TY  - JOUR
AU  - Finčur, Nina L.
AU  - Krstić, Jugoslav
AU  - Sibul, Filip S.
AU  - Sojic, Daniela V.
AU  - Despotović, Vesna N.
AU  - Banic, Nemanja D.
AU  - Agbaba, Jasmina R.
AU  - Abramović, Biljana F.
PY  - 2017
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2077
AB  - Efficiency of heterogeneous photocatalytic degradation of aiprazolam was investigated. The structural and morphological properties of ZnO were investigated in detail. It was found that ZnO has wurtzite structure with crystallite size about 41 nm, specific surface area about 6.5 m(2)/g, and intraparticle system of pores (maximum pore width about 160 nm). The efficiency of aiprazolam photocatalytic degradation was examined as a function of the type of irradiation (UVA, visible, and simulated solar irradiation) and photocatalyst (ZnO, TiO2 Degussa P25), photocatalyst loading, pH, and the presence of hydroxyl radical, and positive hole scavengers. By examining the effect of types of irradiation and catalysts, it was found that the UVA/ZnO system is the most efficient for alprazolam removal. The optimum catalyst loading was 2.0 mg/mL for TiO2 Degussa P25, while in presence of ZnO degradation rate increases in whole investigated range. In the case of ZnO, the pH 7 was selected as an optimal condition, while in aqueous suspension of TiO2 Degussa P25, degradation rate increases in whole investigated pH range (3.4-8.8), but increasing is not as pronounced as in case of ZnO. Also, it was found that ZnO photocatalysis takes place only via hydroxyl radicals, while using TiO2 Degussa P25 positive holes play significant role, too. The results of total organic carbon and ionic chromatography analysis showed that after 60 min of irradiation using both catalysts aiprazolam was completely mineralized. Here, for the first time, reaction intermediates formed using both catalysts were studied in detail, whereby the main intermediates were hydroxyl derivates. ZnO showed high stability in photodegradation after three successive runs.
PB  - Elsevier Science Sa, Lausanne
T2  - Chemical Engineering Journal
T1  - Removal of alprazolam from aqueous solutions by heterogeneous photocatalysis: Influencing factors, intermediates, and products
VL  - 307
SP  - 1105
EP  - 1115
DO  - 10.1016/j.cej.2016.09.008
ER  - 

@article{
author = "Finčur, Nina L. and Krstić, Jugoslav and Sibul, Filip S. and Sojic, Daniela V. and Despotović, Vesna N. and Banic, Nemanja D. and Agbaba, Jasmina R. and Abramović, Biljana F.",
year = "2017",
abstract = "Efficiency of heterogeneous photocatalytic degradation of aiprazolam was investigated. The structural and morphological properties of ZnO were investigated in detail. It was found that ZnO has wurtzite structure with crystallite size about 41 nm, specific surface area about 6.5 m(2)/g, and intraparticle system of pores (maximum pore width about 160 nm). The efficiency of aiprazolam photocatalytic degradation was examined as a function of the type of irradiation (UVA, visible, and simulated solar irradiation) and photocatalyst (ZnO, TiO2 Degussa P25), photocatalyst loading, pH, and the presence of hydroxyl radical, and positive hole scavengers. By examining the effect of types of irradiation and catalysts, it was found that the UVA/ZnO system is the most efficient for alprazolam removal. The optimum catalyst loading was 2.0 mg/mL for TiO2 Degussa P25, while in presence of ZnO degradation rate increases in whole investigated range. In the case of ZnO, the pH 7 was selected as an optimal condition, while in aqueous suspension of TiO2 Degussa P25, degradation rate increases in whole investigated pH range (3.4-8.8), but increasing is not as pronounced as in case of ZnO. Also, it was found that ZnO photocatalysis takes place only via hydroxyl radicals, while using TiO2 Degussa P25 positive holes play significant role, too. The results of total organic carbon and ionic chromatography analysis showed that after 60 min of irradiation using both catalysts aiprazolam was completely mineralized. Here, for the first time, reaction intermediates formed using both catalysts were studied in detail, whereby the main intermediates were hydroxyl derivates. ZnO showed high stability in photodegradation after three successive runs.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Chemical Engineering Journal",
title = "Removal of alprazolam from aqueous solutions by heterogeneous photocatalysis: Influencing factors, intermediates, and products",
volume = "307",
pages = "1105-1115",
doi = "10.1016/j.cej.2016.09.008"
}

