科研之友
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摘要
Electrokinetic remediation of soil is an efficient in situ remediation technology. In this article, the effects of e? lectric fields such as voltage application, electric field intensity, additives and other factors on heavy metal accumulation in plants are reviewed. Most researches showed that choosing appropriate electric field configurations and intensities can improve the availability of heavy metals in soil, thereby promoting their uptake by plants and to some certain increasing plant biomass. In general, the selection of AC or low intensity DC electric fields can improve the bioavailability of heavy metals and also help to avoid the negative effects of electric fields on plants. Future research should focus on examining the mechanism of combined remediation by hyperaccumulators and electric fields, develop key methods of plant remedia? tion such as high efficiency and low cost environmentally?friendly strengthening reagents, and create coupled electroki? netic remediation and phytoremediation technology for one or more heavy metal contaminated soils.
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