Popović, Ana

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  • Popović, Ana (3)

Author's Bibliography

Acrylic modified kraft lignin microspheres as novel support for immobilization of laccase from M.Thermophila expressed in A. oryzae (Novozym® 51003) and application in degradation of anthraquinone textile dyes

Salih, Rabab; Banjanac, Katarina; Vukoičić, Ana; Gržetić, Jelena; Popović, Ana; Veljković, Milica; Bezbradica, Dejan; Marinković, Aleksandar

(Elsevier Ltd., 2023)

TY  - JOUR
AU  - Salih, Rabab
AU  - Banjanac, Katarina
AU  - Vukoičić, Ana
AU  - Gržetić, Jelena
AU  - Popović, Ana
AU  - Veljković, Milica
AU  - Bezbradica, Dejan
AU  - Marinković, Aleksandar
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5278
AB  - The novel lignin-based microspheres (LMS-DEGDMA) were produced through a two-step modification procedure consisting of kraft lignin (KL) modification with acrylic acid synthesized from fructose; and suspension and copolymerization of acrylic acid modified KL (KL-A) with diethylene glycol dimethacrylate (DEGDMA). The applied procedure provided LMS-DEGDMA microspheres in the size range of 50-90 μm with specific surface area of 39 m2/g, porosity ϵp 62, pore diameters of 4-20 nm and total pore volume of 0.14 cm3/g. Immobilization of laccase from Myceliophthora thermophilia expressed in Aspergillus oryzae (Novozyme® 51003) on LMS-DEGDMA was explored. By optimization of the immobilization process, it was demonstrated that laccase immobilization on LMS-DEGDMA exhibited the best results (protein immobilization yield of 70 %, activity yield of 27 %, and catalytic activity of 262 IU/g of support) when the immobilization was carried out at pH 5.0 and 100 mg of offered protein per g support during 1 h. Additionally, the LMS-DEGDMA-laccase preparation showed efficiency (>80 %, 5-7 cycles) in decolorization of anthraquinone dyes (Lanaset® violet B, Lanaset® blue 2 R and C.I. Acid Green 40) and their mixture. In case of Lanaset® violet B, LMS-DEGDMA improved laccase's kinetics characteristics (90 % over 24 h) along with operational stability (> 63 % catalytic activity, 7 cycles).
PB  - Elsevier Ltd.
T2  - Journal of Environmental Chemical Engineering
T1  - Acrylic modified kraft lignin microspheres as novel support for immobilization of laccase from M.Thermophila expressed in A. oryzae (Novozym® 51003) and application in degradation of anthraquinone textile dyes
IS  - 1
SP  - 109077
VL  - 11
DO  - 10.1016/j.jece.2022.109077
ER  - 
@article{
author = "Salih, Rabab and Banjanac, Katarina and Vukoičić, Ana and Gržetić, Jelena and Popović, Ana and Veljković, Milica and Bezbradica, Dejan and Marinković, Aleksandar",
year = "2023",
abstract = "The novel lignin-based microspheres (LMS-DEGDMA) were produced through a two-step modification procedure consisting of kraft lignin (KL) modification with acrylic acid synthesized from fructose; and suspension and copolymerization of acrylic acid modified KL (KL-A) with diethylene glycol dimethacrylate (DEGDMA). The applied procedure provided LMS-DEGDMA microspheres in the size range of 50-90 μm with specific surface area of 39 m2/g, porosity ϵp 62, pore diameters of 4-20 nm and total pore volume of 0.14 cm3/g. Immobilization of laccase from Myceliophthora thermophilia expressed in Aspergillus oryzae (Novozyme® 51003) on LMS-DEGDMA was explored. By optimization of the immobilization process, it was demonstrated that laccase immobilization on LMS-DEGDMA exhibited the best results (protein immobilization yield of 70 %, activity yield of 27 %, and catalytic activity of 262 IU/g of support) when the immobilization was carried out at pH 5.0 and 100 mg of offered protein per g support during 1 h. Additionally, the LMS-DEGDMA-laccase preparation showed efficiency (>80 %, 5-7 cycles) in decolorization of anthraquinone dyes (Lanaset® violet B, Lanaset® blue 2 R and C.I. Acid Green 40) and their mixture. In case of Lanaset® violet B, LMS-DEGDMA improved laccase's kinetics characteristics (90 % over 24 h) along with operational stability (> 63 % catalytic activity, 7 cycles).",
publisher = "Elsevier Ltd.",
journal = "Journal of Environmental Chemical Engineering",
title = "Acrylic modified kraft lignin microspheres as novel support for immobilization of laccase from M.Thermophila expressed in A. oryzae (Novozym® 51003) and application in degradation of anthraquinone textile dyes",
number = "1",
pages = "109077",
volume = "11",
doi = "10.1016/j.jece.2022.109077"
}
Salih, R., Banjanac, K., Vukoičić, A., Gržetić, J., Popović, A., Veljković, M., Bezbradica, D.,& Marinković, A.. (2023). Acrylic modified kraft lignin microspheres as novel support for immobilization of laccase from M.Thermophila expressed in A. oryzae (Novozym® 51003) and application in degradation of anthraquinone textile dyes. in Journal of Environmental Chemical Engineering
Elsevier Ltd.., 11(1), 109077.
https://doi.org/10.1016/j.jece.2022.109077
Salih R, Banjanac K, Vukoičić A, Gržetić J, Popović A, Veljković M, Bezbradica D, Marinković A. Acrylic modified kraft lignin microspheres as novel support for immobilization of laccase from M.Thermophila expressed in A. oryzae (Novozym® 51003) and application in degradation of anthraquinone textile dyes. in Journal of Environmental Chemical Engineering. 2023;11(1):109077.
doi:10.1016/j.jece.2022.109077 .
Salih, Rabab, Banjanac, Katarina, Vukoičić, Ana, Gržetić, Jelena, Popović, Ana, Veljković, Milica, Bezbradica, Dejan, Marinković, Aleksandar, "Acrylic modified kraft lignin microspheres as novel support for immobilization of laccase from M.Thermophila expressed in A. oryzae (Novozym® 51003) and application in degradation of anthraquinone textile dyes" in Journal of Environmental Chemical Engineering, 11, no. 1 (2023):109077,
https://doi.org/10.1016/j.jece.2022.109077 . .
7
5

