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转换电极的电动力强化植物修复高浓度砷污染土壤

周丽玮 王航 刘阳生

周丽玮, 王航, 刘阳生. 转换电极的电动力强化植物修复高浓度砷污染土壤[J]. 环境工程, 2020, 38(10): 228-233. doi: 10.13205/j.hjgc.202010036
引用本文: 周丽玮, 王航, 刘阳生. 转换电极的电动力强化植物修复高浓度砷污染土壤[J]. 环境工程, 2020, 38(10): 228-233. doi: 10.13205/j.hjgc.202010036
ZHOU Li-wei, WANG Hang, LIU Yang-sheng. EFFECT OF ELECTRODE-ORIENTATED ELECTROKINETIC ENHANCEMENT ON PHYTOREMEDIATION ON ARSENIC CONTAMINATED SOIL[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(10): 228-233. doi: 10.13205/j.hjgc.202010036
Citation: ZHOU Li-wei, WANG Hang, LIU Yang-sheng. EFFECT OF ELECTRODE-ORIENTATED ELECTROKINETIC ENHANCEMENT ON PHYTOREMEDIATION ON ARSENIC CONTAMINATED SOIL[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(10): 228-233. doi: 10.13205/j.hjgc.202010036

转换电极的电动力强化植物修复高浓度砷污染土壤

doi: 10.13205/j.hjgc.202010036
基金项目: 

深圳市科创委重点基础项目"重金属污染土壤的生物-电动力耦合修复技术"(基20160140)。

详细信息
    作者简介:

    周丽玮(1994-),女,硕士研究生,主要研究方向为土壤重金属污染修复。1601214964@pku.edu.cn

    通讯作者:

    刘阳生(1968-),男,博士,主要研究方向为固废处置与资源化。yshliu@pku.edu.cn

EFFECT OF ELECTRODE-ORIENTATED ELECTROKINETIC ENHANCEMENT ON PHYTOREMEDIATION ON ARSENIC CONTAMINATED SOIL

  • 摘要: 电极转换下,以Capsicum annuum L.为对象探讨电动力强化的植物修复高浓度砷污染土壤效果。结果表明:对照组土壤pH降低,实验组升高。对照组土壤中砷浓度从(524.1±5.6) mg/kg降低为(500.5±8.3) mg/kg,实验组不同区域土壤砷浓度分别为(179.8±10.6),(674.9±5.43),(512.8±7.3) mg/kg。相较于对照组,实验组植物对砷的吸收量分别增加了-18.1%、282.8%和170.3%。对照组、实验组区域1、2、3的土壤和根际土壤砷浓度之比分别为2.62、0.64、1.48和1.26,电场增高了植物根系附近的砷浓度。对照组、实验组区域1、2、3土壤第5天的残渣态砷占比为55.64%、34.99%、39.06%和0%;对照组、实验组第5天阴极和第10天阴极附近土壤,结晶水铁铝氧化物结合态和残渣态砷占比为67.45%、0%和8.88%;体现了电场对土壤重金属形态的活化作用。实验组修复10 d的电耗成本为79.5元/m3,具备一定经济优势。
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  • 收稿日期:  2019-05-22

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