Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China; Graduate School of Chinese Academy of Sciences, Beijing 100049, China.
Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China.
J Environ Sci (China). 2014 Nov 1;26(11):2290-7. doi: 10.1016/j.jes.2014.09.014. Epub 2014 Sep 23.
The effectiveness of electrokinetic remediation for pyrene-contaminated soil was investigated by an anode-cathode separated system using a salt bridge. The applied constant voltage was 24 V and the electrode gap was 24 cm. Two types of soil (sandy soil and loam soil) were selected because of their different conductive capabilities. The initial concentrations of pyrene in these soil samples were 261.3mg/kg sandy soil and 259.8 mg/kg loam soil. After treatment of the sandy soil and loam soil for seven days, 56.8% and 20.1% of the pyrene had been removed respectively. Under the same power supply voltage, the removal of the pollutant from the sandy soil was greater than that from the loam soil, due to the higher current and lower pH. Further analysis revealed that the effectiveness of electrokinetic remediation was affected by the energy expenditure, and was associated with changes in soil properties.
采用盐桥构建的阴阳极分离体系研究了电动修复技术对芘污染土壤的修复效果。所施加的恒定电压为 24V，电极间隙为 24cm。选择两种土壤（沙土和壤土）是因为它们具有不同的导电能力。这些土壤样品中芘的初始浓度分别为 261.3mg/kg 沙土和 259.8mg/kg 壤土。经过 7 天的处理后，沙土和壤土中分别有 56.8%和 20.1%的芘被去除。在相同的供电电压下，沙土中污染物的去除率大于壤土，这是因为电流更大，pH 值更低。进一步分析表明，电动修复的效果受能量消耗的影响，并与土壤性质的变化有关。
