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.
引用
收藏
页码：552 / 558
页数：6
相关论文
共 90 条
  • [1] Gillespie R B(1986)Effects of tissue concentrations of selenium on reproduction by bluegills Transactions of the American Fisheries Society 115 208-213
  • [2] Baumann P C(1999)Selenium reduction by a denitrifying consortium Biotechnology and Bioengineering 62 479-484
  • [3] Rege M A(2004)Interactions of selenate with copper(I) oxide particles Langmuir 20 6335-6343
  • [4] Yonge D R(2004)Removal of selenate by Fe and NiFe nanosized particles Industrial & Engineering Chemistry Research 43 4922-4934
  • [5] Mendoza D P(2011)Reduction and adsorption mechanisms of selenate by zero-valent iron and related iron corrosion Applied Catalysis B: Environmental 104 185-192
  • [6] Petersen J N(1997)Adsorption and ion exchange of some groundwater anion contaminants in an amine modified coconut coir Water Science and Technology 35 89-95
  • [7] Bereded-Samuel Y(2007)Removal of selenium (VI) from aqueous solution with polyamine-type weakly basic ion exchange resin Separation Science and Technology 42 3155-3167
  • [8] Johnstone D L(2011)Renewable energy powered membrane technology: salt and inorganic contaminant removal by nanofiltration/reverse osmosis Journal of Membrane Science 369 188-195
  • [9] Apel W A(1997)Bioremediation of selenium in soil and water Journal of Soil Science 162 692-702
  • [10] Barnes J M(2000)Factors affecting soluble selenium removal by a selenate-reducing bacterium Biotechnology and Bioengineering 89 528-533
123456789