Finčur, N. L., Krstić, J., Sibul, F. S., Sojic, D. V., Despotović, V. N., Banic, N. D., Agbaba, J. R.,& Abramović, B. F.. (2017). Removal of alprazolam from aqueous solutions by heterogeneous photocatalysis: Influencing factors, intermediates, and products. in Chemical Engineering Journal
Elsevier Science Sa, Lausanne., 307, 1105-1115.
https://doi.org/10.1016/j.cej.2016.09.008

Finčur NL, Krstić J, Sibul FS, Sojic DV, Despotović VN, Banic ND, Agbaba JR, Abramović BF. Removal of alprazolam from aqueous solutions by heterogeneous photocatalysis: Influencing factors, intermediates, and products. in Chemical Engineering Journal. 2017;307:1105-1115.
doi:10.1016/j.cej.2016.09.008 .

Finčur, Nina L., Krstić, Jugoslav, Sibul, Filip S., Sojic, Daniela V., Despotović, Vesna N., Banic, Nemanja D., Agbaba, Jasmina R., Abramović, Biljana F., "Removal of alprazolam from aqueous solutions by heterogeneous photocatalysis: Influencing factors, intermediates, and products" in Chemical Engineering Journal, 307 (2017):1105-1115,
https://doi.org/10.1016/j.cej.2016.09.008 . .

TY  - JOUR
AU  - Banic, Nemanja D
AU  - Abramović, Biljana F.
AU  - Sojic, Daniela V
AU  - Krstić, Jugoslav
AU  - Finčur, Nina L.
AU  - Bakovic, Igor P
PY  - 2016
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1979
AB  - This article is concerned with the kinetics of the photocatalytic degradation of four neonicotinoids insecticides as active ingredients (AN) in their commercial formulations by using the annular slurry reactor (ASR). For all Als, more effective photodegradation was achieved by UVA than by visible light irradiation. The most efficient degradation was observed in the case of thiacloprid, which degraded completely after two hours of irradiation using UVA, and 59% using visible light irradiation. On the other hand, the most stable appeared to be acetamiprid, whereby during the same time of irradiation it was degraded 42% using UVA, and only 4% using visible light irradiation. Because of that the efficiency of a number of advanced oxidation processes was examined in the case of acetamiprid. It was found that the presence of H2O2 in ZnO, 7.8Fe/ZnO, and 7.2Fe/TiO2 systems using UVA did not bring significant changes in the efficiency of degradation. However, using visible light irradiation the presence of H2O2 in ZnO and 7.8Fe/ZnO systems significantly increases efficiency of acetamiprid degradation. Also, by adjusting pH to 2.80 in the system 7.2Fe/TiO2/H2O2 using both type of irradiation resulted in a significant increase of the degradation efficiency. For the first time, for ZnO/H2O2 system a general reaction mechanism in the dark, as well as in the presence of visible light irradiation was proposed. The electrical energy consumption of ASR was estimated for the most efficient visible light irradiation system using the figure-of-merit electrical energy per order and compared with batch and laminar falling film slurry reactor.
PB  - Elsevier Science Sa, Lausanne
T2  - Chemical Engineering Journal
T1  - Efficiency of neonicotinoids photocatalytic degradation by using annular slurry reactor
VL  - 286
SP  - 184
EP  - 190
DO  - 10.1016/j.cej.2015.10.076
ER  - 

