Advances in degradation mechanisms of 1,2,3-trichloropropane and remediation technology of contaminated sites.

Yaozhi Zhang; Huijuan Jin; Xiuying LI; Yufang Song; Jun Yan; Yi Yang

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Advances in degradation mechanisms of 1,2,3-trichloropropane and remediation technology of contaminated sites.

Author: Yaozhi ZHANG ¹ ; Huijuan JIN ¹ ; Xiuying LI ¹ ; Yufang SONG ¹ ; Jun YAN ¹ ; Yi YANG ¹
Author Information

1. Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, Liaoning, China.
Publication Type:Journal Article
Keywords: 1,2,3-trichloropropane; biodegradation; organohalide-respiring bacteria; remediation
MeSH: Biodegradation, Environmental; Environmental Restoration and Remediation; Hydrocarbons, Chlorinated; Propane/analogs & derivatives*; Technology
From: Chinese Journal of Biotechnology 2021;37(10):3578-3590
CountryChina
Language:Chinese
Abstract: 1,2,3-trichloropropane (TCP) is an industrially synthesized aliphatic chlorinated hydrocarbon and an intermediate product in the industrial production of epichlorohydrin, which can be used as a precursor for the manufacture of soil fumigant and organic solvents. Due to its biological toxicity, environmental persistence and strong environmental migration ability, 1,2,3-TCP is listed as an emerging organochlorine pollutant in the environment and regulated by many international organizations. Currently, the degradation of 1,2,3-TCP and the remediation of 1,2,3-TCP-contaminated sites receive great attention, but the degradation mechanism of 1,2,3-TCP has not been summarized in depth. This article discussed the origin of 1,2,3-TCP, its environmental impact and ecological effects, and the physical and chemical degradation techniques. This was followed by summarizing the degradation mechanisms of 1,2,3-TCP (e.g., aerobic co-biodegradation, anaerobic biodegradation). Specially, the pathways and mechanisms of microbial biodegradation and transformation of 1,2,3-TCP in anoxic environments (e.g., groundwater) were thoroughly reviewed. The feasibility of using 1,2,3-TCP as an electron acceptor by organohalide-respiring bacteria under anoxic conditions was predicted based on thermodynamic analysis. Last but not least, in situ bioremediation of 1,2,3-TCP contaminated sites was summarized, and prospects for future research were discussed.