Stevanović, Slavica

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  • Stevanović, Slavica (10)
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Author's Bibliography

The Prediction of Heavy Metal Permeate Flux in Complexation-Microfiltration Process: Polynomial Neural Network Approach

Sekulić, Zoran; Antanasijević, Davor; Stevanović, Slavica; Trivunac, Katarina

(Springer International Publishing Ag, Cham, 2019)

TY  - JOUR
AU  - Sekulić, Zoran
AU  - Antanasijević, Davor
AU  - Stevanović, Slavica
AU  - Trivunac, Katarina
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4323
AB  - Membrane filtration techniques are distinguished among methods for wastewater treatment and fully correspond to the requirements of the green concept of chemistry and production. The limiting factor for greater application of these methods is the phenomenon of fouling and the decline of the permeate flux. In this study, polynomial neural network based on group method data handling (GMDH) algorithm was applied to predict the performance of the complexation-microfiltration process for the removal of Pb(II), Zn(II), and Cd(II) from synthetic wastewater. The influence of working parameters such as pH, initial concentration of metal ions, type of complexing agent, and pressure on flux was experimentally determined. The data obtained were used as input parameters for the GMDH model as well as for the multiple linear regression (MLR) model. Root mean square error (RMSE), mean absolute error (MAE), and mean absolute percent error (MAPE) were used for evaluation purposes. Results showed that the developed model has excellent performance in flux prediction with R-2 of 0.9648.
PB  - Springer International Publishing Ag, Cham
T2  - Water Air and Soil Pollution
T1  - The Prediction of Heavy Metal Permeate Flux in Complexation-Microfiltration Process: Polynomial Neural Network Approach
IS  - 1
VL  - 230
DO  - 10.1007/s11270-018-4072-y
ER  - 
@article{
author = "Sekulić, Zoran and Antanasijević, Davor and Stevanović, Slavica and Trivunac, Katarina",
year = "2019",
abstract = "Membrane filtration techniques are distinguished among methods for wastewater treatment and fully correspond to the requirements of the green concept of chemistry and production. The limiting factor for greater application of these methods is the phenomenon of fouling and the decline of the permeate flux. In this study, polynomial neural network based on group method data handling (GMDH) algorithm was applied to predict the performance of the complexation-microfiltration process for the removal of Pb(II), Zn(II), and Cd(II) from synthetic wastewater. The influence of working parameters such as pH, initial concentration of metal ions, type of complexing agent, and pressure on flux was experimentally determined. The data obtained were used as input parameters for the GMDH model as well as for the multiple linear regression (MLR) model. Root mean square error (RMSE), mean absolute error (MAE), and mean absolute percent error (MAPE) were used for evaluation purposes. Results showed that the developed model has excellent performance in flux prediction with R-2 of 0.9648.",
publisher = "Springer International Publishing Ag, Cham",
journal = "Water Air and Soil Pollution",
title = "The Prediction of Heavy Metal Permeate Flux in Complexation-Microfiltration Process: Polynomial Neural Network Approach",
number = "1",
volume = "230",
doi = "10.1007/s11270-018-4072-y"
}
Sekulić, Z., Antanasijević, D., Stevanović, S.,& Trivunac, K.. (2019). The Prediction of Heavy Metal Permeate Flux in Complexation-Microfiltration Process: Polynomial Neural Network Approach. in Water Air and Soil Pollution
Springer International Publishing Ag, Cham., 230(1).
https://doi.org/10.1007/s11270-018-4072-y
Sekulić Z, Antanasijević D, Stevanović S, Trivunac K. The Prediction of Heavy Metal Permeate Flux in Complexation-Microfiltration Process: Polynomial Neural Network Approach. in Water Air and Soil Pollution. 2019;230(1).
doi:10.1007/s11270-018-4072-y .
Sekulić, Zoran, Antanasijević, Davor, Stevanović, Slavica, Trivunac, Katarina, "The Prediction of Heavy Metal Permeate Flux in Complexation-Microfiltration Process: Polynomial Neural Network Approach" in Water Air and Soil Pollution, 230, no. 1 (2019),
https://doi.org/10.1007/s11270-018-4072-y . .
10
4
8

Microstructural Characterization and Adsorption Properties of Alkali-Activated Materials Based on Metakaolin

Trivunac, Katarina; Kljajević, Ljiljana M.; Nenadović, Snežana S.; Gulicovski, Jelena; Mirković, Miljana M.; Babić, Biljana M.; Stevanović, Slavica

(Međunarodni Institut za nauku o sinterovanju, Beograd, 2016)

