The adsorption of U(VI) by albite during acid in-situ leaching mining of uranium

被引：0
|
作者：
Peng Wang
Kaixuan Tan
Yongmei Li
Wenzhou Xiao
Zhenzhong Liu
Wanyu Tan
Yang Xu
机构：
[1] University of South China,School of Resource Environment and Safety Engineering
[2] Hunan City University,School of Civil Engineering
来源：
Journal of Radioanalytical and Nuclear Chemistry | 2022年 / 331卷
关键词：
Acid in-situ leaching; Sandstone uranium ore; Albite; Adsorption; Uranyl;
D O I：
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中图分类号：
学科分类号：
摘要：
Uranium adsorption experiment was conducted to study the influencing factors and the adsorption mechanisms. The results show that the acidified albite hardly absorbs U(VI) at pH < 4, indicating that it doesn’t affect U(VI) recovery in in-situ leaching process. However, the adsorption percentage of U(VI) quickly increased to 84.9% at pH = 6, then, gradually decreased, with a value always above 40%. Therefore, the acidified albite can prevent U(VI) migration in the post-mining groundwater to a certain extend. The maximum adsorption capacity is 0.520 mg/g. The adsorption of U(VI) on the acidified albite is dominated by complexation and charge attraction.
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页码：2185 / 2193
页数：8
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