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Polymerization of micropollutants in natural aquatic environments: A review
Zhong, Chen1,2,3; Zhao, He1,2; Cao, Hongbin1,2; Huang, Qingguo4
2019-11-25
Source PublicationSCIENCE OF THE TOTAL ENVIRONMENT
ISSN0048-9697
Volume693Pages:21
AbstractMicropollutants with high ecotoxicological risks are frequently detected in aquatic environments, which has aroused great concern in recent years. Humification is one of the most important natural detoxification processes of aquatic micropollutants, and the core reactions of this process are polymerization and coupling. During humification, micropollutants are incorporated into the macrostructures of humic substances and precipitated from aqueous systems into sediments. However, the similarities and differences among the polymerization/coupling pathways of micropollutants in different oxidative systems have not been systematically summarized in a review. This article reviews the current knowledge on the weak oxidation-induced spontaneous polymerization/coupling transformation of micropollutants. First, four typical weak oxidative conditions for the initiation of micropollutant polymerization reactions in aquatic environments are compared: enzymatic catalysis, biomimetic catalysis, metal oxide oxidation, and photo-initiated oxidation. Second, three major subsequent spontaneous transformation pathways of micropollutants are elucidated: radical polymerization, nucleophilic addition/substitution and cyclization. Different solution conditions are also summarized. Furthermore, the importance of toxicity evolution during the weak oxidation-induced coupling/polymerization of micropollutants is particularly emphasized. This review provides a new perspective for the transformation mechanism and pathways of micropollutants from aquatic systems into sediments and the atmosphere and offers theoretical support for developing micropollutant control technologies. (C) 2019 Elsevier B.V. All rights reserved.
KeywordWeak oxidation systems Single-electron oxidation Nucleophilic addition Cyclization
DOI10.1016/j.scitotenv.2019.133751
Language英语
WOS KeywordPEROXIDASE-MEDIATED REMOVAL ; LACCASE-CATALYZED TRANSFORMATION ; DISSOLVED ORGANIC-MATTER ; SOIL HUMIC SUBSTANCES ; DIPHENYL ETHERS PBDES ; PARA ARSANILIC ACID ; DIBENZO-P-DIOXINS ; BISPHENOL-A ; HORSERADISH-PEROXIDASE ; WASTE-WATER
Funding ProjectStrategic Priority Research Program of the Chinese Academy of Sciences[XDA23010400] ; National Natural Science Foundation of China[51978643] ; Youth Innovation Promotion Association, CAS[2014037]
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
Funding OrganizationStrategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; Youth Innovation Promotion Association, CAS
WOS IDWOS:000489694700087
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/31071
Collection中国科学院过程工程研究所
Corresponding AuthorZhao, He
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Natl Key Lab Biochem Engn, Beijing, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, Beijing Engn Res Ctr Proc Pollut Control, Beijing, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Georgia Inst Technol, Sch Civil & Environm Engn, Atlanta, GA 30332 USA
Recommended Citation
GB/T 7714
Zhong, Chen,Zhao, He,Cao, Hongbin,et al. Polymerization of micropollutants in natural aquatic environments: A review[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2019,693:21.
APA Zhong, Chen,Zhao, He,Cao, Hongbin,&Huang, Qingguo.(2019).Polymerization of micropollutants in natural aquatic environments: A review.SCIENCE OF THE TOTAL ENVIRONMENT,693,21.
MLA Zhong, Chen,et al."Polymerization of micropollutants in natural aquatic environments: A review".SCIENCE OF THE TOTAL ENVIRONMENT 693(2019):21.
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