TY  - JOUR
AU  - Trivunac, Katarina
AU  - Kljajević, Ljiljana M.
AU  - Nenadović, Snežana S.
AU  - Gulicovski, Jelena
AU  - Mirković, Miljana M.
AU  - Babić, Biljana M.
AU  - Stevanović, Slavica
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3340
AB  - The microstructural characterization and adsorption properties of metakaolin (MK) and alkali-activated metakaolin, known as geopolymer materials (GP) were investigated. The structure and properties of the metakaolin and obtained geopolymer were studied by X-ray diffraction (XRD), scanning electron microscopy (SEM) and Fourier transform infrared (FTIR) spectroscopy. Furthermore, based on the analysis of adsorption efficiency, microstructure and mineral structure, the difference between geopolymer and metakaolin on the performance of immobilizing heavy metals have been discussed. The kinetics of adsorption can be represented by pseudo-second order equation. The results of lead ions adsorption experiments were best fitted by Freundlich adsorption isotherm for both investigated adsorbents. The highest removal efficiencies of alkali-activated material based on metakaolin was found 97.5% at pH 4 and metakaolin removal efficiencies was found 92% at pH 5.5.
PB  - Međunarodni Institut za nauku o sinterovanju, Beograd
T2  - Science of Sintering
T1  - Microstructural Characterization and Adsorption Properties of Alkali-Activated Materials Based on Metakaolin
EP  - 220
IS  - 2
SP  - 209
VL  - 48
DO  - 10.2298/SOS1602209T
ER  - 
@article{
author = "Trivunac, Katarina and Kljajević, Ljiljana M. and Nenadović, Snežana S. and Gulicovski, Jelena and Mirković, Miljana M. and Babić, Biljana M. and Stevanović, Slavica",
year = "2016",
abstract = "The microstructural characterization and adsorption properties of metakaolin (MK) and alkali-activated metakaolin, known as geopolymer materials (GP) were investigated. The structure and properties of the metakaolin and obtained geopolymer were studied by X-ray diffraction (XRD), scanning electron microscopy (SEM) and Fourier transform infrared (FTIR) spectroscopy. Furthermore, based on the analysis of adsorption efficiency, microstructure and mineral structure, the difference between geopolymer and metakaolin on the performance of immobilizing heavy metals have been discussed. The kinetics of adsorption can be represented by pseudo-second order equation. The results of lead ions adsorption experiments were best fitted by Freundlich adsorption isotherm for both investigated adsorbents. The highest removal efficiencies of alkali-activated material based on metakaolin was found 97.5% at pH 4 and metakaolin removal efficiencies was found 92% at pH 5.5.",
publisher = "Međunarodni Institut za nauku o sinterovanju, Beograd",
journal = "Science of Sintering",
title = "Microstructural Characterization and Adsorption Properties of Alkali-Activated Materials Based on Metakaolin",
pages = "220-209",
number = "2",
volume = "48",
doi = "10.2298/SOS1602209T"
}
Trivunac, K., Kljajević, L. M., Nenadović, S. S., Gulicovski, J., Mirković, M. M., Babić, B. M.,& Stevanović, S.. (2016). Microstructural Characterization and Adsorption Properties of Alkali-Activated Materials Based on Metakaolin. in Science of Sintering
Međunarodni Institut za nauku o sinterovanju, Beograd., 48(2), 209-220.
https://doi.org/10.2298/SOS1602209T
Trivunac K, Kljajević LM, Nenadović SS, Gulicovski J, Mirković MM, Babić BM, Stevanović S. Microstructural Characterization and Adsorption Properties of Alkali-Activated Materials Based on Metakaolin. in Science of Sintering. 2016;48(2):209-220.
doi:10.2298/SOS1602209T .
Trivunac, Katarina, Kljajević, Ljiljana M., Nenadović, Snežana S., Gulicovski, Jelena, Mirković, Miljana M., Babić, Biljana M., Stevanović, Slavica, "Microstructural Characterization and Adsorption Properties of Alkali-Activated Materials Based on Metakaolin" in Science of Sintering, 48, no. 2 (2016):209-220,
https://doi.org/10.2298/SOS1602209T . .
9
8
14

Effects of operating parameters on efficiency of lead removal by complexation-microfiltration process

Trivunac, Katarina; Stevanović, Slavica

(Association of Chemical Engineers of Serbia, 2012)

