葡萄糖酸盐作为氯乙烯还原脱氯氢供体的普遍性

Yuta Fujii, K. Mitsuka, Hiroki Ogata, D. Inoue, M. Ike
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引用次数: 0

摘要

本研究的目的是评估葡萄糖酸盐作为地下水中氯乙烯还原脱氯的氢供体的普遍性。为此,我们以5个不同地点的地下水样品为微生物种子,葡萄糖酸盐为氢供体,进行了三氯乙烯(TCE)降解实验。虽然每种地下水的TCE脱氯率不同,但参与还原性脱氯的基因数量增加,所有地下水样品的氯乙烯都完全脱氯。此外,对于TCE完全还原脱氯时间较长的地下水样品,也可以通过反复补充葡萄糖酸盐进行处理,从而快速完成TCE的完全脱氯,而不会积累有害代谢物氯乙烯。这些结果表明,葡萄糖酸盐是一种通用的氢供体,可以使氯乙烯完全还原脱氯。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Universality of Gluconate as a Hydrogen Donor for Reductive Dechlorination of Chloroethenes
The objective of this study was to assess the universality of gluconate as a hydrogen donor for the reductive dechlorination of chloroethenes in groundwater. For this, we conducted trichloroethene (TCE) degradation experiments using five groundwater samples collected from different chloroethenes-contaminated sites as the microbial seed and gluconate as the hydrogen donor. Although the TCE dechlorination rate was different in each groundwater, the number of genes involved in reductive dechlorination increased and chloroethenes were completely dechlorinated in all groundwater samples. In addition, the groundwater sample whose complete reductive dechlorination of TCE took a long time could also be treated by repeated gluconate supplementation, which resulted in rapid complete TCE dechlorination without the accumulation of chloroethene, a harmful metabolite. These results indicate that gluconate is a universal hydrogen donor that enables the complete reductive dechlorination of chloroethenes.
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