A comparison of uranium recovery from low-grade ore by bioleaching and acid leaching
A comparison of uranium recovery from low-grade ore by bioleaching and acid leaching
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DOI：
10.5277/ppmp170111
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发表时间：
2016-12
影响因子：
1.5
通讯作者：
Monika M. Szolucha;A. Chmielewski
中科院分区：
文献类型：
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作者：
Monika M. Szolucha;A. Chmielewski
这项工作的目的是在65天内，在类似的工艺条件下，对铀的生物浸出和酸浸进行比较。实验中使用的低品位铀矿石是从波兰拉多尼奥的“小”垃圾场收集的。在相同的柱中进行了生物浸出和酸浸出研究。从Radoniow矿分离的细菌聚生体被用于生物浸出过程。硫酸和H2 O2作为氧化剂的溶液用于酸浸。在酸浸条件下，31天后铀的提取达到最大值64± 13%w/w。铀的生物浸出在55天后达到75± 15%w/w的最大提取。在这项研究中，试图证明收缩核模型和实验数据之间的关系，绘制铀的分数转换对时间。
The objective of this work was to compare the bioleaching with the acid leaching of uranium under similar process conditions within 65 days. The low-grade uranium ore used in the experiments was collected from Radoniow’s ‘small’ dump, Poland. Bioleaching and acid leaching studies were carried out in identical columns. The isolated bacterial consortium from the Radoniow’s mine was used for the bioleaching process. A solution of sulphuric acid and H2O2 as oxidizing agent was used for the acid leaching. The extraction of uranium under acid leaching conditions reached maximum of 64±13 % w/w after 31 days. The bioleaching of uranium achieved a maximum extraction of 75±15 % w/w after 55 days. In this study an attempt was made to demonstrate the relationship between the shrinking-core model and the experimental data by plotting the fractional conversion of uranium against time.