Abiotic and biotic transformations of 1,1,1-trichloroethane under methanogenic conditions
Abiotic and biotic transformations of 1,1,1-trichloroethane under methanogenic conditions
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DOI：
10.1021/es00165a008
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发表时间：
1987-12
影响因子：
11.4
通讯作者：
T. Vogel;P. McCarty
中科院分区：
文献类型：
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作者：
T. Vogel;P. McCarty
常见的工业溶剂1，1，1-三氯乙烷（TCA）是地下水中最常见的污染物之一。三氯乙酸在地下水中的命运因其可能经历的不同的非生物和生物转化而变得复杂。TCA的非生物转化可产生1，1-二氯乙烯（1，1-DCE）和乙酸的混合物，如其他人所示。本研究证实，TCA可以通过还原脱卤生物转化为1，1-二氯乙烷（1，1-DCA）和氯乙烷（CA）在产甲烷条件下。此外，还证实了1，1-DCE还原脱卤为氯乙烯（VC）。这项研究表明，这些转换可以发生化学计量。此外，在类似的产甲烷条件下，（/sup 14/C）TCA、（/sup 14/C）-1，1-DCA、（/sup 14/C）-1，1-DCE、（/sup 14/C）CA和（/sup 14/C）VC至少部分矿化为/sup 14/CO/sub 2/。参考文献23，图3，表4。
A common industrial solvent, 1,1,1-trichloroethane (TCA), is one of the most frequently found contaminants in ground water. The fate of TCA in ground water is complicated by the different possible abiotic and biotic transformations that it may undergo. Abiotic transformation of TCA can result in a mixture of 1,1-dichloro-ethylene (1,1-DCE) and acetic acid, as shown by others. This study confirms that TCA can be biotransformed by reductive dehalogenation to 1,1-dichloroethane (1,1-DCA) and chloroethane (CA) under methanogenic conditions. Also, reductive dehalogenation of 1,1-DCE to vinyl chloride (VC) is confirmed. This study demonstrates that these transformations can occur stoichiometrically. In addition, (/sup 14/C)TCA, (/sup 14/C)-1,1-DCA, (/sup 14/C)-1,1-DCE, (/sup 14/C)CA, and (/sup 14/C)VC were at least partially mineralized to /sup 14/CO/sub 2/ under similar methanogenic conditions.23 references, 3 figures, 4 tables.