TY  - JOUR
AU  - Popović, Ana
AU  - Milićević, Sonja
AU  - Milošević, Vladan
AU  - Ivošević, Branislav
AU  - Carapić, Jelena
AU  - Jovanović, Vladimir
AU  - Povrenović, Dragan
PY  - 2019
UR  - https://ritnms.itnms.ac.rs/handle/123456789/520
AB  - Industrial wastewater contains recalcitrant organic compounds with a very complex chemical structure, built of molecules with long chains of carbon atoms and attached different functional groups. Chemical or biological treatments used for removal of these compounds are being replaced with more efficient non-commercial wastewater treatments. Advanced oxidation processes overcome limitations of conventional methods regarding formation of by-products during degradation of recalcitrant organic compounds. The Fenton process, or use of the Fenton's reagent, has became one of the most utilized processes due to simplicity, economy and accessible amounts of ferrous iron and hydrogen-peroxide, which are used in the process. In specific, the Fenton's reagent is a catalytic-oxidative mixture of these two components. The ferrous iron Fe2+ initiates and catalyzes decomposition of H2O2, resulting in generation of hydroxyl radicals, which are the main radical species in the process able to detoxify several organic pollutants by oxidation. In addition, other mechanisms besides formation of hydroxyl radicals may occur during the Fenton process and participate in degradation of target pollutants. Generally, the treatment efficiency relies upon the physical and chemical properties of target pollutants and the process operating conditions. The main disadvantage of the Fenton process is production of sludge formed by iron hydroxide at certain pH values. An alternative solution for this problem is application of this process in fluidized bed reactors. This paper presents an overview of Fenton and photo-Fenton processes in dispersed systems for removal of different industrial wastewater pollutants. The most important process parameters, required for efficient degradation of recalcitrant organic compounds are also described, such as the catalyst type, pH value, temperature, H2O2 concentration and retention time. Strict control of Fenton process parameters in fluidized bed reactors at desired values can bring these systems to the commercial use.
PB  - Savez hemijskih inženjera, Beograd
T2  - Hemijska industrija
T1  - Fenton process in dispersed systems for industrial wastewater treatment
EP  - 62
IS  - 1
SP  - 47
VL  - 73
DO  - 10.2298/HEMIND181019005P
UR  - conv_844
ER  - 

@article{
author = "Popović, Ana and Milićević, Sonja and Milošević, Vladan and Ivošević, Branislav and Carapić, Jelena and Jovanović, Vladimir and Povrenović, Dragan",
year = "2019",
abstract = "Industrial wastewater contains recalcitrant organic compounds with a very complex chemical structure, built of molecules with long chains of carbon atoms and attached different functional groups. Chemical or biological treatments used for removal of these compounds are being replaced with more efficient non-commercial wastewater treatments. Advanced oxidation processes overcome limitations of conventional methods regarding formation of by-products during degradation of recalcitrant organic compounds. The Fenton process, or use of the Fenton's reagent, has became one of the most utilized processes due to simplicity, economy and accessible amounts of ferrous iron and hydrogen-peroxide, which are used in the process. In specific, the Fenton's reagent is a catalytic-oxidative mixture of these two components. The ferrous iron Fe2+ initiates and catalyzes decomposition of H2O2, resulting in generation of hydroxyl radicals, which are the main radical species in the process able to detoxify several organic pollutants by oxidation. In addition, other mechanisms besides formation of hydroxyl radicals may occur during the Fenton process and participate in degradation of target pollutants. Generally, the treatment efficiency relies upon the physical and chemical properties of target pollutants and the process operating conditions. The main disadvantage of the Fenton process is production of sludge formed by iron hydroxide at certain pH values. An alternative solution for this problem is application of this process in fluidized bed reactors. This paper presents an overview of Fenton and photo-Fenton processes in dispersed systems for removal of different industrial wastewater pollutants. The most important process parameters, required for efficient degradation of recalcitrant organic compounds are also described, such as the catalyst type, pH value, temperature, H2O2 concentration and retention time. Strict control of Fenton process parameters in fluidized bed reactors at desired values can bring these systems to the commercial use.",
publisher = "Savez hemijskih inženjera, Beograd",
journal = "Hemijska industrija",
title = "Fenton process in dispersed systems for industrial wastewater treatment",
pages = "62-47",
number = "1",
volume = "73",
doi = "10.2298/HEMIND181019005P",
url = "conv_844"
}