TY  - JOUR
AU  - Trivunac, Katarina
AU  - Stevanović, Slavica
PY  - 2012
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2089
AB  - The majority of lead content found in the environment is a result of human activities. Heavy metals can be hazardous because they tend to bioaccumulate. A complexation-microfiltration process for the removal of Pb(II) ions was studied. The aim of microfiltration of the model wastewater containing heavy metal ions was to find an optimum ratio between the concentrations of the complexing agent and metal, and determining the most favorable pH value. The microfiltration experiments were carried out in a stirred dead-end cell. Diethylaminoethyl cellulose (DEAE 23) was selected as the complexing agent. Versapor membranes were used to separate formed polymermetal complex. The concentration of heavy metal ions after microfiltration in aqueous solution was determined using atomic absorption spectroscopy (AAS). Effects on the amount of complexing agent, concentration of metal ion, pH value and operating pressure on the flux, J, and rejection coefficient, R, were investigated. Experimental results indicate that the pH of the solution has considerable influence on the rejection coefficient. An increase in pH and the amount of complexing agents enabled us to obtain a very high retention coefficient (99%).
AB  - Industrijske otpadne vode ne mogu se prečistiti konvencionalnim postupcima za prečišćavanje vode jer sadrže jone metala, posebno toksičnih, teških metala, kao i druga hemijska jedinjenja koja su biološki nerazgradiva, što destruktivno deluje na mikroorganizme koji su aktivni u procesu prirodnog prečišćavanja i procesima sekundarnog prečišćavanja. U zavisnosti od tipa industrije, u industrijskih otpadnim vodama mogu se naći različite štetne, opasne i toksične supstance. Zagađujuće materije se mogu naći u vodi u rastvornom obliku, u obliku jona ili molekula, koloida, suspenzija i mogu biti adsorbovane na čvrstim telima. Da bi se rešili novi izazovi i bolje iskoristili ekonomski izvori, različite tehnologije su predložene, testirane i primenjene u procesu obrade vode. Među njima, tehnologija membranske filtracije se pokazala veoma uspešna za uklanjanje širokog opsega potencijalnih zagađujućih materija i veoma pogodna u procesima pripreme vode za piće i procesima obrade industrijskih otpadnih voda. U radu je proučavan kompleksirajuće-mikrofiltracioni proces za uklanjanje jona olova. Mikrofiltracija je membranska tehnika koja se vrlo uspešno koristi za koncentrisanje i frakcionisanje rastvora makromolekula (proteina, poliaminokiselina i viših šećera). Poznato je da se ovom tehnikom ne mogu ukloniti joni teških metala iz vode. Međutim, ukoliko se joni teških metala vežu sa makromolekulima nekih od navedenih jedinjenja, onda se ova metoda može uspešno primenjivati. Cilj rada je bio da se na modelu otpadne vode, koja sadrži jone olova, odredi optimalni odnos koncentracije kompleksirajućeg sredstva i metala kao i optimalna pH vrednost rastvora. Mikrofiltracija je vršena u ćeliji sa mešanjem. Kao kompleksirajuće sredstvo izabrana je dietilaminoetil celuloza. Separacija formiranih kompleksa je vršena na Versapor mikrofiltracionim membranama. Koncentracija jona metala posle mikrofiltracije je određena atomskom apsorpcionom spektroskopijom. Ispitani su uticaji količine kompleksirajućeg sredstva, koncentracije jona metala, pH vrednosti rastvora i radnog pritiska na fluks i koeficijent zadržavanja. Eksperimentalni rezultati su pokazali značajan uticaj pH na koeficijent zadržavanja. Povećanje pH kao i količine kompleksirajućeg sredstva omogućili su postizanje veoma visokog koeficijenta zadržavanja jona olova od 99%.
PB  - Association of Chemical Engineers of Serbia
T2  - Hemijska industrija
T1  - Effects of operating parameters on efficiency of lead removal by complexation-microfiltration process
T1  - Uticaj radnih parametara na efikasnost uklanjanja jona olova pomoću kompleksirajuće-mikrofiltracionog procesa
EP  - 467
IS  - 4
SP  - 461
VL  - 66
DO  - 10.2298/HEMIND111122007T
ER  - 
@article{
author = "Trivunac, Katarina and Stevanović, Slavica",
year = "2012",
