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Remediation of kaolin simulated copper contaminated soil by electrodynamics
高岭土模拟铜污染土壤电动力学修复

Keywords: electrodynamics,copper,remediation,contaminated soil
电动力学
,,修复,污染土壤

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Abstract:

Remediation of the heavy metal contaminated soil was researched by electrokinetic technology. Kaolin was used as copper contaminated soil. Combined with the electrokinetic theory, the remediation effect of copper contaminated soil under different voltages and added complexing agent was tested. The results showed that the C/C0 of Cu2+ closest to the cathode was 1.596 when the voltage strength was 0.5 V/cm, but the C/C0 of Cu2+ was 2.245 when the voltage strength was 1 V/cm. It could be concluded that migration effect of copper was enhanced by increasing voltage strength. Besides, when there was not a certain amount of complexing agent in the copper contaminated soil, most of Cu2+ were in the fifth soil and the C/C0 of Cu2+ was 1.339. When a certain amount of complexing agent was added into the copper contaminated soil, most of the Cu2+ were in the soil closest to the cathode and C/C0 was 1.716. It could be seen that adding a certain amount of complexing agent could generate a kind of chelate with copper to enhance migration effect of copper.

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