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Enhanced uranium bioleaching high-fluorine and low-sulfur uranium ore by a mesophilic acidophilic bacterial consortium with pyrite |
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| Authors: | Zhou Zhongkui Yang Zhihui Sun Zhanxue Liu Yajie Chen Gongxin Liao Qi Xu Lingling Wang Xuegang Li Jiang Zhou Yipeng |
| Affiliation: | 1.Institute of Environmental Science and Engineering, School of Metallurgy and Environment, Central South University, Changsha, 410083, Hunan, China ;2.State Key Laboratory of Nuclear Resources and Environment, East China University of Technology, Nanchang, 330013, Jiangxi, China ;3.Chinese National Engineering Research Center for Control and Treatment of Heavy Metal Pollution, Changsha, 410083, Hunan, China ; |
| Abstract: | The high level of fluorine and low sulfur in the ore could significantly undermine the bioleaching effectiveness. Here, a strategy to improve the bioleaching efficiency by introducing fluoride-resistant mesophilic eosinophils coupled with pyrite supplement was investigated in a bioleaching system with such ore. The results of column and heap bioleaching showed that 89.25% and 90.40% of uranium were recovered with the consortium and pyrite addition, which increased the uranium leaching rates by 13.22% and 8.96% as compared with the sulfuric acid leaching. Hence, it provides a method to improve uranium bioleaching efficiency of the high-fluorine and low-sulfur uranium ore by the consortium adding pyrite. |
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