Impact of Photolysis and TiO<sub>2</sub> on Pesticides Degradation in Wastewater
Pesticide residues are harmful to the environment and human and animal health even at low levels because of long-term bioaccumulation. In this study, photolysis was applied to treat three representative water samples: aqueous atrazine and dimethoate solutions as target pesticides, as well as wastewa...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-02-01
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| Series: | Water |
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| Online Access: | https://www.mdpi.com/2073-4441/13/5/655 |
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| author | Mohamed H. EL-Saeid Modhi. O. Alotaibi Mashael Alshabanat Murefah Mana AL-Anazy Khadijah R. Alharbi Abeer S. Altowyan |
| author_facet | Mohamed H. EL-Saeid Modhi. O. Alotaibi Mashael Alshabanat Murefah Mana AL-Anazy Khadijah R. Alharbi Abeer S. Altowyan |
| author_sort | Mohamed H. EL-Saeid |
| collection | DOAJ |
| description | Pesticide residues are harmful to the environment and human and animal health even at low levels because of long-term bioaccumulation. In this study, photolysis was applied to treat three representative water samples: aqueous atrazine and dimethoate solutions as target pesticides, as well as wastewater and agriculture wastewater containing pesticide residue. It was performed using ultraviolet (UV) irradiation at two wavelengths (254 and 306 nm) with exposure times ranging from 2 to 12 h in the presence and absence of a photocatalyst to identify the optimal degradation conditions. Extraction and analyzation process were performed by the Quick Easy Cheap Effective Rugged Safe (QuEChERS) methods and gas chromatography–tandem mass spectrometry with triple quadrupole detector (GC–MSMS/TQD), respectively. Photodegradation increased with an increase in exposure time and the TiO2 catalyst was beneficial for degradation. Both selected irradiation wavelengths were effective, although the wavelength of λ = 306 nm was the most efficient. |
| first_indexed | 2024-03-09T06:11:28Z |
| format | Article |
| id | doaj.art-4cffd07b56be41668c34887b409fcba9 |
| institution | Directory Open Access Journal |
| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-03-09T06:11:28Z |
| publishDate | 2021-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Water |
| spelling | doaj.art-4cffd07b56be41668c34887b409fcba92023-12-03T11:57:34ZengMDPI AGWater2073-44412021-02-0113565510.3390/w13050655Impact of Photolysis and TiO<sub>2</sub> on Pesticides Degradation in WastewaterMohamed H. EL-Saeid0Modhi. O. Alotaibi1Mashael Alshabanat2Murefah Mana AL-Anazy3Khadijah R. Alharbi4Abeer S. Altowyan5Chromatographic Analysis Unit, Soil Science Department, College of Food & Agricultural Sciences, King Saud University, P.O. Box 2460, Riyadh 11451, Saudi ArabiaDepartment of Biology, College of Science, Princess Nourah Bint Abdulrahman University, Riyadh 11564, Saudi ArabiaDepartment of Chemistry, College of Science, Princess Nourah Bint Abdulrahman University, Riyadh 11564, Saudi ArabiaDepartment of Chemistry, College of Science, Princess Nourah Bint Abdulrahman University, Riyadh 11564, Saudi ArabiaDepartment of Biology, College of Science, Princess Nourah Bint Abdulrahman University, Riyadh 11564, Saudi ArabiaDepartment of Physics, College of Science, Princess Nourah Bint Abdulrahman University, Riyadh 11564, Saudi ArabiaPesticide residues are harmful to the environment and human and animal health even at low levels because of long-term bioaccumulation. In this study, photolysis was applied to treat three representative water samples: aqueous atrazine and dimethoate solutions as target pesticides, as well as wastewater and agriculture wastewater containing pesticide residue. It was performed using ultraviolet (UV) irradiation at two wavelengths (254 and 306 nm) with exposure times ranging from 2 to 12 h in the presence and absence of a photocatalyst to identify the optimal degradation conditions. Extraction and analyzation process were performed by the Quick Easy Cheap Effective Rugged Safe (QuEChERS) methods and gas chromatography–tandem mass spectrometry with triple quadrupole detector (GC–MSMS/TQD), respectively. Photodegradation increased with an increase in exposure time and the TiO2 catalyst was beneficial for degradation. Both selected irradiation wavelengths were effective, although the wavelength of λ = 306 nm was the most efficient.https://www.mdpi.com/2073-4441/13/5/655photolysispesticidesdegradationwastewateragriculture wastewaterTiO<sub>2</sub> |
| spellingShingle | Mohamed H. EL-Saeid Modhi. O. Alotaibi Mashael Alshabanat Murefah Mana AL-Anazy Khadijah R. Alharbi Abeer S. Altowyan Impact of Photolysis and TiO<sub>2</sub> on Pesticides Degradation in Wastewater Water photolysis pesticides degradation wastewater agriculture wastewater TiO<sub>2</sub> |
| title | Impact of Photolysis and TiO<sub>2</sub> on Pesticides Degradation in Wastewater |
| title_full | Impact of Photolysis and TiO<sub>2</sub> on Pesticides Degradation in Wastewater |
| title_fullStr | Impact of Photolysis and TiO<sub>2</sub> on Pesticides Degradation in Wastewater |
| title_full_unstemmed | Impact of Photolysis and TiO<sub>2</sub> on Pesticides Degradation in Wastewater |
| title_short | Impact of Photolysis and TiO<sub>2</sub> on Pesticides Degradation in Wastewater |
| title_sort | impact of photolysis and tio sub 2 sub on pesticides degradation in wastewater |
| topic | photolysis pesticides degradation wastewater agriculture wastewater TiO<sub>2</sub> |
| url | https://www.mdpi.com/2073-4441/13/5/655 |
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