abstract = "The majority of lead content found in the environment is a result of human activities. Heavy metals can be hazardous because they tend to bioaccumulate. A complexation-microfiltration process for the removal of Pb(II) ions was studied. The aim of microfiltration of the model wastewater containing heavy metal ions was to find an optimum ratio between the concentrations of the complexing agent and metal, and determining the most favorable pH value. The microfiltration experiments were carried out in a stirred dead-end cell. Diethylaminoethyl cellulose (DEAE 23) was selected as the complexing agent. Versapor membranes were used to separate formed polymermetal complex. The concentration of heavy metal ions after microfiltration in aqueous solution was determined using atomic absorption spectroscopy (AAS). Effects on the amount of complexing agent, concentration of metal ion, pH value and operating pressure on the flux, J, and rejection coefficient, R, were investigated. Experimental results indicate that the pH of the solution has considerable influence on the rejection coefficient. An increase in pH and the amount of complexing agents enabled us to obtain a very high retention coefficient (99%)., Industrijske otpadne vode ne mogu se prečistiti konvencionalnim postupcima za prečišćavanje vode jer sadrže jone metala, posebno toksičnih, teških metala, kao i druga hemijska jedinjenja koja su biološki nerazgradiva, što destruktivno deluje na mikroorganizme koji su aktivni u procesu prirodnog prečišćavanja i procesima sekundarnog prečišćavanja. U zavisnosti od tipa industrije, u industrijskih otpadnim vodama mogu se naći različite štetne, opasne i toksične supstance. Zagađujuće materije se mogu naći u vodi u rastvornom obliku, u obliku jona ili molekula, koloida, suspenzija i mogu biti adsorbovane na čvrstim telima. Da bi se rešili novi izazovi i bolje iskoristili ekonomski izvori, različite tehnologije su predložene, testirane i primenjene u procesu obrade vode. Među njima, tehnologija membranske filtracije se pokazala veoma uspešna za uklanjanje širokog opsega potencijalnih zagađujućih materija i veoma pogodna u procesima pripreme vode za piće i procesima obrade industrijskih otpadnih voda. U radu je proučavan kompleksirajuće-mikrofiltracioni proces za uklanjanje jona olova. Mikrofiltracija je membranska tehnika koja se vrlo uspešno koristi za koncentrisanje i frakcionisanje rastvora makromolekula (proteina, poliaminokiselina i viših šećera). Poznato je da se ovom tehnikom ne mogu ukloniti joni teških metala iz vode. Međutim, ukoliko se joni teških metala vežu sa makromolekulima nekih od navedenih jedinjenja, onda se ova metoda može uspešno primenjivati. Cilj rada je bio da se na modelu otpadne vode, koja sadrži jone olova, odredi optimalni odnos koncentracije kompleksirajućeg sredstva i metala kao i optimalna pH vrednost rastvora. Mikrofiltracija je vršena u ćeliji sa mešanjem. Kao kompleksirajuće sredstvo izabrana je dietilaminoetil celuloza. Separacija formiranih kompleksa je vršena na Versapor mikrofiltracionim membranama. Koncentracija jona metala posle mikrofiltracije je određena atomskom apsorpcionom spektroskopijom. Ispitani su uticaji količine kompleksirajućeg sredstva, koncentracije jona metala, pH vrednosti rastvora i radnog pritiska na fluks i koeficijent zadržavanja. Eksperimentalni rezultati su pokazali značajan uticaj pH na koeficijent zadržavanja. Povećanje pH kao i količine kompleksirajućeg sredstva omogućili su postizanje veoma visokog koeficijenta zadržavanja jona olova od 99%.",
publisher = "Association of Chemical Engineers of Serbia",
journal = "Hemijska industrija",
title = "Effects of operating parameters on efficiency of lead removal by complexation-microfiltration process, Uticaj radnih parametara na efikasnost uklanjanja jona olova pomoću kompleksirajuće-mikrofiltracionog procesa",
pages = "467-461",
number = "4",
volume = "66",
doi = "10.2298/HEMIND111122007T"
}
Trivunac, K.,& Stevanović, S.. (2012). Effects of operating parameters on efficiency of lead removal by complexation-microfiltration process. in Hemijska industrija
Association of Chemical Engineers of Serbia., 66(4), 461-467.
https://doi.org/10.2298/HEMIND111122007T
Trivunac K, Stevanović S. Effects of operating parameters on efficiency of lead removal by complexation-microfiltration process. in Hemijska industrija. 2012;66(4):461-467.
doi:10.2298/HEMIND111122007T .
Trivunac, Katarina, Stevanović, Slavica, "Effects of operating parameters on efficiency of lead removal by complexation-microfiltration process" in Hemijska industrija, 66, no. 4 (2012):461-467,
https://doi.org/10.2298/HEMIND111122007T . .
3
3
4

