Semiconductor based photocatalytic degradation of pesticides: An overview

Vaya, Dipti; Surolia, Praveen K.

doi:10.1016/j.eti.2020.101128

Cited by 151 publications

(49 citation statements)

References 221 publications

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“…Therefore, degrading pesticide residues is highly crucial. Several approaches have been reported for pesticide degradation in water such as oxidation, adsorption [23], biological treatment [24], photocatalysis [25], and coagulation [26]. Photocatalysis remains the most advanced and suitable technique for pesticide treatment due to its simplicity and sustainability [27].…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, the photolysis of the pesticides was performed in absence of catalyst and photocatalytic degradation using 1% TiO 2 and 1% ZnO as photocatalysts for pesticide degradation under UV radiation at wavelength of 306 nm. The degradation of pesticides in aqueous solutions is widely studied [25], however there are limited studies on the degradation in soil. Our work presents an important and vital study for the photodegradation of dangerous pesticides in the soil.…”

Section: Introductionmentioning

confidence: 99%

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Study of the Photocatalytic Degradation of Highly Abundant Pesticides in Agricultural Soils

2022

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Organic pesticides are major sources of soil pollution in agricultural lands. Most of these pesticides are persistent and tend to bio accumulate in humans upon consumption of contaminated plants. In this study, we investigate different natural soil samples that were collected from agricultural lands. The samples revealed the presence of 18 pesticides that belong to four different groups including organochlorines (OCP), organophosphorus (OPP), carbamates (Carb), and pyrethroids (Pyrth). The photocatalytic degradation of the five most abundant pesticides was studied in the presence and absence of 1% TiO2 or ZnO photocatalysts under UV irradiation at a wavelength of 306 nm. The five abundant pesticides were Atrazine (OCP), Chlorpyrifos methyl (OPP), Dimethoate (OPP), Heptachlor (OCP), and Methomyl (Carb). The results showed that photolysis of all pesticides was complete under UV radiation for irradiation times between 64–100 h. However, both photocatalysts enhanced photocatalytic degradation of the pesticides in comparison with photolysis. The pesticides were photocatalytically degraded completely within 20–24 h of irradiation. The TiO2 photocatalyst showed higher activity compared to ZnO. The organochlorine heptachlor, which is very toxic and persistent, was completely degraded within 30 h using TiO2 photocatalyst for the first time in soil. The mechanism of photocatalytic degradation of the pesticides was explained and the effects of different factors on the degradation process in the soil were discussed.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Study of the Photocatalytic Degradation of Highly Abundant Pesticides in Agricultural Soils

2022

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“…Conventional techniques mainly fall into cleaning with various reagents, peeling, drying, heating, and other processes ( 10 , 11 ). Chemical methods mainly include ozone ( 9 ), and photocatalytic oxidation ( 12 – 14 ); non-thermal physical methods primarily contain cold plasma, photolysis, electron beam, electrolyzed water, etc. ( 14 – 17 ).…”

Section: Introductionmentioning

confidence: 99%

Photolysis for the Removal and Transformation of Pesticide Residues During Food Processing: A State-of-the-Art Minireview

et al. 2022

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Pesticide residues are of great significant issue that exerted adverse effects on humans. There is a need for effective and non-toxic decontamination of pesticide residues during food processing. In this minireview, the recent advances in the degradation of pesticide residues by photolysis have been firstly described during food processing. The mechanisms of pesticide residues destruction by photolysis were discussed accordingly. Finally, applications of photolysis in the degradation of pesticide residues from beverages, fresh produce, and food rinse waste were also summarized.

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“…This radical anion has a high oxidation potential (E 0 = 2.6 eV) similar to HO • [7]. The semiconductor based photocatalytic degradation of pesticides has been described in the recent literature thoroughly [10]. This process contributes efficiently to remove biorecalcitrant pesticides from water, which are chemically stable and resistant to biodegradation.…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic Oxidation of Chlorantraniliprole, Imidacloprid, Pirimicarb, Thiamethoxam and Their Main Photoreaction InterMediates as Impacted by Water Matrix Composition under UVA-LED Exposure

et al. 2021

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Processes on wastewater treatment plants (WWTP) are not always efficient for pollutant removal. A new, low-cost, and effective technology is needed. In this work, the photocatalytic degradation of four insecticides, chlorantraniliprole, imidacloprid, pirimicarb, and thiamethoxam, has been examined in different water matrices (irrigation water, leaching waters, and WWTP effluent). Lab experiments were conducted with TiO2 and ZnO, as photocatalysts, with and without Na2S2O8 as an oxidant, exposed to UVA irradiation with LED lamps. Previously, different loadings of TiO2 and ZnO were assessed on the disappearance kinetics of the different insecticides to know the optimal efficiency. The effect of water matrices, susceptible to being contaminated with the target insecticides, was discussed when the photocatalytic system TiO2/Na2S2O8 was applied. The abatement of their main transformation products (TPs) was also monitored during the studied photoperiods. A total of 13 TPs were detected in the different water matrices studied. All of them were formed and eliminated during the photoperiod, except thiamethoxam urea which was present from the beginning of the experiments due to its hydrolysis in water. In conclusion, UVA-LED lamps are a good source to carry out heterogeneous photocatalysis in WWTP, since its high efficiency, low-cost, long lifetime, and effectiveness on pollutant removal.

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Semiconductor based photocatalytic degradation of pesticides: An overview

Cited by 151 publications

References 221 publications

Study of the Photocatalytic Degradation of Highly Abundant Pesticides in Agricultural Soils

Study of the Photocatalytic Degradation of Highly Abundant Pesticides in Agricultural Soils

Photolysis for the Removal and Transformation of Pesticide Residues During Food Processing: A State-of-the-Art Minireview

Photocatalytic Oxidation of Chlorantraniliprole, Imidacloprid, Pirimicarb, Thiamethoxam and Their Main Photoreaction InterMediates as Impacted by Water Matrix Composition under UVA-LED Exposure

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