Popović, A., Milićević, S., Milošević, V., Ivošević, B., Carapić, J., Jovanović, V.,& Povrenović, D.. (2019). Fenton process in dispersed systems for industrial wastewater treatment. in Hemijska industrija
Savez hemijskih inženjera, Beograd., 73(1), 47-62.
https://doi.org/10.2298/HEMIND181019005P
conv_844

Popović A, Milićević S, Milošević V, Ivošević B, Carapić J, Jovanović V, Povrenović D. Fenton process in dispersed systems for industrial wastewater treatment. in Hemijska industrija. 2019;73(1):47-62.
doi:10.2298/HEMIND181019005P
conv_844 .

Popović, Ana, Milićević, Sonja, Milošević, Vladan, Ivošević, Branislav, Carapić, Jelena, Jovanović, Vladimir, Povrenović, Dragan, "Fenton process in dispersed systems for industrial wastewater treatment" in Hemijska industrija, 73, no. 1 (2019):47-62,
https://doi.org/10.2298/HEMIND181019005P .,
conv_844 .

TY  - CONF
AU  - Kovačina, Jovanka
AU  - Milošević, Milena
AU  - Božić, Aleksandra
AU  - Jovanović, Aleksandar
AU  - Marinković, Aleksandar
AU  - Onjia, Antonije
AU  - Povrenović, Dragan
PY  - 2019
UR  - https://ritnms.itnms.ac.rs/handle/123456789/1027
AB  - Usled razvoja industrije i rastom populacije tokom poslednjih godina javljaju se
problemi u vezi sa otpadnim vodama iz proizvodnje koje je neophodno rešavati na ekološki i
ekonomičan način. Sve otpadne vode iz postrojenja bez obzira kako su nastale sadrže štetne
materije koje mogu da imaju i određen stepen toksičnih primesa, moraju se prečistiti ako njihov
kvalitet ne odgovara zakonskim okvirima. Svrha tretmana otpadnih voda je uklanjanje štetnih
materija čime se postiže smanjnje stepena njene zagađenosti, a istovremeno se ostvaruje i određen
ekonomski i ekološki efekat, stoga je u ovom radu izvršeno prečišćavanje otpadne vode postupkom
taloženja upotrebom kalcijum-oksida u cilju uklanjanja koloidnih materija i teških metala. Većina
zagađujućih materija su organskog porekla i njihovo ukljanjanje vršiće se primenom naprednih
oksidacionih procesa korišćenjem ozona i ozona u kombinaciji sa ultrazvukom u cilju postizanja
kvaliteta vode koji odgovara zakonskoj regulativi. Proces prečišćavanja će se optimizovati u
odnosu na tehnološki postupak, koncentraciju, vreme tretmana i količinu primenjenog oksidacionog
sredstva. Stepen zagađenosti vode organskim jedinjenjima će se određivati na osnovu merenja
HPK, BPK i koncentracije teških metala (olovo, gvožđe, hrom, bakar, cink, aluminijum).
AB  - Due to the development of industry and population growth during the in recent years,
there are problems with wastewater from production that needs to be addressed in an
environmentally and economical way. All wastewaters from industry, no matter how they are
created, contain harmful substances that may have some degree of toxicity, must be treated if their
quality does not meet the legal requirements. The purpose of wastewater treatment is to remove
harmful substances, thereby reducing its pollution level, and at the same time, it also has a certain
economic and environmental effect. Therefore, wastewater treatment was carried out in this work by precipitation using calcium oxide to remove colloidal substances and heavy metals. Most
pollutants are of organic origin and their removal will be carried in this work out using advanced
oxidation processes using ozone, and ozone in combination with ultrasound to achieve water
quality that complies with the law. The purification process will be optimized with respect to,
method, time and amount of oxidizing agent applied. The degree of pollution of water by organic
compounds will be determined on the basis of measurements of HPK, BOD and the concentration of
heavy metals (lead, ferrum, chromium, copper, zinc, aluminum).
PB  - Beograd : Beogradska politehnika
C3  - Peti naučno-stručni skup Politehnika
T1  - Prečišćavanja otpadnih voda primenom ozonizacije
EP  - 147
SP  - 142
ER  - 

