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| Study of the matrix effects of simulated soil components (kaoline and montmorillonite) on the electrokinetic remediation for Cu(Ⅱ) contaminated soils [ 模拟土壤组分高岭土和蒙脱石中 Cu(Ⅱ)污染的电动修复研究 ] Xiaocheng Lu , Xingfa Huang, Jiongjia Cheng SciencePaper Online 2007; 2(8):577-581 ICID: 878699 | ||
| Article type: Editorial | ||
| IC™ Value: 2.40 | ||
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| Electro-kinetic remediation (EK) shows distinct advantages for heavy metals contaminated soils． In order to study the influence of different soil matrixes on the electrolytic process and the potential grade effects in the process of electrokinetic remediation for contaminated soils, two types of simulated soil components, montmorillonite and kaoline, are studied experimentally with our home-made instrumentation. The changes of soil potential, direct current, and pH etc are investigated systematically．It is found that montmorillonite and kaoline show different behaviors of dissolution and precipitation, which greatly alter the potential grade crossing the whole soil areas. This will influence the electro-osmosis as well as electro-migration, and finally affect the efficiencies of electrokinetic remediation for contaminated soils．The electrokinetic remediation results for Cu(Ⅱ) contaminated montmorillonite and kaoline indicate that EK technique is effective for kaoline, but not suitable for montmorillonite． | ||
: 电动修复技术对污染土壤的修复具有独特的优点。本文采用自制的电动修复装置，研究了模拟土壤组分高岭土和蒙脱石在外加电场条件下发生的变化。实验结果表明，高岭土和蒙脱石在外加电压条件下会发生溶解-沉积反应，模拟土壤溶液的组分和浓度发生改变，这将导致模拟土壤修复区电场梯度（电势）产生非均匀分布的变化，影响电迁移和电渗流，从而对土壤电动修复产生负面影响。进一步对Cu(Ⅱ)污染的高岭土和蒙脱石电动修复研究表明，电动技术对处理高岭土非常有效，而对蒙脱石效率较低。 | ||
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ICID 878699 | ||
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