Zinc removal from wastewater by a complexation-microfiltration process

Trivunac, Katarina; Sekulić, Zoran; Stevanović, Slavica

(Serbian Chemical Society, Belgrade, 2012)

TY  - JOUR
AU  - Trivunac, Katarina
AU  - Sekulić, Zoran
AU  - Stevanović, Slavica
PY  - 2012
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2088
AB  - Due to its wide industrial applications, zinc has become an important contaminant in aquatic environments since it is a toxic heavy metal and some of its compounds, such as zinc arsenate and zinc cyanide, may be extremely hazardous. Therefore, there is a growing need to develop simple methods capable of separating and recovering trace zinc from environmental waters. Nowadays, ultra- and microfiltration methods for trace metals removal from waters by the addition of a water-soluble polymer into the aqueous solutions have become a significant area of research. The choice of water-soluble macroligands remains important for the development of this technology. Sodium carboxymethyl cellulose (Na-CMC) was selected as the complexing agent. The microfiltration experiments were performed in a stirred dead-end cell. Versapor membranes were used to separate the formed polymer-metal complex. The concentration of heavy metal ions after microfiltration in aqueous solution was determined using atomic absorption spectroscopy (AAS). The effects of the amount of complexing agent, pH value, type of anion, ionic strength and operating pressure on the flux (J) and rejection coefficient (R) were investigated. Experimental results indicate a considerable influence of the pH, ionic strength and type of anion on the rejection coefficient, while the effect of the amount of the complexing agent was relatively insignificant. The Na-CMC used in the research proved very effective, which is supported by the high rejection coefficients obtained (99%).
AB  - Kao rezultat njegove široke industrijske primene, cink i njegova jedinjenja su postali značajne zagađujuće materije vodenih resursa. Zbog toga je postalo neophodno razvijati nove metode za njihovo uklanjanje, koje bi bile efikasne, jednostavne i neškodljive po životnu sredinu. Među njima, metoda membranske filtracije se pokazala kao veoma uspešna za uklanjanje različitih zagađujućih materija, posebno u kombinaciji sa makromolekulima. Veliki broj istraživanja usmeren je na izbor selektivnog i specifičnog makromolekula. U radu je proučavan kompleksirajuće-filtracioni proces za uklanjanje jona cinka pomoću natrijum-karboksimetil celuloze. Mikrofiltracija je vršena u ćeliji sa mešanjem. Separacija formiranih kompleksa je vršena na Versapor mikrofiltracionim membranama. Koncentracija jona metala posle mikrofiltracije je određena atomskom apsorpcionom spektroskopijom. Ispitani su uticaji količine kompleksirajućeg sredstva, pH vrednosti rastvora, radnog pritiska, jonske jačine i anjona na fluks i koeficijent zadržavanja. Eksperimentalni rezultati su pokazali značajan uticaj pH, jonske jačine i anjona na koeficijent zadržavanja, dok koncentracija kompleksirajućeg sredstva nije imala značajan uticaj na proces. Natrijum karboksimetil celuloza se pokazala kao uspešno sredstvo za uklanjanje jona cinka što se može zaključiti na osnovu postignutog veoma visokog koeficijenta zadržavanja jona cinka od 99 %.
PB  - Serbian Chemical Society, Belgrade
T2  - Journal of the Serbian Chemical Society
T1  - Zinc removal from wastewater by a complexation-microfiltration process
T1  - Uklanjanje cinka iz otpadnih voda kompleksirajuće-mikrofiltracionim procesom
EP  - 1670
IS  - 11
SP  - 1661
VL  - 77
UR  - https://hdl.handle.net/21.15107/rcub_technorep_2088
ER  - 
@article{
author = "Trivunac, Katarina and Sekulić, Zoran and Stevanović, Slavica",
year = "2012",
abstract = "Due to its wide industrial applications, zinc has become an important contaminant in aquatic environments since it is a toxic heavy metal and some of its compounds, such as zinc arsenate and zinc cyanide, may be extremely hazardous. Therefore, there is a growing need to develop simple methods capable of separating and recovering trace zinc from environmental waters. Nowadays, ultra- and microfiltration methods for trace metals removal from waters by the addition of a water-soluble polymer into the aqueous solutions have become a significant area of research. The choice of water-soluble macroligands remains important for the development of this technology. Sodium carboxymethyl cellulose (Na-CMC) was selected as the complexing agent. The microfiltration experiments were performed in a stirred dead-end cell. Versapor membranes were used to separate the formed polymer-metal complex. The concentration of heavy metal ions after microfiltration in aqueous solution was determined using atomic absorption spectroscopy (AAS). The effects of the amount of complexing agent, pH value, type of anion, ionic strength and operating pressure on the flux (J) and rejection coefficient (R) were investigated. Experimental results indicate a considerable influence of the pH, ionic strength and type of anion on the rejection coefficient, while the effect of the amount of the complexing agent was relatively insignificant. The Na-CMC used in the research proved very effective, which is supported by the high rejection coefficients obtained (99%)., Kao rezultat njegove široke industrijske primene, cink i njegova jedinjenja su postali značajne zagađujuće materije vodenih resursa. Zbog toga je postalo neophodno razvijati nove metode za njihovo uklanjanje, koje bi bile efikasne, jednostavne i neškodljive po životnu sredinu. Među njima, metoda membranske filtracije se pokazala kao veoma uspešna za uklanjanje različitih zagađujućih materija, posebno u kombinaciji sa makromolekulima. Veliki broj istraživanja usmeren je na izbor selektivnog i specifičnog makromolekula. U radu je proučavan kompleksirajuće-filtracioni proces za uklanjanje jona cinka pomoću natrijum-karboksimetil celuloze. Mikrofiltracija je vršena u ćeliji sa mešanjem. Separacija formiranih kompleksa je vršena na Versapor mikrofiltracionim membranama. Koncentracija jona metala posle mikrofiltracije je određena atomskom apsorpcionom spektroskopijom. Ispitani su uticaji količine kompleksirajućeg sredstva, pH vrednosti rastvora, radnog pritiska, jonske jačine i anjona na fluks i koeficijent zadržavanja. Eksperimentalni rezultati su pokazali značajan uticaj pH, jonske jačine i anjona na koeficijent zadržavanja, dok koncentracija kompleksirajućeg sredstva nije imala značajan uticaj na proces. Natrijum karboksimetil celuloza se pokazala kao uspešno sredstvo za uklanjanje jona cinka što se može zaključiti na osnovu postignutog veoma visokog koeficijenta zadržavanja jona cinka od 99 %.",
publisher = "Serbian Chemical Society, Belgrade",
journal = "Journal of the Serbian Chemical Society",
title = "Zinc removal from wastewater by a complexation-microfiltration process, Uklanjanje cinka iz otpadnih voda kompleksirajuće-mikrofiltracionim procesom",
pages = "1670-1661",
number = "11",
volume = "77",
url = "https://hdl.handle.net/21.15107/rcub_technorep_2088"
}
Trivunac, K., Sekulić, Z.,& Stevanović, S.. (2012). Zinc removal from wastewater by a complexation-microfiltration process. in Journal of the Serbian Chemical Society
Serbian Chemical Society, Belgrade., 77(11), 1661-1670.
https://hdl.handle.net/21.15107/rcub_technorep_2088
Trivunac K, Sekulić Z, Stevanović S. Zinc removal from wastewater by a complexation-microfiltration process. in Journal of the Serbian Chemical Society. 2012;77(11):1661-1670.
https://hdl.handle.net/21.15107/rcub_technorep_2088 .
Trivunac, Katarina, Sekulić, Zoran, Stevanović, Slavica, "Zinc removal from wastewater by a complexation-microfiltration process" in Journal of the Serbian Chemical Society, 77, no. 11 (2012):1661-1670,
https://hdl.handle.net/21.15107/rcub_technorep_2088 .
8
14

Effects of operating parameters on efficiency of cadmium and zinc removal by the complexation-filtration process

Trivunac, Katarina; Stevanović, Slavica

(Elsevier, Amsterdam, 2006)

