Study On Ac-Ek Remediation Of Typical Mercury Contaminated Soil From Guizhou Province

As one of the prior controlled pollutants, mercury and its components concern researchers both domestic and overseas with their serious neuronal toxicity, teratogenic effect, cumulative effect and genotoxicity. It is reported that about 32 thousand hectares of arable land in China have been polluted by mercury being generated by 1.9×108 kilograms per year. Guizhou province, being considered as one of the most important mercury mine in China, even in the world, contributes 70% of the total mercury output of China. As a result, mercury content in soil nearby some of the local mercury mines or land irrigated by waste water reaches as high as 24 to 347 mg.kg-1, even over 700 mg.kg-1, which makes an enormous impact on the ecosystem and human health. Remediation of mercury pollution is becoming a more and more urgent problem that calls for public attention.In the last decades, a new soil recovery technology named electrokinetic (EK) remediation is rapidly developed, which has several evident advantages involving high efficiency and none secondary pollution. However, some factors like pH value, soil property and heavy metal speciation can significantly affect the results of EK remediation. Boundary migration caused by asorption-...