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有色金属(冶炼部分):2021,(3):36-42
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辅助试剂强化电动修复矿区周边土壤中放射性钍污染的研究
(1.内蒙古科技大学生命科学与技术学院;2.内蒙古科技大学能源与环境学院)
Electric Remediation of Radioactive Thorium Contamination Soil around Mining Area with Auxiliary Reagents
CHEN Minjie1, IU Xuefeng, LI Bowen, Li Yafei, ZHAO Dingran, ZHENG Chunli2,3,4
(1.College of Life Science and Technology, Inner Mongolia University of Science and Technology;2.School of Energy and Environment,Inner Mongolia University of Science and Technology;3.China School of life science and technology,Inner Mongolia University of Science and Technology;4.China)
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投稿时间:2020-08-18    修订日期:2020-08-24
中文摘要: 为探究矿区周边土壤最佳的电动修复电解液修复参数,实现最优化的试验方案,采用一种新型辅助试剂(柠檬酸和皂素),通过设计7组电动力修复装置,对比研究了0.2 mol/L的柠檬酸和0.2 mol/L柠檬酸与不同浓度皂素的混合溶液作为阴极、阳极电解液,进行电动修复钍污染的土壤,并与去离子水对照,讨论了在辅助试剂下强化电动修复过程,分析了柠檬酸和皂素作为电动修复添加剂的可行性。在电压梯度为1 V/cm,持续通电7 d,随着皂素浓度的增加修复矿区周边土壤中钍的修复效果明显增加,当0.2 mol/L柠檬酸与0.1 mol/L的皂素作为电解液进行修复时效果最佳,钍去除率达到59.94%。
中文关键词: 柠檬酸  皂素  钍污染土壤  电动修复
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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基金项目:国家重点研发计划项目(2018YFC1802904);国家自然科学基金资助项目(41561094,41867061);内蒙古自然科学基金项目(2017MS0401);内蒙古科技成果转化专项项目(2019CG062);内蒙古科技计划项目
引用文本:
陈敏洁,刘雪峰,李博文,李亚飞,赵丁冉,郑春丽.辅助试剂强化电动修复矿区周边土壤中放射性钍污染的研究[J].有色金属(冶炼部分),2021(3):36-42.
CHEN Minjie,IU Xuefeng,LI Bowen,Li Yafei,ZHAO Dingran,ZHENG Chunli.Electric Remediation of Radioactive Thorium Contamination Soil around Mining Area with Auxiliary Reagents[J].Nonferrous Metals (Extractive Metallurgy),2021(3):36-42.

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