@conference{
author = "Kovačina, Jovanka and Milošević, Milena and Božić, Aleksandra and Jovanović, Aleksandar and Marinković, Aleksandar and Onjia, Antonije and Povrenović, Dragan",
year = "2019",
abstract = "Usled razvoja industrije i rastom populacije tokom poslednjih godina javljaju se
problemi u vezi sa otpadnim vodama iz proizvodnje koje je neophodno rešavati na ekološki i
ekonomičan način. Sve otpadne vode iz postrojenja bez obzira kako su nastale sadrže štetne
materije koje mogu da imaju i određen stepen toksičnih primesa, moraju se prečistiti ako njihov
kvalitet ne odgovara zakonskim okvirima. Svrha tretmana otpadnih voda je uklanjanje štetnih
materija čime se postiže smanjnje stepena njene zagađenosti, a istovremeno se ostvaruje i određen
ekonomski i ekološki efekat, stoga je u ovom radu izvršeno prečišćavanje otpadne vode postupkom
taloženja upotrebom kalcijum-oksida u cilju uklanjanja koloidnih materija i teških metala. Većina
zagađujućih materija su organskog porekla i njihovo ukljanjanje vršiće se primenom naprednih
oksidacionih procesa korišćenjem ozona i ozona u kombinaciji sa ultrazvukom u cilju postizanja
kvaliteta vode koji odgovara zakonskoj regulativi. Proces prečišćavanja će se optimizovati u
odnosu na tehnološki postupak, koncentraciju, vreme tretmana i količinu primenjenog oksidacionog
sredstva. Stepen zagađenosti vode organskim jedinjenjima će se određivati na osnovu merenja
HPK, BPK i koncentracije teških metala (olovo, gvožđe, hrom, bakar, cink, aluminijum)., Due to the development of industry and population growth during the in recent years,
there are problems with wastewater from production that needs to be addressed in an
environmentally and economical way. All wastewaters from industry, no matter how they are
created, contain harmful substances that may have some degree of toxicity, must be treated if their
quality does not meet the legal requirements. The purpose of wastewater treatment is to remove
harmful substances, thereby reducing its pollution level, and at the same time, it also has a certain
economic and environmental effect. Therefore, wastewater treatment was carried out in this work by precipitation using calcium oxide to remove colloidal substances and heavy metals. Most
pollutants are of organic origin and their removal will be carried in this work out using advanced
oxidation processes using ozone, and ozone in combination with ultrasound to achieve water
quality that complies with the law. The purification process will be optimized with respect to,
method, time and amount of oxidizing agent applied. The degree of pollution of water by organic
compounds will be determined on the basis of measurements of HPK, BOD and the concentration of
heavy metals (lead, ferrum, chromium, copper, zinc, aluminum).",
publisher = "Beograd : Beogradska politehnika",
journal = "Peti naučno-stručni skup Politehnika",
title = "Prečišćavanja otpadnih voda primenom ozonizacije",
pages = "147-142"
}

Kovačina, J., Milošević, M., Božić, A., Jovanović, A., Marinković, A., Onjia, A.,& Povrenović, D.. (2019). Prečišćavanja otpadnih voda primenom ozonizacije. in Peti naučno-stručni skup Politehnika
Beograd : Beogradska politehnika., 142-147.

Kovačina J, Milošević M, Božić A, Jovanović A, Marinković A, Onjia A, Povrenović D. Prečišćavanja otpadnih voda primenom ozonizacije. in Peti naučno-stručni skup Politehnika. 2019;:142-147..

Kovačina, Jovanka, Milošević, Milena, Božić, Aleksandra, Jovanović, Aleksandar, Marinković, Aleksandar, Onjia, Antonije, Povrenović, Dragan, "Prečišćavanja otpadnih voda primenom ozonizacije" in Peti naučno-stručni skup Politehnika (2019):142-147.

