| 周新尧,谭凯旋,刘泽华,李咏梅,谭婉玉,李春光,周泉宇,胡佩.雨水作用下铀尾矿中主要污染物的释放特征[J].南华大学学报(自然科学版),2015,29(2):20~24.[ZHOU Xin-yao,TAN Kai-xuan,LIU Ze-hua,LI Yong-mei,TAN Wan-yu,LI Chun-guang,ZHOU Quan-yu,HU Pei.Releasing Characteristics of the Main Pollutants from Uranium Tailings Acting with Rain[J].Journal of University of South China(Science and Technology),2015,29(2):20~24.] |
| 雨水作用下铀尾矿中主要污染物的释放特征 |
| Releasing Characteristics of the Main Pollutants from Uranium Tailings Acting with Rain |
| 投稿时间：2015-03-26 |
| DOI： |
| 中文关键词: 铀尾矿 污染物释放 淋浸 |
| 英文关键词:uranium tailings contaminants release leaching |
| 基金项目:国家自然科学基金资助项目(11275093) |
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| 中文摘要: |
| 以广东某铀矿的堆浸尾矿为研究对象,通过静态和动态淋浸实验,研究了雨水作用下铀尾矿中主要污染物的溶出特征和机制.结果表明,尾矿—水作用过程中有大量H+、铀(U)和硫酸根离子(SO42-)等污染物释放,静态淋浸的浸出液pH变化范围为3.3~3.71,U和SO42-的最大浓度分别为124 mg/L、5.28 g/L；动态淋浸的浸出液pH变化范围为3.34~4.08,U和SO42-的最大浓度分别为438.95 mg/L、7.9 g/L.U和SO42-的释放前期迅速,后期较缓慢.尾矿表面吸附的铀酰络合物的溶解是导致U快速释放的主要原因. |
| 英文摘要: |
| Static and dynamic leaching experiment were conducted for the heap leaching tailings from Some Uranium Mine,Guangdong,to study the leaching characteristics of the main contaminants from uranium tailings contacted with rain.The results show that quantities of H+,uranium(U) and sulfate ion (SO42-)were released in the process of tailings-water interaction.In the case of static leaching experiment,the pH of leachate ranges from 3.3 to 3.71,the maximum concentration of U and SO42- are 124 mg/L and 5.28 g/L respectively.In dynamic leaching test,the pH of leachate ranges from 3.34 to 4.08,the maximum concentration of U and SO42- are 438.95 mg/L and 7.9 g/L respectively.The release of U and SO42- were fast in the initial stage and then became slow.It indicates that the fast release of U is mainly due to the dissolution of uranyl complex absorbed on the tailings surface. |
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