Chen-Yan Hu, Sheng-Jie Ji, Zheng-Yu Dong, Yi-Hui Wu, Zi-Yi Dong, Li-Li Hu, Xin-Yu Yang, Hao Liu
{"title":"Degradation of acetochlor via the UV/persulfate process: Mechanisms, kinetics, and pathways","authors":"Chen-Yan Hu, Sheng-Jie Ji, Zheng-Yu Dong, Yi-Hui Wu, Zi-Yi Dong, Li-Li Hu, Xin-Yu Yang, Hao Liu","doi":"10.2166/wrd.2024.025","DOIUrl":null,"url":null,"abstract":"\n \n The environmental health risks of acetochlor (ACE) have received widespread attention. The removal of ACE via the ultraviolet/persulfate (UV/PS) process was investigated in this study. The degradation of ACE in the UV/PS process fitted pseudo-first-order kinetics. ACE can be effectively removed in the pH range of 5.0–9.0. In addition, the removal efficiency of ACE increases with the increase in PS concentration. The experimental and calculation results prove that the contributions of UV irradiation, sulfate radicals (SO4•-) and hydroxyl radicals (HO·) were 40, 52.1, and 6.43%, respectively. And the second-order rate constants between SO4•- and HO· with ACE are 3.5 × 109 and 5.6 × 109M−1s−1, respectively. The influences of different water matrices were explored. Both chloride ions and bicarbonate can inhibit the degradation of ACE, while the effects of sulfate ions and nitrate can be negligible. Humic acid (HA) has an inhibitory effect of ACE degradation. The intermediates were detected and the possible degradation pathway of ACE was proposed. The results of this study can provide technical support for the control of ACE in the environment.","PeriodicalId":4,"journal":{"name":"ACS Applied Energy Materials","volume":"107 25","pages":""},"PeriodicalIF":5.4000,"publicationDate":"2024-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Applied Energy Materials","FirstCategoryId":"93","ListUrlMain":"https://doi.org/10.2166/wrd.2024.025","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
The environmental health risks of acetochlor (ACE) have received widespread attention. The removal of ACE via the ultraviolet/persulfate (UV/PS) process was investigated in this study. The degradation of ACE in the UV/PS process fitted pseudo-first-order kinetics. ACE can be effectively removed in the pH range of 5.0–9.0. In addition, the removal efficiency of ACE increases with the increase in PS concentration. The experimental and calculation results prove that the contributions of UV irradiation, sulfate radicals (SO4•-) and hydroxyl radicals (HO·) were 40, 52.1, and 6.43%, respectively. And the second-order rate constants between SO4•- and HO· with ACE are 3.5 × 109 and 5.6 × 109M−1s−1, respectively. The influences of different water matrices were explored. Both chloride ions and bicarbonate can inhibit the degradation of ACE, while the effects of sulfate ions and nitrate can be negligible. Humic acid (HA) has an inhibitory effect of ACE degradation. The intermediates were detected and the possible degradation pathway of ACE was proposed. The results of this study can provide technical support for the control of ACE in the environment.
期刊介绍:
ACS Applied Energy Materials is an interdisciplinary journal publishing original research covering all aspects of materials, engineering, chemistry, physics and biology relevant to energy conversion and storage. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrate knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important energy applications.