TY  - JOUR
AU  - Popović, Ana
AU  - Milicević, Sonja
AU  - Milosević, Vladan
AU  - Ivošević, Branislav
AU  - Carapić, Jelena
AU  - Jovanović, Vladimir
AU  - Povrenović, Dragan
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4154
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
ER  - 

@article{
author = "Popović, Ana and Milicević, Sonja and Milosević, 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"
}

Popović, A., Milicević, S., Milosević, 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

Popović A, Milicević S, Milosević 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 .

Popović, Ana, Milicević, Sonja, Milosević, 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 . .

TY  - JOUR
AU  - Milicević, Sonja
AU  - Martinović, Sanja
AU  - Milosević, Vladan
AU  - Stojanović, Jovica
AU  - Povrenović, Dragan
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3944
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 gt 560 gt 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
ER  - 

@article{
author = "Milicević, Sonja and Martinović, Sanja and Milosević, 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 gt 560 gt 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"
}

Milicević, S., Martinović, S., Milosević, 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

Milicević S, Martinović S, Milosević 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 .

Milicević, Sonja, Martinović, Sanja, Milosević, 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 . .

TY  - JOUR
AU  - Milicević, Sonja
AU  - Milosević, Vladan
AU  - Povrenović, Dragan
AU  - Stojanović, Jovica
AU  - Martinović, Sanja
AU  - Babić, Biljana M.
PY  - 2013
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2398
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  - Clay Minerals Soc, Chantilly
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
ER  - 

@article{
author = "Milicević, Sonja and Milosević, Vladan and Povrenović, Dragan and Stojanović, Jovica and Martinović, Sanja and Babić, Biljana M.",
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 = "Clay Minerals Soc, Chantilly",
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"
}

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

Milicević S, Milosević V, Povrenović D, Stojanović J, Martinović S, Babić BM. 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 .

Milicević, Sonja, Milosević, Vladan, Povrenović, Dragan, Stojanović, Jovica, Martinović, Sanja, Babić, Biljana M., "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 . .