TY  - JOUR
AU  - Trivunac, Katarina
AU  - Stevanović, Slavica
PY  - 2006
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/948
AB  - A process for purifying wastewaters containing heavy and toxic metals such as cadmium and zinc by the complexation-filtration process was studied. From previous research, diethylaminoethyl cellulose (DEAE23) was selected as the complexing agent. The experiments were carried out in a Millipore ultrafiltration stirred dead-end cell at room temperature. Factors such as pH, concentration of the ligand and of the metal ion, membrane pore size and applied pressure were investigated. Experimental results indicate a considerable influence of the pH of the solution on the rejection coefficient. Also, the complexing ability of DEAE23 towards zinc ions is higher than towards cadmium ions. An increase of the concentration of the complexing agent at constant initial concentration of metal increases metal retention. An increase of initial metal concentration at constant concentration of the complexing agent decreases metal retention. When both metals are present in the same solution, retention decreases compared to single metal solutions, which is more significant in the case of cadmium ions.
PB  - Elsevier, Amsterdam
T2  - Desalination
T1  - Effects of operating parameters on efficiency of cadmium and zinc removal by the complexation-filtration process
EP  - 287
IS  - 1-3
SP  - 282
VL  - 198
DO  - 10.1016/j.desal.2006.01.028
ER  - 
@article{
author = "Trivunac, Katarina and Stevanović, Slavica",
year = "2006",
abstract = "A process for purifying wastewaters containing heavy and toxic metals such as cadmium and zinc by the complexation-filtration process was studied. From previous research, diethylaminoethyl cellulose (DEAE23) was selected as the complexing agent. The experiments were carried out in a Millipore ultrafiltration stirred dead-end cell at room temperature. Factors such as pH, concentration of the ligand and of the metal ion, membrane pore size and applied pressure were investigated. Experimental results indicate a considerable influence of the pH of the solution on the rejection coefficient. Also, the complexing ability of DEAE23 towards zinc ions is higher than towards cadmium ions. An increase of the concentration of the complexing agent at constant initial concentration of metal increases metal retention. An increase of initial metal concentration at constant concentration of the complexing agent decreases metal retention. When both metals are present in the same solution, retention decreases compared to single metal solutions, which is more significant in the case of cadmium ions.",
publisher = "Elsevier, Amsterdam",
journal = "Desalination",
title = "Effects of operating parameters on efficiency of cadmium and zinc removal by the complexation-filtration process",
pages = "287-282",
number = "1-3",
volume = "198",
doi = "10.1016/j.desal.2006.01.028"
}
Trivunac, K.,& Stevanović, S.. (2006). Effects of operating parameters on efficiency of cadmium and zinc removal by the complexation-filtration process. in Desalination
Elsevier, Amsterdam., 198(1-3), 282-287.
https://doi.org/10.1016/j.desal.2006.01.028
Trivunac K, Stevanović S. Effects of operating parameters on efficiency of cadmium and zinc removal by the complexation-filtration process. in Desalination. 2006;198(1-3):282-287.
doi:10.1016/j.desal.2006.01.028 .
Trivunac, Katarina, Stevanović, Slavica, "Effects of operating parameters on efficiency of cadmium and zinc removal by the complexation-filtration process" in Desalination, 198, no. 1-3 (2006):282-287,
https://doi.org/10.1016/j.desal.2006.01.028 . .
16
18
19

Removal of heavy metal ions from water by complexation-assisted ultrafiltration

Trivunac, Katarina; Stevanović, Slavica

(Pergamon-Elsevier Science Ltd, Oxford, 2006)

TY  - JOUR
AU  - Trivunac, Katarina
AU  - Stevanović, Slavica
PY  - 2006
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/991
AB  - Toxic heavy metals in air, soil and water are global problems that are growing threat to the environment. Therefore, the removal and separation of toxic and environmentally relevant heavy metal ions are a technological challenge with respect to industrial and environmental application. A promising process for the removal of heavy metal ions from aqueous solutions involves bonding the metals to a bonding agent (such as macromolecular species), and then separating the loaded agents from wastewater by separation processes such as membrane filtration. The choice of water-soluble macroligands remains important for developing this technology. The effects of type of complexing agent, pH value and applied pressure on retention coefficients of Zn(II) and Cd(II) complexes were investigated. At best operating conditions (pH = 9.0, p = 300 kPa) using diethylaminoethyl cellulose, the removal of Cd2+ and Zn2+ was more than 95% and 99%, respectively.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Chemosphere
T1  - Removal of heavy metal ions from water by complexation-assisted ultrafiltration
EP  - 491
IS  - 3
SP  - 486
VL  - 64
DO  - 10.1016/j.chemosphere.2005.11.073
ER  - 
@article{
author = "Trivunac, Katarina and Stevanović, Slavica",
year = "2006",
abstract = "Toxic heavy metals in air, soil and water are global problems that are growing threat to the environment. Therefore, the removal and separation of toxic and environmentally relevant heavy metal ions are a technological challenge with respect to industrial and environmental application. A promising process for the removal of heavy metal ions from aqueous solutions involves bonding the metals to a bonding agent (such as macromolecular species), and then separating the loaded agents from wastewater by separation processes such as membrane filtration. The choice of water-soluble macroligands remains important for developing this technology. The effects of type of complexing agent, pH value and applied pressure on retention coefficients of Zn(II) and Cd(II) complexes were investigated. At best operating conditions (pH = 9.0, p = 300 kPa) using diethylaminoethyl cellulose, the removal of Cd2+ and Zn2+ was more than 95% and 99%, respectively.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Chemosphere",
title = "Removal of heavy metal ions from water by complexation-assisted ultrafiltration",
pages = "491-486",
number = "3",
volume = "64",
doi = "10.1016/j.chemosphere.2005.11.073"
}
Trivunac, K.,& Stevanović, S.. (2006). Removal of heavy metal ions from water by complexation-assisted ultrafiltration. in Chemosphere
Pergamon-Elsevier Science Ltd, Oxford., 64(3), 486-491.
https://doi.org/10.1016/j.chemosphere.2005.11.073
Trivunac K, Stevanović S. Removal of heavy metal ions from water by complexation-assisted ultrafiltration. in Chemosphere. 2006;64(3):486-491.
doi:10.1016/j.chemosphere.2005.11.073 .
Trivunac, Katarina, Stevanović, Slavica, "Removal of heavy metal ions from water by complexation-assisted ultrafiltration" in Chemosphere, 64, no. 3 (2006):486-491,
https://doi.org/10.1016/j.chemosphere.2005.11.073 . .
174
138
182

Copper Separation from Aqueous Effluents by Liquid Membrane Pertraction

Onjia, Antonije; Stevanović, Slavica; Rajaković, Ljubinka; Mitrović, Milan; Korenmann, Yakov I.

