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| Release and Migration of U and Th in Uranium Tailings under Electric Field |
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Received:November 19, 2018
Revised:November 23, 2018
Accepted:November 23, 2018
Published Online:January 24, 2019
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| DOI：doi：10.3969/j.issn.1007-7545.2019.02.015 |
| KeyWord:nuclides migration; uranium tailings; electric repair; radionuclide |
| Author | Institution |
| LI Wen |
东华理工大学 水资源与环境工程学院 |
| CHEN Gongxin |
东华理工大学 水资源与环境工程学院 |
| SUN Zhanxue |
东华理工大学 水资源与环境工程学院 |
| liushunliang |
东华理工大学水资源与环境工程学院 |
| WANG Wenfeng |
东华理工大学 水资源与环境工程学院 |
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| 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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