Aleksandra, "The Optimization of Metals and Metalloids Extraction From Fly Ash" in 5th Metallurgical & Materials Engineering Congress of South-East Europe : Proceedings (2023):347-352,
https://hdl.handle.net/21.15107/rcub_vinar_11230 .

TY  - CONF
AU  - Ćujić, Mirjana
AU  - Vitorović, Marina
AU  - Stojković, Milica
AU  - Đolić, Maja
AU  - Perić Grujić, Aleksandra
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11232
AB  - Sagorevanjem uglja u termoelektranama nastaju velike količine letećeg pepela koji u svom sastavu sadrži teške metale i metaloide čije izluživanje može naruštiti stanje životne sredine u ve- likoj meri. Cilj ovog rada jeste optimizacija procesa stabilizacije matrice letećeg pepela upotrebom oksida, hidroksida i karbonata kalcijuma, kao i ispitivanje stepena desorpcije (izluživanje) ele- menata u desorpcionim rastvorima. Stabilizacijom letećeg pepela omogućila bi se njegova dalja upotrebe u građevinskoj industriji ili u svrhu adsorbenta. Kako bi se dobili optimalni uslovi korišćeno je nekoliko različitih stabilizatora (CaO, Ca(OH)2 i CaCO3) u različitim koncentracijama (5% i 7%). Variraran je i sastav desorpcionog rastvora (dejonizovana voda i 4% i 8% sirćetna kiselina) kao i odnos letećeg pepela i desoprcionog rastvora (1:10 i 1:30). Koncentracija jona teških metala i metaloida (V, Cr, Mn, Co, Ni, Cu, Zn, As, Cd, Pb) određivana je metodom masene spektrometrije sa indukovano spregnutom plazmom (ICP- MS). Za obradu podataka rađena je multivarijaciona statistička analiza (korelaciona analiza, ana- liza glavnih elemenata i klasterska analiza). Korišćen je statistički softver MINITAB.
AB  - Combustion of coal in thermal power plants produces large amounts of fly ash, which contains heavy metals and metalloids, and their leaching can greatly damage the environment. The aim of this paper is to optimize the process of stabilization of the fly ash matrix using calcium oxide, hydroxide and carbonate, as well as to examine the degree of desorption (leaching) of elements in desorption solutions. Stabilization of fly ash would enable its further use in the construction industry or as an adsorbent. In order to obtain optimal conditions, several different stabilizers (CaO, Ca(OH)2 and CaCO3) were used in different concentrations (5% and 7%). The composition of the desorption solution (deionized water and 4% and 8% acetic acid) is also variable, as is the ratio of fly ash to the desorption solution (1:10 and 1:30). The concentration of heavy metal ions and metalloids (V, Cr, Mn, Co, Ni, Cu, Zn, As, Cd, Pb) was determined by the method of Inductively coupled plasma mass spectrometry (ICP-MS). Multivariate statistical analysis (correlation analysis, principal component analysis (PCA) and cluster analysis (CA)) was performed for data processing. MINITAB statistical software was used.
PB  - Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS) : Društvo za procesnu tehniku
C3  - 36. Međunarodni kongres o procesnoj industriji - PROCESING ′23 : zbornik radova
T1  - Stabilizacija matrice letećeg pepela primenom kalcijum-oksida, hidroksida i karbonata
T1  - Stabilization of Fly Ash Matrix Using Calcium-Oxide, Hydroxide and Carbonate
SP  - 115
EP  - 115
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11232
ER  - 

