期刊
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
卷 24, 期 15, 页码 13262-13283出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s11356-017-8867-y
关键词
Organohalide respiration; Biological reductive dehalogenation; Co-metabolic degradation; Biodegradation; Cis-1,2-dichloroethene; Tetrachloroethene; Trichloroethene; Vinyl chloride
资金
- Grant Agency of the Czech Republic [14-32432S]
- Ministry of Education, Youth and Sports CZ project [LO1201]
- OPR&DI project 'Centre for Nanomaterials, Advanced Technologies and Innovation' [CZ.1.05/2.1.00/01.0005]
Contamination by chloroethenes has a severe negative effect on both the environment and human health. This has prompted intensive remediation activity in recent years, along with research into the efficacy of natural microbial communities for degrading toxic chloroethenes into less harmful compounds. Microbial degradation of chloroethenes can take place either through anaerobic organohalide respiration, where chloroethenes serve as electron acceptors; anaerobic and aerobic metabolic degradation, where chloroethenes are used as electron donors; or anaerobic and aerobic cometabolic degradation, with chloroethene degradation occurring as a by-product during microbial metabolism of other growth substrates, without energy or carbon benefit. Recent research has focused on optimising these natural processes to serve as effective bioremediation technologies, with particular emphasis on (a) the diversity and role of bacterial groups involved in dechlorination microbial processes, and (b) detection of bacterial enzymes and genes connected with dehalogenation activity. In this review, we summarise the different mechanisms of chloroethene bacterial degradation suitable for bioremediation and provide a list of dechlorinating bacteria. We also provide an up-to-date summary of primers available for detecting functional genes in anaerobic and aerobic bacteria degrading chloroethenes metabolically or co-metabolically.
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