Study on removing selenate from groundwater by autohydrogenotrophic microorganisms

被引：0
作者：
Siqing Xia
Shuang Shen
Jun Liang
Xiaoyin Xu
机构：
[1] Tongji University,State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering
来源：
Frontiers of Environmental Science & Engineering | 2013年 / 7卷
关键词：
autohydrogenotrophic; selenate; hydrogen; groundwater;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Performance of autohydrogenotrophic bacteria for bio-reduction of selenate (Se(VI)) under anaerobic conditions was investigated with batch experiments. Results showed Se(VI) was bio-reduced to selenite (Se(IV)) as an intermediate product, and then to elemental selenium (Se0). Reduction kinetics could be described by the pseudo-first-order model. In particular, the influences of pH value and temperature on Se(VI) reduction by autohydrogentrophic organisms were examined. The high degradation rate was achieved at pH 7.0 to 8.0; and the best reduction temperature was between 25°C and 35°C. This study is of help for treating groundwater with selenium contamination by autohydrogenotrophic bacteria as well as its reactor development.
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页码：552 / 558
页数：6
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