Frontiers of Environmental Science & Engineering
>> 2013,
Volume 7,
Issue 4
doi:
10.1007/s11783-013-0531-2
RESEARCH ARTICLE
Study on removing selenate from groundwater by autohydrogenotrophic microorganisms
State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
Available online: 2013-08-01
Next
Previous
Abstract
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 ). 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.
京公网安备 11010502051620号
