Uranium bioleaching from low-grade carbonaceous-siliceous-argillaceous type uranium ore using an indigenous Acidithiobacillus ferrooxidans
Uranium bioleaching from low-grade carbonaceous-siliceous-argillaceous type uranium ore using an indigenous Acidithiobacillus ferrooxidans
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DOI：
10.1007/s10967-018-5957-3
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发表时间：
2018-06
影响因子：
1.6
通讯作者：
Xuegang Wang;Peng Li;Yajie Liu;Zhanxue Sun;L. Chai;Xiaobo Min;Yadan Guo;Z. Zheng;Yong Ke;Yan-jie Liang
中科院分区：
文献类型：
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作者：
Xuegang Wang;Peng Li;Yajie Liu;Zhanxue Sun;L. Chai;Xiaobo Min;Yadan Guo;Z. Zheng;Yong Ke;Yan-jie Liang
我们评估了生物浸出铀的有效性，从低品位的碳硅泥型铀矿石使用土著铁氧化细菌，嗜酸氧化亚铁硫杆菌，从当地铀矿石中分离。考察了初始酸度、矿浆浓度和料液中亚铁离子浓度等因素的影响。铀（U3 O 8）含量为0.036%（重量）。以铀矿石酸化浸出液为介质，亚铁离子初始浓度为3g/L，pH值为1.7，矿浆浓度为20%为最佳条件，溶解铀的最大回收率为85.14%。因此，该方法适用于使用细菌浸出从低品位CSA矿石中回收铀。
We evaluated the effectiveness of bioleaching uranium from a low-grade carbonaceous-siliceous-argillaceous type uranium ore using an indigenous iron-oxidizing bacteria, Acidithiobacillus ferrooxidans, isolated from local uranium ore. The effects of initial acidity, pulp density and ferrous ion concentration of the feed solution were investigated. The uranium (U3O8) content was 0.036% by weight. Using uranium ore acidified leachate as medium with initial ferrous ion concentrations of 3 g/L, pH 1.7 and pulp density of 20% as optimal conditions, the maximum rate of dissolved uranium recovery was 85.14%. This approach is thus, suitable for recovering uranium from low-grade CSA ore using bacterial leaching.