@article{
author = "Banic, Nemanja D and Abramović, Biljana F. and Sojic, Daniela V and Krstić, Jugoslav and Finčur, Nina L. and Bakovic, Igor P",
year = "2016",
abstract = "This article is concerned with the kinetics of the photocatalytic degradation of four neonicotinoids insecticides as active ingredients (AN) in their commercial formulations by using the annular slurry reactor (ASR). For all Als, more effective photodegradation was achieved by UVA than by visible light irradiation. The most efficient degradation was observed in the case of thiacloprid, which degraded completely after two hours of irradiation using UVA, and 59% using visible light irradiation. On the other hand, the most stable appeared to be acetamiprid, whereby during the same time of irradiation it was degraded 42% using UVA, and only 4% using visible light irradiation. Because of that the efficiency of a number of advanced oxidation processes was examined in the case of acetamiprid. It was found that the presence of H2O2 in ZnO, 7.8Fe/ZnO, and 7.2Fe/TiO2 systems using UVA did not bring significant changes in the efficiency of degradation. However, using visible light irradiation the presence of H2O2 in ZnO and 7.8Fe/ZnO systems significantly increases efficiency of acetamiprid degradation. Also, by adjusting pH to 2.80 in the system 7.2Fe/TiO2/H2O2 using both type of irradiation resulted in a significant increase of the degradation efficiency. For the first time, for ZnO/H2O2 system a general reaction mechanism in the dark, as well as in the presence of visible light irradiation was proposed. The electrical energy consumption of ASR was estimated for the most efficient visible light irradiation system using the figure-of-merit electrical energy per order and compared with batch and laminar falling film slurry reactor.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Chemical Engineering Journal",
title = "Efficiency of neonicotinoids photocatalytic degradation by using annular slurry reactor",
volume = "286",
pages = "184-190",
doi = "10.1016/j.cej.2015.10.076"
}

Banic, N. D., Abramović, B. F., Sojic, D. V., Krstić, J., Finčur, N. L.,& Bakovic, I. P.. (2016). Efficiency of neonicotinoids photocatalytic degradation by using annular slurry reactor. in Chemical Engineering Journal
Elsevier Science Sa, Lausanne., 286, 184-190.
https://doi.org/10.1016/j.cej.2015.10.076

Banic ND, Abramović BF, Sojic DV, Krstić J, Finčur NL, Bakovic IP. Efficiency of neonicotinoids photocatalytic degradation by using annular slurry reactor. in Chemical Engineering Journal. 2016;286:184-190.
doi:10.1016/j.cej.2015.10.076 .

Banic, Nemanja D, Abramović, Biljana F., Sojic, Daniela V, Krstić, Jugoslav, Finčur, Nina L., Bakovic, Igor P, "Efficiency of neonicotinoids photocatalytic degradation by using annular slurry reactor" in Chemical Engineering Journal, 286 (2016):184-190,
https://doi.org/10.1016/j.cej.2015.10.076 . .

TY  - JOUR
AU  - Banic, Nemanja D.
AU  - Sojic, Daniela V.
AU  - Krstić, Jugoslav
AU  - Abramović, Biljana F.
PY  - 2014
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1564
AB  - This contribution is concerned with the comparison of the efficiency of the removal of four pure neonicotinoid active ingredients (AIs) and their commercial formulations (CFs) from aqueous solutions by using different advanced oxidation processes at the pH 2.8. The AIs of thiamethoxam and imidacloprid, and their CFs (Actara and Confidor), having a nitroguanidine functional group, exhibited low persistence to photolysis. In contrast to them, thiacloprid and acetamiprid and their CFs (Calypso and Mospilan), containing a cyanoimine functional group, were stable during the UV irradiation period. As expected, the degradation rate of the studied neonicotinoids increased significantly in the combined action of UV radiation and H2O2. In the case of thiacloprid and acetamiprid and their CFs, the reaction of the OH radicals formed and molecules of these insecticides was the major destruction pathway. The increased photodegradation efficiency of the UV/7.2Fe/TiO2/H2O2 and vis/7.2Fe/TiO2/H2O2 processes was attributed to the surface photoreduction of Fe3+ to Fe2+, which produces new OH radicals in the reaction with H2O2. In the presence of visible light, the efficiency may be partly due to the formation of the H2O2-TiO2 complexes. For the 7.2Fe/TiO2/H2O2 process in the presence of UV or visible radiation, no significant influence on the efficiency of photodegradation was observed in dependence of the structural differences of selected neonicotinoids. These results strongly suggest that highly reactive hydroxyl radicals, generated on the catalyst's surface in the reaction involving H2O2, are responsible for this oxidation. In order to investigate degree of mineralization for all insecticides, TOC measurements were also conducted. Also, it was observed that the removal of pure AIs and their CFs by dark adsorption was almost negligible.
PB  - Springer, Dordrecht
T2  - Water Air and Soil Pollution
T1  - Photodegradation of Neonicotinoid Active Ingredients and Their Commercial Formulations in Water by Different Advanced Oxidation Processes
VL  - 225
IS  - 5
DO  - 10.1007/s11270-014-1954-5
ER  - 

