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Updated: Dec 25, 2025

Electrostatic Method to Remove Particulate Organic Matter from Soil
Published on: February 10, 2021
Enhancement Effect of Humic Acid on Removal of Lead from Soil by Electrokinetic Process
Toko Iwamura1, Yasuhiro Akemoto1,2, Shunitz Tanaka3,4,5
1Graduate School of Environmental Science, Hokkaido University, Kita 10 Nishi 5, Kita, Sapporo, Hokkaido, 060-0810, Japan.
Abstract:
The environmentally friendly electrokinetic process was investigated using model contaminated soil with Pb and humic acid. Although humic acid has a negative charge, it moved toward the cathode side by electroosmotic flow. The removal efficiency of Pb from model contaminated soil was 48.0% under 1 V/cm of the potential gradient after 72 h of operation, while it improved to 72.6% with humic acid. These results indicated that humic acid has high potential for application in the environmentally friendly remediation of soil.
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