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Characterization and uranium bioleaching performance of mixed iron- and sulfur-oxidizers versus iron-oxidizers |
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| Authors: | Li Qian Sun Jing Ding Dexin Wang Qingliang Shi Wenge Hu Eming Wang Xingxing Jiang Xiaoyu |
| Institution: | 1.Key Discipline Laboratory for National Defence of Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang, 421001, China ;2.School of Nuclear Resources Engineering, University of South China, Hengyang, 421001, China ;3.School of Minerals Processing and Bioengineering, Central South University, Changsha, 410083, China ; |
| Abstract: | In order to develop and apply mixed iron- and sulfur-oxidizers in uranium bioleaching, the characteristics of a mixed iron- and sulfur-oxidizing consortium (Consortium ISO) were comparatively investigated versus an iron-oxidizing consortium (Consortium IO). The results showed, the Consortium ISO exerted stronger oxidative ability and acid-producing ability than Consortium IO did. The synergy of sulfur-oxidizers and iron-oxidizers could change the structure and properties of the passivation substance, and work positively for eliminating the accumulation of passivation substance. In the bioleaching process, the uranium bioleaching experiments showed the recovery percentage of uranium reached 99.5% with Consortium ISO, 6.3% more than that of Consortium IO. |
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