(1996)

TY  - CONF
AU  - Onjia, Antonije
AU  - Stevanović, Slavica
AU  - Rajaković, Ljubinka
AU  - Mitrović, Milan
AU  - Korenmann, Yakov I.
PY  - 1996
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6536
AB  - In this paper the feasibility of applying liquid membrane pertraction to the copper
recovery from aqueous effluents has been examined. A continuos laboratory-scale
hollow fiber-in-fiber type membrane pertractor was constructed to solve a variety
of problems encountered in the conventional solvent extraction equipment.
Copper-ions present in the feed solution were transferred through an organic
liquid containing 2-hydroxy-5-nonylacetophenone oxim in kerosene and
concentrated in an acid solution on the strip side. The operational factors such as
flow rates of the three liquid streams were considered. The overall mass transfer
rate is greatly influenced by the resistances in the aqueous film boundary layer on
the feed side, and by the rate of interfacial reaction taking place at organic-strip
interface.
C3  - International Ecological Congress, Voronezh, Russia, September 22-28
T1  - Copper Separation from Aqueous Effluents by Liquid Membrane Pertraction
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6536
ER  - 
@conference{
author = "Onjia, Antonije and Stevanović, Slavica and Rajaković, Ljubinka and Mitrović, Milan and Korenmann, Yakov I.",
year = "1996",
abstract = "In this paper the feasibility of applying liquid membrane pertraction to the copper
recovery from aqueous effluents has been examined. A continuos laboratory-scale
hollow fiber-in-fiber type membrane pertractor was constructed to solve a variety
of problems encountered in the conventional solvent extraction equipment.
Copper-ions present in the feed solution were transferred through an organic
liquid containing 2-hydroxy-5-nonylacetophenone oxim in kerosene and
concentrated in an acid solution on the strip side. The operational factors such as
flow rates of the three liquid streams were considered. The overall mass transfer
rate is greatly influenced by the resistances in the aqueous film boundary layer on
the feed side, and by the rate of interfacial reaction taking place at organic-strip
interface.",
journal = "International Ecological Congress, Voronezh, Russia, September 22-28",
title = "Copper Separation from Aqueous Effluents by Liquid Membrane Pertraction",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6536"
}
Onjia, A., Stevanović, S., Rajaković, L., Mitrović, M.,& Korenmann, Y. I.. (1996). Copper Separation from Aqueous Effluents by Liquid Membrane Pertraction. in International Ecological Congress, Voronezh, Russia, September 22-28.
https://hdl.handle.net/21.15107/rcub_technorep_6536
Onjia A, Stevanović S, Rajaković L, Mitrović M, Korenmann YI. Copper Separation from Aqueous Effluents by Liquid Membrane Pertraction. in International Ecological Congress, Voronezh, Russia, September 22-28. 1996;.
https://hdl.handle.net/21.15107/rcub_technorep_6536 .
Onjia, Antonije, Stevanović, Slavica, Rajaković, Ljubinka, Mitrović, Milan, Korenmann, Yakov I., "Copper Separation from Aqueous Effluents by Liquid Membrane Pertraction" in International Ecological Congress, Voronezh, Russia, September 22-28 (1996),
https://hdl.handle.net/21.15107/rcub_technorep_6536 .

Recovery of Indium in a Hollow Fiber Membrane Pertractor

Onjia, Antonije; Stevanović, Slavica; Rajaković, Ljubinka; Mitrović, Milan; Korenmann, Yakov I.

(1996)

TY  - CONF
AU  - Onjia, Antonije
AU  - Stevanović, Slavica
AU  - Rajaković, Ljubinka
AU  - Mitrović, Milan
AU  - Korenmann, Yakov I.
PY  - 1996
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6535
AB  - In the present work, the recovery of indium from sulfate media using a continuos-type membrane
pertractor with hollow fiber geometry was investigated as a study of the feasibility of the industrial
application of this pertraction technique. Separation and enrichment of indium with di-(2-
ethylhexyl) phosphoric acid in kerosene in hollow fiber-in-fiber membrane pertractor were carried
out simultaneously. A series of experiments on the pertraction of indium was performed to
investigated the effect of various experimental conditions on the permeation rate. The mechanism
of indium pertraction through three-phase membrane system can be explained by diffusion model
accompanied by two interfacial reactions.
C3  - International Ecological Congress, Voronezh, Russia, September 22-28
T1  - Recovery of Indium in a Hollow Fiber Membrane Pertractor
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6535
ER  - 
@conference{
author = "Onjia, Antonije and Stevanović, Slavica and Rajaković, Ljubinka and Mitrović, Milan and Korenmann, Yakov I.",
year = "1996",
abstract = "In the present work, the recovery of indium from sulfate media using a continuos-type membrane
pertractor with hollow fiber geometry was investigated as a study of the feasibility of the industrial
application of this pertraction technique. Separation and enrichment of indium with di-(2-
ethylhexyl) phosphoric acid in kerosene in hollow fiber-in-fiber membrane pertractor were carried
out simultaneously. A series of experiments on the pertraction of indium was performed to
investigated the effect of various experimental conditions on the permeation rate. The mechanism
of indium pertraction through three-phase membrane system can be explained by diffusion model
accompanied by two interfacial reactions.",
journal = "International Ecological Congress, Voronezh, Russia, September 22-28",
title = "Recovery of Indium in a Hollow Fiber Membrane Pertractor",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6535"
}
Onjia, A., Stevanović, S., Rajaković, L., Mitrović, M.,& Korenmann, Y. I.. (1996). Recovery of Indium in a Hollow Fiber Membrane Pertractor. in International Ecological Congress, Voronezh, Russia, September 22-28.
https://hdl.handle.net/21.15107/rcub_technorep_6535
Onjia A, Stevanović S, Rajaković L, Mitrović M, Korenmann YI. Recovery of Indium in a Hollow Fiber Membrane Pertractor. in International Ecological Congress, Voronezh, Russia, September 22-28. 1996;.
https://hdl.handle.net/21.15107/rcub_technorep_6535 .
Onjia, Antonije, Stevanović, Slavica, Rajaković, Ljubinka, Mitrović, Milan, Korenmann, Yakov I., "Recovery of Indium in a Hollow Fiber Membrane Pertractor" in International Ecological Congress, Voronezh, Russia, September 22-28 (1996),
https://hdl.handle.net/21.15107/rcub_technorep_6535 .

