Study of microbial perchlorate reduction: considering of multiple pH, electron acceptors and donors.
Study of microbial perchlorate reduction: considering of multiple pH, electron acceptors and donors.
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DOI：
10.1016/j.jhazmat.2014.10.061
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发表时间：
2015-03
影响因子：
13.6
通讯作者：
Xing Xu;B. Gao;Bo Jin;Hu Zhen;Xiaoyi Wang;Ming Dai
中科院分区：
文献类型：
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作者：
Xing Xu;B. Gao;Bo Jin;Hu Zhen;Xiaoyi Wang;Ming Dai
Bioremediation of perchlorate-cotaminated water by a heterotrophic perchlorate reducing bacterium creates a multiple electron acceptor-donor system. We experimentally determined the perchlorate reduction byAzospirasp. KJ at multiple pH, electron acceptors and donors systems; this was the aim of this study. Perchlorate reduction was drastically inhibited at the pH 6.0, and the maximum reduction of perchlorate byAzospirasp. KJ was observed at pH value of 8.0. Perchlorate reduction was retarded in ClO4−–ClO3−, ClO4−–ClO3−–NO3−,and ClO4−–NO3−acceptor systems, while being completely inhibited by the additional O2in the ClO4−–O2acceptor system. The reduction proceeded as an order of ClO3−, ClO4−, and NO3−in the ClO4−–ClO3−–NO3−system.KS,vmax, andqmaxobtained at different e−acceptor and donor conditions are calculated as 140.5–190.6 mg/L, 8.7–13.2 mg-perchlorate/L-h, and 0.094–0.16 mg-perchlorate/mg-DW-h, respectively.
