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首页> 外文期刊>Frontiers of environmental science & eng >Study on removing selenate from groundwater by autohydrogenotrophic microorganisms
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Study on removing selenate from groundwater by autohydrogenotrophic microorganisms

机译：自氢营养微生物从地下水中去除硒酸盐的研究

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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 (Se~0). 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℃ and 35℃. This study is of help for treating groundwater with selenium contamination by autohydrogenotrophic bacteria as well as its reactor development.
机译：通过分批实验研究了自氢营养菌在厌氧条件下生物还原硒酸盐（Se（Ⅵ））的性能。结果表明，Se（Ⅵ）被生物还原为中间产物亚硒酸盐（Se（Ⅳ）），然后被生物还原为元素硒（Se〜0）。还原动力学可以用拟一阶模型描述。特别地，考察了pH值和温度对自养氢生物还原Se（Ⅵ）的影响。在pH 7.0至8.0时达到了高降解率；最佳还原温度为25℃〜35℃。这项研究有助于处理自氢营养细菌对硒污染的地下水及其反应器的开发。

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  • 来源
    《Frontiers of environmental science & eng》 |2013年第4期|552-558|共7页
  • 作者

    Siqing XIA; Shuang SHEN; Jun LIANG; Xiaoyin XU;

  • 作者单位

    State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering,Tongji University, Shanghai 200092, China;

    State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering,Tongji University, Shanghai 200092, China;

    State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering,Tongji University, Shanghai 200092, China;

    State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering,Tongji University, Shanghai 200092, China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    autohydrogenotrophic; selenate; hydrogen; groundwater;

    机译：自氢营养的硒氢;地下水;

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