期刊
WATER RESEARCH
卷 44, 期 7, 页码 2276-2282出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.watres.2009.12.023
关键词
Aerobic biodegradation; cis-1,2-dichloroethene; Chloroethenes; Inhibition; Vinyl chloride
资金
- German Academic Exchange Service (DAAD)
- German Ministry of Education and Research (BMBF)
The presence of other chloroethenes influences aerobic metabolic biodegradation of cis-1,2-dichloroethene (cDCE). A new metabolically cDCE degrading enrichment culture was identified as also being capable of degrading vinyl chloride (VC), but not 1,1-dichloroethene (1,1DGE), trans-1,2-dichloroethene (tDCE), trichloroethene (TCE), or tetrachloroethene (PCE). The fastest degradation of cDCE was observed in the absence of any other chloroethene. In the presence of a second chloroethene (40-90 mu M), the rate of cDCE (60 AM) degradation decreased in the following order: cDCE (+PCE) > cDCE (+tDCE) > cDCE (+VC)> cDCE (+1,1DCE) approximate to cDCE (+TCE). With increasing concentrations of VC, ranging from 10 to 110 mu M, the rate of cDCE (60 mu M) degradation decreased. This study demonstrates that the inhibiting effects of chloroethene mixtures have to be considered during laboratory studies and bioremediation approaches based on metabolic cDCE degradation. (C) 2009 Elsevier Ltd. All rights reserved.
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