The extremely high stability of carbofuran pesticide in acidic media

Tomasevic, V Andjelka; Boskovic, Colette; Mijin, Dušan Ž.; Djilas, M Sonja; Kis, E.

doi:10.2298/apt0738097t

Cited by 4 publications

(4 citation statements)

References 10 publications

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“…The degradation observed in the presence of ZnO under irradiation confirmed that the process takes place in a photocatalytic regime. The highest photocatalytic degradation rate of carbofuran in our earlier investigation (Tomašević et al, 2007) was obtained for 2 g L -1 of ZnO. Therefore, 2 g L -1 of photocatalyst was chosen as the concentration in all photocatalytic degradation experiments performed in this study.…”

Section: Effect Of Reaction Time On Photocatalytic Degradation Of Carmentioning

confidence: 93%

Photocatalytic degradation of carbamate insecticides: Effect of different parameters

et al. 2019

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Photocatalytic degradation of a model compound of the carbamate insecticide carbofuran in water was studied using polychromatic light and ZnO and TiO2 catalysts. The influence of operational parameters, such as reaction time and initial carbofuran concentration, on photocatalytic degradation was studied. A pseudo-first-order kinetic model was established and an almost complete removal of 88.4 mg L-1 of carbofuran occurred within 2 h under optimized conditions. The reactions were examined by UV spectroscopy and high performance liquid chromatography (HPLC). In addition, the photocatalytic efficiencies of ZnO and TiO2 were compared under the same reaction conditions. [Projects of the Serbian Ministry of Education, Science and Technological Development, Grant no. III 46008, Grant no. 172013 and Grant no. 172035]

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Section: Effect Of Reaction Time On Photocatalytic Degradation Of Carmentioning

confidence: 93%

Photocatalytic degradation of carbamate insecticides: Effect of different parameters

et al. 2019

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“…Table 6. Pseudo-first-order rate constants of methomyl photodegradation in presence of AlFe-PILC and Fe-ZSM-5 catalysts [19] The heterogeneous photo-Fenton reaction in methomyl and carbofuran water solutions (1.0 x 10 -4 M) in a glass batch reactor at constant pH (3.5-4.0), in the presence of AlFe-pillared clay catalyst (PILC) and Fe-ZSM-5 zeolite catalyst (both 5.0 g/L), under halogen lamp light (575.6 nm) was investigated [76,82]. The applied catalysts decomposed methomyl successfully but were inactive for carbofuran degradation.…”

Section: Heterogeneous Photocatalysismentioning

confidence: 99%

“…Carbofuran could not be mineralized by the use of AlFe-PILC and Fe-ZSM-5 zeolite catalysts, even in a high-temperature catalytic reaction. The high chemical stability of the carbofuran molecule may be explained by its electronic structure, but this claim requires further theoretical and experimental investigations [76,82].…”

Section: Heterogeneous Photocatalysismentioning

confidence: 99%

Photochemical processes for removal of carbamate pesticides from water

Tomašević¹,

Petrović²,

Mijin³

2019

Adv Techol

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A large number of pesticide active ingredients have been registered and marketed for pest control purposes around the world. Most pesticides, including carbamates are resistant to chemical and natural photochemical degradation, so that developing adequate methods for remediation of contaminated waters is a priority. There are different methods for removing carbamate pesticide residues from water, and photodegradation methods are discussed in this study. According to literature data, the most beneficial photochemical processes for removal of pesticides from water are two well-known Advanced Oxidation Processes: heterogeneous photocatalysis with semiconductor oxides TiO 2 and ZnO, and homogeneous photo-Fenton treatment, as well as direct UV photolysis. Photochemical investigations may contribute toward our better understanding of carbamate pesticide behavior in the environment, i.e. more information on the degradation time of active ingredients, their activity and environmental fate can be obtained by studying the kinetics of any photochemical reaction.

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“…The TOC measurement indicate an efficient mineralization of 93 and 94% respectively, for photo-and electro-Fenton processes after 480 min of treatment. Carbofuran could not be mineralized on AlFe-PILC and Fe-ZSM-5 zeolite catalysts in the heterogeneous photo-Fenton reactions at 575.6 nm, even in the catalytic reaction promoted at high temperature (Tomašević et al, 2007a(Tomašević et al, , 2007b.…”

Section: Carbofuranmentioning

confidence: 99%