TY  - JOUR
AU  - Milićević, Sonja
AU  - Martinović, Sanja
AU  - Milošević, Vladan
AU  - Stojanović, Jovica
AU  - Povrenović, Dragan
PY  - 2018
UR  - https://ritnms.itnms.ac.rs/handle/123456789/462
AB  - Systematic modification of three structurally different minerals (zeolite, mica, and vermiculite) was carried out with the aim of determining the modification mechanism and exposing the hydrophobic surface that can be used as a sorbent for many organic compounds. Mechanism of modification with cationic surfactant depends strongly on the mineral type. In order to identify the influence of aluminosilicates structural differences on the modification process, adsorption experiments with organic matter and water vapor, supplemented with the DTA/TG analysis, were performed. The cation exchange capacity (CEC) value was 1454>560>28meqkg(-1) for zeolite (clinoptilolite), vermiculite, and mica (muscovite), respectively. Despite its CEC value, vermiculite adsorbed three times the amount of organic matter than did clinoptilolite due to the porous structure of zeolite, which acted to limit the adsorption only on the external exchangeable cations. If the loading amount is equal to the CEC or the external cation exchange capacity for clinoptilolite (ECEC approximate to 10% CEC), the monolayer will form while mineral surface will have hydrophobic character. Only one active center exists at the surface of the clinoptilolite that was identified by DTA curves with a sharp and defined peak around 300 degrees C and by the mass loss at the TG diagrams. Two significant and equal active centers were observed in vermiculite, one for the exchange of the surface cations and the other for the interlayer cations and H2O molecules. Muscovite CEC is negligible, and due to the absence of any other functional groups, the modification of this mineral was impossible.
PB  - Springer, Dordrecht
T2  - Journal of Thermal Analysis and Calorimetry
T1  - Differences in coating mechanism of structurally different aluminosilicates observed through the thermal analysis
EP  - 1019
IS  - 2
SP  - 1011
VL  - 134
DO  - 10.1007/s10973-018-7351-3
UR  - conv_836
ER  - 

@article{
author = "Milićević, Sonja and Martinović, Sanja and Milošević, Vladan and Stojanović, Jovica and Povrenović, Dragan",
year = "2018",
abstract = "Systematic modification of three structurally different minerals (zeolite, mica, and vermiculite) was carried out with the aim of determining the modification mechanism and exposing the hydrophobic surface that can be used as a sorbent for many organic compounds. Mechanism of modification with cationic surfactant depends strongly on the mineral type. In order to identify the influence of aluminosilicates structural differences on the modification process, adsorption experiments with organic matter and water vapor, supplemented with the DTA/TG analysis, were performed. The cation exchange capacity (CEC) value was 1454>560>28meqkg(-1) for zeolite (clinoptilolite), vermiculite, and mica (muscovite), respectively. Despite its CEC value, vermiculite adsorbed three times the amount of organic matter than did clinoptilolite due to the porous structure of zeolite, which acted to limit the adsorption only on the external exchangeable cations. If the loading amount is equal to the CEC or the external cation exchange capacity for clinoptilolite (ECEC approximate to 10% CEC), the monolayer will form while mineral surface will have hydrophobic character. Only one active center exists at the surface of the clinoptilolite that was identified by DTA curves with a sharp and defined peak around 300 degrees C and by the mass loss at the TG diagrams. Two significant and equal active centers were observed in vermiculite, one for the exchange of the surface cations and the other for the interlayer cations and H2O molecules. Muscovite CEC is negligible, and due to the absence of any other functional groups, the modification of this mineral was impossible.",
publisher = "Springer, Dordrecht",
journal = "Journal of Thermal Analysis and Calorimetry",
title = "Differences in coating mechanism of structurally different aluminosilicates observed through the thermal analysis",
pages = "1019-1011",
number = "2",
volume = "134",
doi = "10.1007/s10973-018-7351-3",
url = "conv_836"
}

Milićević, S., Martinović, S., Milošević, V., Stojanović, J.,& Povrenović, D.. (2018). Differences in coating mechanism of structurally different aluminosilicates observed through the thermal analysis. in Journal of Thermal Analysis and Calorimetry
Springer, Dordrecht., 134(2), 1011-1019.
https://doi.org/10.1007/s10973-018-7351-3
conv_836

Milićević S, Martinović S, Milošević V, Stojanović J, Povrenović D. Differences in coating mechanism of structurally different aluminosilicates observed through the thermal analysis. in Journal of Thermal Analysis and Calorimetry. 2018;134(2):1011-1019.
doi:10.1007/s10973-018-7351-3
conv_836 .

