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| Electric Remediation of Radioactive Thorium Contamination Soil around Mining Area with Auxiliary Reagents |
| Received:August 18, 2020 Revised:August 24, 2020 |
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| DOI：doi：10.3969/j.issn.1007-7545.2021.03.007 |
| KeyWord:citric acid; saponin; thorium contaminated soil; electric remediation |
| Author | Institution |
| CHEN Minjie |
内蒙古科技大学生命科学与技术学院 |
| IU Xuefeng |
内蒙古科技大学能源与环境学院 |
| LI Bowen |
内蒙古科技大学能源与环境学院 |
| Li Yafei |
内蒙古科技大学能源与环境学院 |
| ZHAO Dingran |
内蒙古科技大学能源与环境学院;内蒙古科技大学生命科学与技术学院 |
| ZHENG Chunli |
内蒙古科技大学能源与环境学院;内蒙古科技大学生命科学与技术学院 |
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| Abstract: |
| In order to explore the optimal electrolyte repair parameters of electric remediation of soil surrounding mining area and optimize experiment scheme, comparative test with 0.2 mol/L citric acid and 0.2 mol/L citric acid mixed solution with different concentration saponin as cathode and anode electrolyte respectively was conducted to electric repair thorium contaminated soil through design of 7 groups of electric power fixing device and compared with deionized water as control. Reinforcement electric repair process with auxiliary reagent was discussed and analyzed the feasibility with citric acid and saponin as electric repair additives. The results show that effect of thorium restoration in soil around mining area rises significantly with increase of saponin concentration when voltage gradient is 1 V/cm and continuous electrified for 7 days. The best repair effect occurs with removal rate of thorium of 59.94% when 0.2 mol/L citric acid and 0.1 mol/L saponin are used as electrolyte. |
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