@article{
author = "Banic, Nemanja D. and Sojic, Daniela V. and Krstić, Jugoslav and Abramović, Biljana F.",
year = "2014",
abstract = "This contribution is concerned with the comparison of the efficiency of the removal of four pure neonicotinoid active ingredients (AIs) and their commercial formulations (CFs) from aqueous solutions by using different advanced oxidation processes at the pH 2.8. The AIs of thiamethoxam and imidacloprid, and their CFs (Actara and Confidor), having a nitroguanidine functional group, exhibited low persistence to photolysis. In contrast to them, thiacloprid and acetamiprid and their CFs (Calypso and Mospilan), containing a cyanoimine functional group, were stable during the UV irradiation period. As expected, the degradation rate of the studied neonicotinoids increased significantly in the combined action of UV radiation and H2O2. In the case of thiacloprid and acetamiprid and their CFs, the reaction of the OH radicals formed and molecules of these insecticides was the major destruction pathway. The increased photodegradation efficiency of the UV/7.2Fe/TiO2/H2O2 and vis/7.2Fe/TiO2/H2O2 processes was attributed to the surface photoreduction of Fe3+ to Fe2+, which produces new OH radicals in the reaction with H2O2. In the presence of visible light, the efficiency may be partly due to the formation of the H2O2-TiO2 complexes. For the 7.2Fe/TiO2/H2O2 process in the presence of UV or visible radiation, no significant influence on the efficiency of photodegradation was observed in dependence of the structural differences of selected neonicotinoids. These results strongly suggest that highly reactive hydroxyl radicals, generated on the catalyst's surface in the reaction involving H2O2, are responsible for this oxidation. In order to investigate degree of mineralization for all insecticides, TOC measurements were also conducted. Also, it was observed that the removal of pure AIs and their CFs by dark adsorption was almost negligible.",
publisher = "Springer, Dordrecht",
journal = "Water Air and Soil Pollution",
title = "Photodegradation of Neonicotinoid Active Ingredients and Their Commercial Formulations in Water by Different Advanced Oxidation Processes",
volume = "225",
number = "5",
doi = "10.1007/s11270-014-1954-5"
}

Banic, N. D., Sojic, D. V., Krstić, J.,& Abramović, B. F.. (2014). Photodegradation of Neonicotinoid Active Ingredients and Their Commercial Formulations in Water by Different Advanced Oxidation Processes. in Water Air and Soil Pollution
Springer, Dordrecht., 225(5).
https://doi.org/10.1007/s11270-014-1954-5

Banic ND, Sojic DV, Krstić J, Abramović BF. Photodegradation of Neonicotinoid Active Ingredients and Their Commercial Formulations in Water by Different Advanced Oxidation Processes. in Water Air and Soil Pollution. 2014;225(5).
doi:10.1007/s11270-014-1954-5 .

Banic, Nemanja D., Sojic, Daniela V., Krstić, Jugoslav, Abramović, Biljana F., "Photodegradation of Neonicotinoid Active Ingredients and Their Commercial Formulations in Water by Different Advanced Oxidation Processes" in Water Air and Soil Pollution, 225, no. 5 (2014),
https://doi.org/10.1007/s11270-014-1954-5 . .