Department of Civil Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong.
J Hazard Mater. 2011 Nov 15;195:11-29. doi: 10.1016/j.jhazmat.2011.08.047. Epub 2011 Aug 22.
Electrochemical remediation is a promising remediation technology for soils contaminated with inorganic, organic, and mixed contaminants. A direct-current electric field is imposed on the contaminated soil to extract the contaminants by the combined mechanisms of electroosmosis, electromigration, and/or electrophoresis. The technology is particularly effective in fine-grained soils of low hydraulic conductivity and large specific surface area. However, the effectiveness of the technology may be diminished by sorption of contaminants on soil particle surfaces and various effects induced by the hydrogen ions and hydroxide ions generated at the electrodes. Various enhancement techniques have been developed to tackle these diminishing effects. A comprehensive review of these techniques is given in this paper with a view to providing useful information to researchers and practitioners in this field.
电化学修复是一种很有前途的修复技术，可用于修复受无机、有机和混合污染物污染的土壤。在受污染的土壤上施加直流电场，通过电渗析、电动迁移和/或电泳的联合作用提取污染物。该技术在低水力传导率和大比表面积的细颗粒土壤中特别有效。然而，由于污染物在土壤颗粒表面的吸附以及电极产生的氢离子和氢氧根离子引起的各种影响，该技术的有效性可能会降低。已经开发了各种增强技术来解决这些降低效果的问题。本文对这些技术进行了全面回顾，以期为该领域的研究人员和从业者提供有用的信息。