Pertraction of Solutes in Double Hollow-Fiber Membrane Pertractors, In book: Chemical and Process Engineering-IcheaP-2

Stevanović, Slavica; Onjia, Antonije; Mitrović, Milan

(AIDIC Associazione Italiana di Ingegneria Chimica, 1995)

TY  - CONF
AU  - Stevanović, Slavica
AU  - Onjia, Antonije
AU  - Mitrović, Milan
PY  - 1995
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6544
PB  - AIDIC Associazione Italiana  di Ingegneria Chimica
C3  - AIDIC Conference Series
T1  - Pertraction of Solutes in Double Hollow-Fiber Membrane Pertractors, In book: Chemical and Process Engineering-IcheaP-2
EP  - 446
SP  - 443
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6544
ER  - 
@conference{
author = "Stevanović, Slavica and Onjia, Antonije and Mitrović, Milan",
year = "1995",
publisher = "AIDIC Associazione Italiana  di Ingegneria Chimica",
journal = "AIDIC Conference Series",
title = "Pertraction of Solutes in Double Hollow-Fiber Membrane Pertractors, In book: Chemical and Process Engineering-IcheaP-2",
pages = "446-443",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6544"
}
Stevanović, S., Onjia, A.,& Mitrović, M.. (1995). Pertraction of Solutes in Double Hollow-Fiber Membrane Pertractors, In book: Chemical and Process Engineering-IcheaP-2. in AIDIC Conference Series
AIDIC Associazione Italiana  di Ingegneria Chimica., 443-446.
https://hdl.handle.net/21.15107/rcub_technorep_6544
Stevanović S, Onjia A, Mitrović M. Pertraction of Solutes in Double Hollow-Fiber Membrane Pertractors, In book: Chemical and Process Engineering-IcheaP-2. in AIDIC Conference Series. 1995;:443-446.
https://hdl.handle.net/21.15107/rcub_technorep_6544 .
Stevanović, Slavica, Onjia, Antonije, Mitrović, Milan, "Pertraction of Solutes in Double Hollow-Fiber Membrane Pertractors, In book: Chemical and Process Engineering-IcheaP-2" in AIDIC Conference Series (1995):443-446,
https://hdl.handle.net/21.15107/rcub_technorep_6544 .

Comparative study of arsenic removal from drinking water (precipitation, sorption and membrane extraction treatments)

Stevanović, Slavica; Onjia, Antonije; Mitrović, Milan

(Nauka Publishing House, St. Petersburg, 1994)

TY  - JOUR
AU  - Stevanović, Slavica
AU  - Onjia, Antonije
AU  - Mitrović, Milan
PY  - 1994
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6554
PB  - Nauka Publishing House, St. Petersburg
T2  - Zhurnal Pikladnoi Khimii
T1  - Comparative study of arsenic removal from drinking water (precipitation, sorption and membrane extraction treatments)
SP  - 1743
VL  - 67
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6554
ER  - 
@article{
author = "Stevanović, Slavica and Onjia, Antonije and Mitrović, Milan",
year = "1994",
publisher = "Nauka Publishing House, St. Petersburg",
journal = "Zhurnal Pikladnoi Khimii",
title = "Comparative study of arsenic removal from drinking water (precipitation, sorption and membrane extraction treatments)",
pages = "1743",
volume = "67",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6554"
}
Stevanović, S., Onjia, A.,& Mitrović, M.. (1994). Comparative study of arsenic removal from drinking water (precipitation, sorption and membrane extraction treatments). in Zhurnal Pikladnoi Khimii
Nauka Publishing House, St. Petersburg., 67, 1743.
https://hdl.handle.net/21.15107/rcub_technorep_6554
Stevanović S, Onjia A, Mitrović M. Comparative study of arsenic removal from drinking water (precipitation, sorption and membrane extraction treatments). in Zhurnal Pikladnoi Khimii. 1994;67:1743.
https://hdl.handle.net/21.15107/rcub_technorep_6554 .
Stevanović, Slavica, Onjia, Antonije, Mitrović, Milan, "Comparative study of arsenic removal from drinking water (precipitation, sorption and membrane extraction treatments)" in Zhurnal Pikladnoi Khimii, 67 (1994):1743,
https://hdl.handle.net/21.15107/rcub_technorep_6554 .