含水率对电动修复Cr（Ⅵ）污染高岭土的影响

实验选用重铬酸钾作为污染物，配制高岭土中Cr（Ⅵ）初始质量分数为500mg·kg^-1。实验研究了不同含水率对电动修复效率的影响程度。实验结果表明：含水率极低时，由于电迁移和电渗流作用都很小，去除效率很低，需要其它的方式提高去除效率；在达到饱和状态时，含水率对去除效率影响很小，几乎为零。在一般含水率情况下，含水率对去除效率影响很大，在以后的中试或现场试验中，建议通过改变含水率的大小来提高去除效率，还需进一步研究。

Effect of Moisture for the Electrokinetic Removal of Cr（Ⅵ ） from Kaolin

This paper presents the experimental study on the electrokinetic remediation of the chromium-polluted kaolin all laboratory scale. The initial concentration is 500mg·kg^-1 kaolin. The effect of moisture for the electrokinetic removal of Cr（Ⅵ） from kaolin soil is obvious. The results indicate little effect and efficiency of electroosmosis and electromigration when the moisture is at low level while the effect is obvious when the moisture of kaolin at ordinary level. Suggestions are given to improve the efficiency by changing the moisture at the pilot scale and local scale, further research remains to be done to prevent the acidification of soils.