Electrokinetic-Assisted Phytoremediation of Pb-Contaminated Soil: Influences of Periodic Polarity Reversal Direct Current Field

The effect of electric stimulation on the phytoremediation Pb-contaminated soil by tall fescue and wheat seedlings was investigated monitoring time-dependent changes in properties Pb accumulation plants with or without a direct current (DC) exchange field. results showed that could strengthen electrical conductivity (EC) environment. periodic electrode helped maintain stable pH. Electric enhanced efficiency, enhancement increased plant growth. Compared treatments DC field, content plots under field 107–250.6% 32.7–84.4%, respectively, after 30 d planting. significantly enrichment coefficient seedlings. upward transport from seedling roots to shoots greatly promoted for 18 d. However, both restrained stimulation. Additionally, can improve heavy-metal-contaminated soil. More attention should be paid selection testing promising hyperaccumulators electrokinetic-assisted