Milićević, Sonja, Martinović, Sanja, Milošević, Vladan, Stojanović, Jovica, Povrenović, Dragan, "Differences in coating mechanism of structurally different aluminosilicates observed through the thermal analysis" in Journal of Thermal Analysis and Calorimetry, 134, no. 2 (2018):1011-1019,
https://doi.org/10.1007/s10973-018-7351-3 .,
conv_836 .

TY  - JOUR
AU  - Milićević, Sonja
AU  - Povrenović, Dragan
AU  - Milošević, Vladan
AU  - Martinović, Sanja
PY  - 2017
UR  - https://ritnms.itnms.ac.rs/handle/123456789/418
AB  - U radu su prikazani rezultati ispitivanja uklanjanja jona bakra primenom tri prirodna zeolita sa različitih lokaliteta (Vranjska banja-VB, Igroš-I i Baia Mare-BM). U cilju karakterizacije zeolita, izvršena su ispitivanja elementarnog sastava, kao i rentgenska (XRDP) i termijska analiza (DTA/TG). Kapaciteti katjonske izmene (CEC) ispitivanih zeolita VB, I i BM iznose 150,1, 169,2 i 176,5 meq/100g. Maksimalni adsorpcioni kapaciteti bakra na VB, I i BM zeolitima iznose 7,75, 8,51, i 11,18 mg/g. Na osnovu ostvarenih rezultata, dobijena je matematička zavisnost koja dobro opisuje vezu između vrednosti CEC i adsorpcionog kapaciteta za bakar. Ova lineralna zavisnost je testirana primenom različitih eksperimentalnih rezultata. Primenom ove zavisnosti moguće je da se predvidi vrednost adsorpcionog kapaciteta bakra na različitim zeolitima poznavanjem njegove CEC vrednosti. .
AB  - In this paper the ability of three natural zeolites from different localities (Vranjska banja-VB, Igroš-I and Baia Mare-BM deposits) to remove copper has been investigated. These three zeolites were subjected to the elementary analysis as well as XRDP and DTA/TG analysis due to complete characterization. Cation exchange capacity of VB, I and BM zeolites were 150.1, 169.2, and 176.5 meq/100g. The maximum adsorption capacity for the copper adsorption on VB, I and BM-zeolites were 7.75, 8.51, and 11.18 mg/g. Based on the obtained results the mathematical expression that describes correlation between the CEC and copper adsorption capacity has been developed. This linear dependance has been tested with the vast variety of experimental results. According to this expression it is possible to predict the copper adsorption capacity for different zeolites based only on their CEC value.
PB  - Univerzitet u Beogradu - Tehnički fakultet u Boru, Beograd
T2  - Journal of Mining and Metallurgy A: Mining
T1  - Predviđanje adsorpcionog kapaciteta bakra na različitim zeolitima
T1  - Predicting the copper adsorption capacity on different zeolites
EP  - 63
IS  - 1
SP  - 57
VL  - 53
DO  - 10.5937/JMMA1701057M
UR  - conv_338
ER  - 

@article{
author = "Milićević, Sonja and Povrenović, Dragan and Milošević, Vladan and Martinović, Sanja",
year = "2017",
abstract = "U radu su prikazani rezultati ispitivanja uklanjanja jona bakra primenom tri prirodna zeolita sa različitih lokaliteta (Vranjska banja-VB, Igroš-I i Baia Mare-BM). U cilju karakterizacije zeolita, izvršena su ispitivanja elementarnog sastava, kao i rentgenska (XRDP) i termijska analiza (DTA/TG). Kapaciteti katjonske izmene (CEC) ispitivanih zeolita VB, I i BM iznose 150,1, 169,2 i 176,5 meq/100g. Maksimalni adsorpcioni kapaciteti bakra na VB, I i BM zeolitima iznose 7,75, 8,51, i 11,18 mg/g. Na osnovu ostvarenih rezultata, dobijena je matematička zavisnost koja dobro opisuje vezu između vrednosti CEC i adsorpcionog kapaciteta za bakar. Ova lineralna zavisnost je testirana primenom različitih eksperimentalnih rezultata. Primenom ove zavisnosti moguće je da se predvidi vrednost adsorpcionog kapaciteta bakra na različitim zeolitima poznavanjem njegove CEC vrednosti. ., In this paper the ability of three natural zeolites from different localities (Vranjska banja-VB, Igroš-I and Baia Mare-BM deposits) to remove copper has been investigated. These three zeolites were subjected to the elementary analysis as well as XRDP and DTA/TG analysis due to complete characterization. Cation exchange capacity of VB, I and BM zeolites were 150.1, 169.2, and 176.5 meq/100g. The maximum adsorption capacity for the copper adsorption on VB, I and BM-zeolites were 7.75, 8.51, and 11.18 mg/g. Based on the obtained results the mathematical expression that describes correlation between the CEC and copper adsorption capacity has been developed. This linear dependance has been tested with the vast variety of experimental results. According to this expression it is possible to predict the copper adsorption capacity for different zeolites based only on their CEC value.",
publisher = "Univerzitet u Beogradu - Tehnički fakultet u Boru, Beograd",
journal = "Journal of Mining and Metallurgy A: Mining",
title = "Predviđanje adsorpcionog kapaciteta bakra na različitim zeolitima, Predicting the copper adsorption capacity on different zeolites",
pages = "63-57",
number = "1",
volume = "53",
doi = "10.5937/JMMA1701057M",
url = "conv_338"
}