Fenton process in dispersed systems for industrial wastewater treatment

Popović, Ana; Milicević, Sonja; Milosević, Vladan; Ivošević, Branislav; Carapić, Jelena; Jovanović, Vladimir; Povrenović, Dragan

(Savez hemijskih inženjera, Beograd, 2019)

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 . .
2
1

Fluido-mehaničke karakteristike istostrujnog fontanskog sloja

Povrenović, Dragan; Popović, Ana; Milićević, Sonja

(Udruženje za tehnologiju vode i sanitarno inžinjerstvo, Beograd, 2018)

TY  - JOUR
AU  - Povrenović, Dragan
AU  - Popović, Ana
AU  - Milićević, Sonja
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3819
AB  - U ovom radu je analiziran rad istostrujnog fontanskog sloja sa centralnom cevi u sistemu čvrste čestice-voda. Eksperimenti su realizovani na polukoloni prečnika 196 mm, ukupne visine 860 mm, sa koničnim dnom ugla 110o . Mlaznica prečnika 20 mm je bila centralno postavljena, sa mogućnošću pomeranja vrha mlaznice ka početku centralne cevi, prečnika 25 mm. Kao ispuna kolone korišćene su staklene kuglice i granule PET-a, odnosno polietilena. Osnovni cilj rada je bio utvrđivanje fluido-mehaničkih parametara pri kojima je moguće formirati fontanski sloj kod koga bi jedan udeo čestica u anulusu bio potpuno potopljen u vodi, a gornji sloj čestica bi mogao biti u kontaktu sa vazduhom. Potencijalna primena ovakvih sistema bi mogla biti u procesima aeracije, odnosno degazacije vode.
PB  - Udruženje za tehnologiju vode i sanitarno inžinjerstvo, Beograd
T2  - Voda i sanitarna tehnika
T1  - Fluido-mehaničke karakteristike istostrujnog fontanskog sloja
EP  - 44
IS  - 2
SP  - 37
VL  - 48
UR  - https://hdl.handle.net/21.15107/rcub_technorep_3819
ER  - 
@article{
author = "Povrenović, Dragan and Popović, Ana and Milićević, Sonja",
year = "2018",
abstract = "U ovom radu je analiziran rad istostrujnog fontanskog sloja sa centralnom cevi u sistemu čvrste čestice-voda. Eksperimenti su realizovani na polukoloni prečnika 196 mm, ukupne visine 860 mm, sa koničnim dnom ugla 110o . Mlaznica prečnika 20 mm je bila centralno postavljena, sa mogućnošću pomeranja vrha mlaznice ka početku centralne cevi, prečnika 25 mm. Kao ispuna kolone korišćene su staklene kuglice i granule PET-a, odnosno polietilena. Osnovni cilj rada je bio utvrđivanje fluido-mehaničkih parametara pri kojima je moguće formirati fontanski sloj kod koga bi jedan udeo čestica u anulusu bio potpuno potopljen u vodi, a gornji sloj čestica bi mogao biti u kontaktu sa vazduhom. Potencijalna primena ovakvih sistema bi mogla biti u procesima aeracije, odnosno degazacije vode.",
publisher = "Udruženje za tehnologiju vode i sanitarno inžinjerstvo, Beograd",
journal = "Voda i sanitarna tehnika",
title = "Fluido-mehaničke karakteristike istostrujnog fontanskog sloja",
pages = "44-37",
number = "2",
volume = "48",
url = "https://hdl.handle.net/21.15107/rcub_technorep_3819"
}
Povrenović, D., Popović, A.,& Milićević, S.. (2018). Fluido-mehaničke karakteristike istostrujnog fontanskog sloja. in Voda i sanitarna tehnika
Udruženje za tehnologiju vode i sanitarno inžinjerstvo, Beograd., 48(2), 37-44.
https://hdl.handle.net/21.15107/rcub_technorep_3819
Povrenović D, Popović A, Milićević S. Fluido-mehaničke karakteristike istostrujnog fontanskog sloja. in Voda i sanitarna tehnika. 2018;48(2):37-44.
https://hdl.handle.net/21.15107/rcub_technorep_3819 .
Povrenović, Dragan, Popović, Ana, Milićević, Sonja, "Fluido-mehaničke karakteristike istostrujnog fontanskog sloja" in Voda i sanitarna tehnika, 48, no. 2 (2018):37-44,
https://hdl.handle.net/21.15107/rcub_technorep_3819 .