UV activated sodium percarbonate to accelerate degradation of atrazine: Mechanism, intermediates, and evaluation on residual toxicity by metabolomics
Efficient and safe removal of widely used herbicides such as atrazine has become a recent hotspot. Herein, UV driven sodium percarbonate system (UV/SPC) was established to have many advantages in remediation of atrazine contamination. The mechanism and environmental risk of intermediates were explor...
| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-08-01
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| Series: | Environment International |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S016041202200304X |
| _version_ | 1811289382703857664 |
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| author | Xiaolong Yu Xu Jin Nan Wang Qian Zheng Yuanyuan Yu Jin Tang Luyu Wang Rujin Zhou Jianteng Sun Lizhong Zhu |
| author_facet | Xiaolong Yu Xu Jin Nan Wang Qian Zheng Yuanyuan Yu Jin Tang Luyu Wang Rujin Zhou Jianteng Sun Lizhong Zhu |
| author_sort | Xiaolong Yu |
| collection | DOAJ |
| description | Efficient and safe removal of widely used herbicides such as atrazine has become a recent hotspot. Herein, UV driven sodium percarbonate system (UV/SPC) was established to have many advantages in remediation of atrazine contamination. The mechanism and environmental risk of intermediates were explored, which provided information for the feasibility of UV/SPC. The degradation efficiency of atrazine was significantly enhanced as the increasing dosage of SPC. Quenching assay identified that •OH and CO3•− were committed to degrading atrazine. Humic acid and HPO42− remarkably inhibited atrazine degradation. Several intermediates were generated through the dealkylation, dechlorination-hydroxylation, alkylic-hydroxylation, alkyl oxidation and olefination reactions. Toxicity prediction proved that acute toxicity and bioaccumulation of intermediates were mitigated comparing with atrazine. Based on metabolomics results, the alteration of key metabolites such as citrate, L-kynurenine, malic acid, putrescine, glutamine, spermine, ethanolamine and phytosphingosine in various metabolic pathways of E.coli verified that the toxicity of atrazine was weakened after UV/SPC treatment. The application of UV/SPC on atrazine removal in real waters was influenced by environmental factors, and might be improved through coupling with other treatment technologies. |
| first_indexed | 2024-04-13T03:53:55Z |
| format | Article |
| id | doaj.art-f2f1070bade14d838272e0fbb3e0ecb6 |
| institution | Directory Open Access Journal |
| issn | 0160-4120 |
| language | English |
| last_indexed | 2024-04-13T03:53:55Z |
| publishDate | 2022-08-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Environment International |
| spelling | doaj.art-f2f1070bade14d838272e0fbb3e0ecb62022-12-22T03:03:42ZengElsevierEnvironment International0160-41202022-08-01166107377UV activated sodium percarbonate to accelerate degradation of atrazine: Mechanism, intermediates, and evaluation on residual toxicity by metabolomicsXiaolong Yu0Xu Jin1Nan Wang2Qian Zheng3Yuanyuan Yu4Jin Tang5Luyu Wang6Rujin Zhou7Jianteng Sun8Lizhong Zhu9Guangdong Provincial Key Laboratory of Petrochemical Pollution Processes and Control, School of Environmental Science and Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, Guangdong, China; Guangdong Provincial Key Laboratory of Agricultural & Rural Pollution Abatement and Environmental Safety, Guangzhou 510000, Guangdong, ChinaCollege of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, ChinaDepartment of Physics, Jinan University, Guangzhou, Guangdong 510632, ChinaGuangdong Provincial Key Laboratory of Agricultural & Rural Pollution Abatement and Environmental Safety, Guangzhou 510000, Guangdong, ChinaGuangdong Provincial Key Laboratory of Petrochemical Pollution Processes and Control, School of Environmental Science and Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, Guangdong, ChinaGuangdong Provincial Key Laboratory of Petrochemical Pollution Processes and Control, School of Environmental Science and Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, Guangdong, ChinaGuangdong Provincial Key Laboratory of Petrochemical Pollution Processes and Control, School of Environmental Science and Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, Guangdong, ChinaGuangdong Provincial Key Laboratory of Petrochemical Pollution Processes and Control, School of Environmental Science and Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, Guangdong, ChinaGuangdong Provincial Key Laboratory of Petrochemical Pollution Processes and Control, School of Environmental Science and Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, Guangdong, China; Corresponding author.Department of Environmental Science, Zhejiang University, Hangzhou, Zhejiang 310058, ChinaEfficient and safe removal of widely used herbicides such as atrazine has become a recent hotspot. Herein, UV driven sodium percarbonate system (UV/SPC) was established to have many advantages in remediation of atrazine contamination. The mechanism and environmental risk of intermediates were explored, which provided information for the feasibility of UV/SPC. The degradation efficiency of atrazine was significantly enhanced as the increasing dosage of SPC. Quenching assay identified that •OH and CO3•− were committed to degrading atrazine. Humic acid and HPO42− remarkably inhibited atrazine degradation. Several intermediates were generated through the dealkylation, dechlorination-hydroxylation, alkylic-hydroxylation, alkyl oxidation and olefination reactions. Toxicity prediction proved that acute toxicity and bioaccumulation of intermediates were mitigated comparing with atrazine. Based on metabolomics results, the alteration of key metabolites such as citrate, L-kynurenine, malic acid, putrescine, glutamine, spermine, ethanolamine and phytosphingosine in various metabolic pathways of E.coli verified that the toxicity of atrazine was weakened after UV/SPC treatment. The application of UV/SPC on atrazine removal in real waters was influenced by environmental factors, and might be improved through coupling with other treatment technologies.http://www.sciencedirect.com/science/article/pii/S016041202200304XAtrazineSodium percarbonateActive radicals speciesDegradation intermediatesMetabolomics analysis |
| spellingShingle | Xiaolong Yu Xu Jin Nan Wang Qian Zheng Yuanyuan Yu Jin Tang Luyu Wang Rujin Zhou Jianteng Sun Lizhong Zhu UV activated sodium percarbonate to accelerate degradation of atrazine: Mechanism, intermediates, and evaluation on residual toxicity by metabolomics Environment International Atrazine Sodium percarbonate Active radicals species Degradation intermediates Metabolomics analysis |
| title | UV activated sodium percarbonate to accelerate degradation of atrazine: Mechanism, intermediates, and evaluation on residual toxicity by metabolomics |
| title_full | UV activated sodium percarbonate to accelerate degradation of atrazine: Mechanism, intermediates, and evaluation on residual toxicity by metabolomics |
| title_fullStr | UV activated sodium percarbonate to accelerate degradation of atrazine: Mechanism, intermediates, and evaluation on residual toxicity by metabolomics |
| title_full_unstemmed | UV activated sodium percarbonate to accelerate degradation of atrazine: Mechanism, intermediates, and evaluation on residual toxicity by metabolomics |
| title_short | UV activated sodium percarbonate to accelerate degradation of atrazine: Mechanism, intermediates, and evaluation on residual toxicity by metabolomics |
| title_sort | uv activated sodium percarbonate to accelerate degradation of atrazine mechanism intermediates and evaluation on residual toxicity by metabolomics |
| topic | Atrazine Sodium percarbonate Active radicals species Degradation intermediates Metabolomics analysis |
| url | http://www.sciencedirect.com/science/article/pii/S016041202200304X |
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