Milićević, S., Povrenović, D., Milošević, V.,& Martinović, S.. (2017). Predviđanje adsorpcionog kapaciteta bakra na različitim zeolitima. in Journal of Mining and Metallurgy A: Mining
Univerzitet u Beogradu - Tehnički fakultet u Boru, Beograd., 53(1), 57-63.
https://doi.org/10.5937/JMMA1701057M
conv_338

Milićević S, Povrenović D, Milošević V, Martinović S. Predviđanje adsorpcionog kapaciteta bakra na različitim zeolitima. in Journal of Mining and Metallurgy A: Mining. 2017;53(1):57-63.
doi:10.5937/JMMA1701057M
conv_338 .

Milićević, Sonja, Povrenović, Dragan, Milošević, Vladan, Martinović, Sanja, "Predviđanje adsorpcionog kapaciteta bakra na različitim zeolitima" in Journal of Mining and Metallurgy A: Mining, 53, no. 1 (2017):57-63,
https://doi.org/10.5937/JMMA1701057M .,
conv_338 .

TY  - JOUR
AU  - Milićević, Sonja
AU  - Milošević, Vladan
AU  - Povrenović, Dragan
AU  - Stojanović, Jovica
AU  - Martinović, Sanja
AU  - Babić, Biljana
PY  - 2013
UR  - https://ritnms.itnms.ac.rs/handle/123456789/262
AB  - The increasing levels of industrial wastewater released to the environment present a serious threat to human health, living resources, and ecological systems. Fe-modified zeolites were developed and tested for removal of Cu2+ and Zn2+ from contaminated water. The surfaces of the naturally occurring zeolite, clinoptilolite, were modified with Fe(III) oxyhydroxides using three different methods, denoted I, II, and III (FeCli(1), FeCli(2), and FeNaCli(1), respectively). The oxyhydroxides were prepared in Method I using 0.1 M FeCl3 center dot 6H(2)O in an acetate buffer (pH = 3.6); in Method II, using 10% FeCl3 center dot 6H(2)O solution in 0.1 M KOH (pH = 10); and Method III was the same as Method I except the clinoptilolite was pretreated with NaCl. Newly synthesized materials from these three methods were then tested for their ability to enhance the sorption capacity for Cu and Zn compared to the natural sample (Cli). Powder X-ray diffraction measurements and the chemical composition of these modified samples confirmed that clinoptilolite maintained its structure while amorphous Fe3+ species were synthesized. The specific surface area (BET method) of both the natural and modified clinoptilolite increased by 2 and 7.5 times for Methods I and II, respectively. Scanning electron microscopy and energy dispersive X-ray spectroscopy revealed that CaO was formed during Method I (FeCli(1)). Throughout the adsorption process, the hydrolysis of CaO and the release of OH- caused the precipitation of Cu and Zn hydroxide, which made the determination of the sorption capacity of FeCli(1) impossible. This phenomenon was avoided in Method III (FeNaCli(1)) because of the absence of exchangeable Ca2+. The adsorption experiments with Method II resulted in double-enchanced adsoprtion capacity. Laboratory batch experiments revealed that the sorption capacities increased in the following order: Cli  LT  FeCli(2)  LT  FeNaCli(1), for Cu: 0.121 mmol/g  LT  0.251 mmol/g  LT  0.403 mmol/g and for Zn: 0.128 mmol/g  LT  0.234 mmol/g  LT  0.381 mmol/g.
PB  - Springer, New York
T2  - Clays and Clay Minerals
T1  - Removal of heavy metals from aqueous solution using natural and fe(iii) oxyhydroxide clinoptilolite
EP  - 516
IS  - 6
SP  - 508
VL  - 61
DO  - 10.1346/CCMN.2013.0610603
UR  - conv_696
ER  - 

