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有色金属(冶炼部分):2019,(2):65-70
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某铀尾矿中U、Th在电场作用下释放及迁移规律
李稳,陈功新,孙占学,刘顺亮,王文凤
(东华理工大学 水资源与环境工程学院,东华理工大学 水资源与环境工程学院,东华理工大学 水资源与环境工程学院,东华理工大学水资源与环境工程学院,东华理工大学 水资源与环境工程学院)
Release and Migration of U and Th in Uranium Tailings under Electric Field
LI Wen,CHEN Gongxin,SUN Zhanxue,liushunliang and WANG Wenfeng
(School of Water Resources and Environmental Engineering,East China University of Technology,,,,)
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投稿时间:2018-11-19     修订日期:2018-11-23     录用日期:2018-11-23     网络发布日期:2019-01-24
中文摘要: 以电流场作为核素迁移的载体,研究某铀尾矿中U、Th在0、0.5、1.0、1.5 V/cm直流电场条件下的释放及迁移规律。结果表明,在添加电场时,铀元素的浸出量小于自然淋滤条件下的浸出量,但土壤对铀的释放能力明显提升,且电场强度越强,释放能力越强,而钍元素则受其影响不大。在0、0.5、1.0、1.5 V/cm电场强度条件下铀元素的累积浸出量分别为1.439、1.285、1.474、1.795 mg/L,说明电场强度对U的释放以及迁移有促进作用。铀元素在电场作用下的迁移规律和其他重金属元素的规律类似,都是阳极往阴极迁移,且电场强度越大,阳极附近富集的铀元素浓度越高。
Abstract:With current field as carrier of nuclide migration, release and migration of U and Th in uranium tailings under different DC electric fields of 0, 0.5, 1.0 and 1.5 V/cm were investigated. The results show that leaching amount of uranium in electric field is lower than that of natural leaching conditions, but uranium release ability from soil under electric field is significantly improved, and the stronger the electric field intensity, the stronger the release ability is, while Th element is not affected. Cumulative leaching amount of uranium element is 1.439, 1.285, 1.474, and 1.795 mg/L respectively under electric field of 0, 0.5, 1.0 and 1.5 V/cm, which indicates that electric field promotes release and migration of U. Uranium element moves from anode toward cathode under electric field, which is similar to that of other heavy metal elements. The higher the electric field intensity, the higher the concentration of uranium enriched near the anode is.
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基金项目:国家自然科学基金资助项目(41662015,41772266);国家自然科学基金(广东联合基金)项目(U1501231);江西省科技项目(20133BFB29004);江西省博士后项目(2015KY48)
引用文本:
李稳,陈功新,孙占学,刘顺亮,王文凤.某铀尾矿中U、Th在电场作用下释放及迁移规律[J].有色金属(冶炼部分),2019(2):65-70.
LI Wen,CHEN Gongxin,SUN Zhanxue,liushunliang,WANG Wenfeng.Release and Migration of U and Th in Uranium Tailings under Electric Field[J].Nonferrous Metals (Extractive Metallurgy),2019(2):65-70.

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