@conference{
author = "Ćujić, Mirjana and Vitorović, Marina and Stojković, Milica and Đolić, Maja and Perić Grujić, Aleksandra",
year = "2023",
abstract = "Sagorevanjem uglja u termoelektranama nastaju velike količine letećeg pepela koji u svom sastavu sadrži teške metale i metaloide čije izluživanje može naruštiti stanje životne sredine u ve- likoj meri. Cilj ovog rada jeste optimizacija procesa stabilizacije matrice letećeg pepela upotrebom oksida, hidroksida i karbonata kalcijuma, kao i ispitivanje stepena desorpcije (izluživanje) ele- menata u desorpcionim rastvorima. Stabilizacijom letećeg pepela omogućila bi se njegova dalja upotrebe u građevinskoj industriji ili u svrhu adsorbenta. Kako bi se dobili optimalni uslovi korišćeno je nekoliko različitih stabilizatora (CaO, Ca(OH)2 i CaCO3) u različitim koncentracijama (5% i 7%). Variraran je i sastav desorpcionog rastvora (dejonizovana voda i 4% i 8% sirćetna kiselina) kao i odnos letećeg pepela i desoprcionog rastvora (1:10 i 1:30). Koncentracija jona teških metala i metaloida (V, Cr, Mn, Co, Ni, Cu, Zn, As, Cd, Pb) određivana je metodom masene spektrometrije sa indukovano spregnutom plazmom (ICP- MS). Za obradu podataka rađena je multivarijaciona statistička analiza (korelaciona analiza, ana- liza glavnih elemenata i klasterska analiza). Korišćen je statistički softver MINITAB., Combustion of coal in thermal power plants produces large amounts of fly ash, which contains heavy metals and metalloids, and their leaching can greatly damage the environment. The aim of this paper is to optimize the process of stabilization of the fly ash matrix using calcium oxide, hydroxide and carbonate, as well as to examine the degree of desorption (leaching) of elements in desorption solutions. Stabilization of fly ash would enable its further use in the construction industry or as an adsorbent. In order to obtain optimal conditions, several different stabilizers (CaO, Ca(OH)2 and CaCO3) were used in different concentrations (5% and 7%). The composition of the desorption solution (deionized water and 4% and 8% acetic acid) is also variable, as is the ratio of fly ash to the desorption solution (1:10 and 1:30). The concentration of heavy metal ions and metalloids (V, Cr, Mn, Co, Ni, Cu, Zn, As, Cd, Pb) was determined by the method of Inductively coupled plasma mass spectrometry (ICP-MS). Multivariate statistical analysis (correlation analysis, principal component analysis (PCA) and cluster analysis (CA)) was performed for data processing. MINITAB statistical software was used.",
publisher = "Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS) : Društvo za procesnu tehniku",
journal = "36. Međunarodni kongres o procesnoj industriji - PROCESING ′23 : zbornik radova",
title = "Stabilizacija matrice letećeg pepela primenom kalcijum-oksida, hidroksida i karbonata, Stabilization of Fly Ash Matrix Using Calcium-Oxide, Hydroxide and Carbonate",
pages = "115-115",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11232"
}

Ćujić, M., Vitorović, M., Stojković, M., Đolić, M.,& Perić Grujić, A.. (2023). Stabilizacija matrice letećeg pepela primenom kalcijum-oksida, hidroksida i karbonata. in 36. Međunarodni kongres o procesnoj industriji - PROCESING ′23 : zbornik radova
Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS) : Društvo za procesnu tehniku., 115-115.
https://hdl.handle.net/21.15107/rcub_vinar_11232

Ćujić M, Vitorović M, Stojković M, Đolić M, Perić Grujić A. Stabilizacija matrice letećeg pepela primenom kalcijum-oksida, hidroksida i karbonata. in 36. Međunarodni kongres o procesnoj industriji - PROCESING ′23 : zbornik radova. 2023;:115-115.
https://hdl.handle.net/21.15107/rcub_vinar_11232 .

Ćujić, Mirjana, Vitorović, Marina, Stojković, Milica, Đolić, Maja, Perić Grujić, Aleksandra, "Stabilizacija matrice letećeg pepela primenom kalcijum-oksida, hidroksida i karbonata" in 36. Međunarodni kongres o procesnoj industriji - PROCESING ′23 : zbornik radova (2023):115-115,
https://hdl.handle.net/21.15107/rcub_vinar_11232 .