Abstract
The anaerobic microcosms amended with 30 mM bicarbonate and without bicarbonate were established, respectively, and the reduction of U(VI) in the microcosms by functionalized indigenous microbial communities was investigated. Results of the chemical extraction and XANES analysis showed that the proportions of U(IV) in the microcosms amended with bicarbonate were 10 % lower than without bicarbonate at day 46. The amount of Cellulomonadaceae, Desulfovibrionaceae, Peptococcaceae and Veillonellaceae amended with bicarbonate was lower than without bicarbonate, so the reduction of U(VI) was less. The experimental results show that the high concentration bicarbonate has a significantly inhibitory effect on the reduction of U(VI).
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Acknowledgments
This research was supported by the Defense Industrial Technology Development Program (B3720132001), National Natural Science Foundation of China (U1401231 and 11305087), Program of Scientific Research Foundation of Education Department of Hunan Province (14B150).
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Dianxin Li and Nan Hu have contributed equally to this work.
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Li, D., Hu, N., Ding, D. et al. An experimental study on the inhibitory effect of high concentration bicarbonate on the reduction of U(VI) in groundwater by functionalized indigenous microbial communities. J Radioanal Nucl Chem 307, 1011–1019 (2016). https://doi.org/10.1007/s10967-015-4427-4
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DOI: https://doi.org/10.1007/s10967-015-4427-4