Photo-Catalytic Remediation of Pesticides in Wastewater Using UV/TiO<sub>2</sub>

One of the most serious environmental concerns worldwide is the consequences of industrial wastes and agricultural usage leading to pesticide residues in water. At present, a wide range of pesticides are used directly to control pests and diseases. However, environmental damage is expected even at t...

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Autores principales:	Mohamed H. EL-Saeid, Modhi O. Alotaibi, Mashael Alshabanat, Khadiga Alharbi, Abeer S. Altowyan, Murefah Al-Anazy
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	photolysis catalysis degradation pesticides UV wastewater Hydraulic engineering TC1-978 Water supply for domestic and industrial purposes TD201-500
Acceso en línea:	https://doaj.org/article/135bc4fef473408c87c233c1396807ed
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spelling	oai:doaj.org-article:135bc4fef473408c87c233c1396807ed2021-11-11T19:56:40ZPhoto-Catalytic Remediation of Pesticides in Wastewater Using UV/TiO<sub>2</sub>10.3390/w132130802073-4441https://doaj.org/article/135bc4fef473408c87c233c1396807ed2021-11-01T00:00:00Zhttps://www.mdpi.com/2073-4441/13/21/3080https://doaj.org/toc/2073-4441One of the most serious environmental concerns worldwide is the consequences of industrial wastes and agricultural usage leading to pesticide residues in water. At present, a wide range of pesticides are used directly to control pests and diseases. However, environmental damage is expected even at their low concentration because they are sustained a long time in nature, which has a negative impact on human health. In this study, photolysis and photocatalysis of the pesticides dieldrin and deltamethrin were tested at two UV wavelengths (254 and 306 nm) and in different test media (distilled water, wastewater, and agricultural wastewater) to examine their ability to eliminate pesticides. TiO<sub>2</sub> (0.001 g/10 mL) was used as a catalyst for each treatment. The purpose was to determine the influence of UV wavelength, exposure time, and catalyst addition on the pesticide decomposition processes in different water types. Water was loaded with the tested pesticides (2000 µg) for 12 h under UV irradiation, and the pesticide concentrations were measured at 2 h intervals after UV irradiation. The results showed a clear effect of UV light on the pesticides photodegradations that was both a wavelength- and time-dependent effect. Photolysis was more effective at λ = 306 nm than at λ = 254 nm. Furthermore, TiO<sub>2</sub> addition (0.001 g/10 mL) increased the degradation at both tested wavelengths and hence could be considered a potential catalyst for both pesticide degradations. Deltamethrin was more sensitive to UV light than dieldrin under all conditions.Mohamed H. EL-SaeidModhi O. AlotaibiMashael AlshabanatKhadiga AlharbiAbeer S. AltowyanMurefah Al-AnazyMDPI AGarticlephotolysiscatalysisdegradationpesticidesUVwastewaterHydraulic engineeringTC1-978Water supply for domestic and industrial purposesTD201-500ENWater, Vol 13, Iss 3080, p 3080 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	photolysis catalysis degradation pesticides UV wastewater Hydraulic engineering TC1-978 Water supply for domestic and industrial purposes TD201-500
spellingShingle	photolysis catalysis degradation pesticides UV wastewater Hydraulic engineering TC1-978 Water supply for domestic and industrial purposes TD201-500 Mohamed H. EL-Saeid Modhi O. Alotaibi Mashael Alshabanat Khadiga Alharbi Abeer S. Altowyan Murefah Al-Anazy Photo-Catalytic Remediation of Pesticides in Wastewater Using UV/TiO<sub>2</sub>
description	One of the most serious environmental concerns worldwide is the consequences of industrial wastes and agricultural usage leading to pesticide residues in water. At present, a wide range of pesticides are used directly to control pests and diseases. However, environmental damage is expected even at their low concentration because they are sustained a long time in nature, which has a negative impact on human health. In this study, photolysis and photocatalysis of the pesticides dieldrin and deltamethrin were tested at two UV wavelengths (254 and 306 nm) and in different test media (distilled water, wastewater, and agricultural wastewater) to examine their ability to eliminate pesticides. TiO<sub>2</sub> (0.001 g/10 mL) was used as a catalyst for each treatment. The purpose was to determine the influence of UV wavelength, exposure time, and catalyst addition on the pesticide decomposition processes in different water types. Water was loaded with the tested pesticides (2000 µg) for 12 h under UV irradiation, and the pesticide concentrations were measured at 2 h intervals after UV irradiation. The results showed a clear effect of UV light on the pesticides photodegradations that was both a wavelength- and time-dependent effect. Photolysis was more effective at λ = 306 nm than at λ = 254 nm. Furthermore, TiO<sub>2</sub> addition (0.001 g/10 mL) increased the degradation at both tested wavelengths and hence could be considered a potential catalyst for both pesticide degradations. Deltamethrin was more sensitive to UV light than dieldrin under all conditions.
format	article
author	Mohamed H. EL-Saeid Modhi O. Alotaibi Mashael Alshabanat Khadiga Alharbi Abeer S. Altowyan Murefah Al-Anazy
author_facet	Mohamed H. EL-Saeid Modhi O. Alotaibi Mashael Alshabanat Khadiga Alharbi Abeer S. Altowyan Murefah Al-Anazy
author_sort	Mohamed H. EL-Saeid
title	Photo-Catalytic Remediation of Pesticides in Wastewater Using UV/TiO<sub>2</sub>
title_short	Photo-Catalytic Remediation of Pesticides in Wastewater Using UV/TiO<sub>2</sub>
title_full	Photo-Catalytic Remediation of Pesticides in Wastewater Using UV/TiO<sub>2</sub>
title_fullStr	Photo-Catalytic Remediation of Pesticides in Wastewater Using UV/TiO<sub>2</sub>
title_full_unstemmed	Photo-Catalytic Remediation of Pesticides in Wastewater Using UV/TiO<sub>2</sub>
title_sort	photo-catalytic remediation of pesticides in wastewater using uv/tio<sub>2</sub>
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/135bc4fef473408c87c233c1396807ed
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Photo-Catalytic Remediation of Pesticides in Wastewater Using UV/TiO<sub>2</sub>

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