@article{
author = "Milićević, Sonja and Milošević, Vladan and Povrenović, Dragan and Stojanović, Jovica and Martinović, Sanja and Babić, Biljana",
year = "2013",
abstract = "The increasing levels of industrial wastewater released to the environment present a serious threat to human health, living resources, and ecological systems. Fe-modified zeolites were developed and tested for removal of Cu2+ and Zn2+ from contaminated water. The surfaces of the naturally occurring zeolite, clinoptilolite, were modified with Fe(III) oxyhydroxides using three different methods, denoted I, II, and III (FeCli(1), FeCli(2), and FeNaCli(1), respectively). The oxyhydroxides were prepared in Method I using 0.1 M FeCl3 center dot 6H(2)O in an acetate buffer (pH = 3.6); in Method II, using 10% FeCl3 center dot 6H(2)O solution in 0.1 M KOH (pH = 10); and Method III was the same as Method I except the clinoptilolite was pretreated with NaCl. Newly synthesized materials from these three methods were then tested for their ability to enhance the sorption capacity for Cu and Zn compared to the natural sample (Cli). Powder X-ray diffraction measurements and the chemical composition of these modified samples confirmed that clinoptilolite maintained its structure while amorphous Fe3+ species were synthesized. The specific surface area (BET method) of both the natural and modified clinoptilolite increased by 2 and 7.5 times for Methods I and II, respectively. Scanning electron microscopy and energy dispersive X-ray spectroscopy revealed that CaO was formed during Method I (FeCli(1)). Throughout the adsorption process, the hydrolysis of CaO and the release of OH- caused the precipitation of Cu and Zn hydroxide, which made the determination of the sorption capacity of FeCli(1) impossible. This phenomenon was avoided in Method III (FeNaCli(1)) because of the absence of exchangeable Ca2+. The adsorption experiments with Method II resulted in double-enchanced adsoprtion capacity. Laboratory batch experiments revealed that the sorption capacities increased in the following order: Cli  LT  FeCli(2)  LT  FeNaCli(1), for Cu: 0.121 mmol/g  LT  0.251 mmol/g  LT  0.403 mmol/g and for Zn: 0.128 mmol/g  LT  0.234 mmol/g  LT  0.381 mmol/g.",
publisher = "Springer, New York",
journal = "Clays and Clay Minerals",
title = "Removal of heavy metals from aqueous solution using natural and fe(iii) oxyhydroxide clinoptilolite",
pages = "516-508",
number = "6",
volume = "61",
doi = "10.1346/CCMN.2013.0610603",
url = "conv_696"
}

Milićević, S., Milošević, V., Povrenović, D., Stojanović, J., Martinović, S.,& Babić, B.. (2013). Removal of heavy metals from aqueous solution using natural and fe(iii) oxyhydroxide clinoptilolite. in Clays and Clay Minerals
Springer, New York., 61(6), 508-516.
https://doi.org/10.1346/CCMN.2013.0610603
conv_696

Milićević S, Milošević V, Povrenović D, Stojanović J, Martinović S, Babić B. Removal of heavy metals from aqueous solution using natural and fe(iii) oxyhydroxide clinoptilolite. in Clays and Clay Minerals. 2013;61(6):508-516.
doi:10.1346/CCMN.2013.0610603
conv_696 .

Milićević, Sonja, Milošević, Vladan, Povrenović, Dragan, Stojanović, Jovica, Martinović, Sanja, Babić, Biljana, "Removal of heavy metals from aqueous solution using natural and fe(iii) oxyhydroxide clinoptilolite" in Clays and Clay Minerals, 61, no. 6 (2013):508-516,
https://doi.org/10.1346/CCMN.2013.0610603 .,
conv_696 .