Enhanced formation of trihalomethane disinfection byproducts from halobenzoquinones under combined UV/chlorine conditions
文献类型：期刊论文
| 作者 | Zhao, He2,3; Huang, Ching-Hua3; Zhong, Chen2; Du, Penghui2,4; Sun, Peizhe1,3 |
| 刊名 | FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING
 |
| 出版日期 | 2022-06-01 |
| 卷号 | 16期号:6页码:11 |
| 关键词 | Halobenzoquinone Trihalomethane Chlorine disinfection UV irradiation Disinfection byproducts Combined UV/chlorine |
| ISSN号 | 2095-2201 |
| DOI | 10.1007/s11783-021-1510-7 |
| 英文摘要 | Halobenzoquinones (HBQs) are highly toxic disinfection byproducts (DBPs) and are also precursors of other DBPs such as trihalomethanes (THMs). The formation of THMs from HBQs during chlorine-only and UV/chlorine processes with or without bromide was investigated experimentally. Density functional theory (DFT) reactivity descriptors were also applied to predict the nucleophilic/electrophilic reactive sites on HBQs and intermediates. The results were combined to explain the different behaviors of 2,6-dichloro-1,4-benzoquinone (2,6-DCBQ) and tetrachloro-1,4-benzoquinone (TCBQ) and to propose mechanism for the promoting roles of UV and hydroxylation of HBQs in THMs formation. Under UV/chlorine, UV significantly enhanced THMs formation from 2,6-DCBQ compared to chlorine-only, mainly due to the production of OH-DCBQ*. Excited 2,6-DCBQ* by UV benefited nucleophilic hydrolysis to produce OH-DCBQ*, which favored electrophilic attack by chlorine, thereby inducing more THMs formation. UV/chlorine modestly promoted THMs formation from TCBQ compared to chlorine-only. Hydroxylation of TCBQ and UV irradiation were both important in promoting THMs formation due to the high electrophilic property of OH-TCBQ and TCBQ*. Meanwhile, hydroxylation of HBQs and CHCl3 formation were enhanced at higher pH. This work suggested that enhanced formation of THMs from HBQs should be considered in the application of combined UV and chlorine processes. |
| WOS关键词 | MEDIUM-PRESSURE UV ; CHLOROFORM FORMATION ; BROMO-BENZOQUINONES ; CHLORINE TREATMENT ; OXIDATION PROCESS ; ORGANIC-MATTER ; DEGRADATION ; TRANSFORMATION ; WATER ; INACTIVATION |
| 资助项目 | National Natural Science Foundation of China[51978643] ; Youth Innovation Promotion Association, CAS[2014037] |
| WOS研究方向 | Engineering ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000706141500001 |
| 出版者 | HIGHER EDUCATION PRESS |
| 资助机构 | National Natural Science Foundation of China ; Youth Innovation Promotion Association, CAS |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/50524]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Huang, Ching-Hua |
| 作者单位 | 1.Tianjin Univ, Sch Environm Sci & Engn, Tianjin 300072, Peoples R China 2.Chinese Acad Sci, Beijing Engn Res Ctr Proc Pollut Control, Inst Proc Engn, Div Environm Technol & Engn, Beijing 100190, Peoples R China 3.Georgia Inst Technol, Sch Civil & Environm Engn, Atlanta, GA 30332 USA 4.Southern Univ Sci & Technol, Sch Environm Sci & Engn, State Environm Protect Key Lab Integrated Surface, Shenzhen 518055, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhao, He,Huang, Ching-Hua,Zhong, Chen,et al. Enhanced formation of trihalomethane disinfection byproducts from halobenzoquinones under combined UV/chlorine conditions[J]. FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING,2022,16(6):11. |
| APA | Zhao, He,Huang, Ching-Hua,Zhong, Chen,Du, Penghui,&Sun, Peizhe.(2022).Enhanced formation of trihalomethane disinfection byproducts from halobenzoquinones under combined UV/chlorine conditions.FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING,16(6),11. |
| MLA | Zhao, He,et al."Enhanced formation of trihalomethane disinfection byproducts from halobenzoquinones under combined UV/chlorine conditions".FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING 16.6(2022):11. |
入库方式： OAI收割
来源：过程工程研究所
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