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. 2020 May 10;36(5):627-630.
doi: 10.2116/analsci.19SBN04. Epub 2020 Mar 20.

Enhancement Effect of Humic Acid on Removal of Lead from Soil by Electrokinetic Process

Toko Iwamura  1 , Yasuhiro Akemoto  1   2 , Shunitz Tanaka  3   4   5
Affiliations
Free article

Enhancement Effect of Humic Acid on Removal of Lead from Soil by Electrokinetic Process

Toko Iwamura et al. Anal Sci. .
Free article

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.

Keywords: Soil treatment; electrokinetic process; electroosmotic flow; humic acid; lead; pyrophyllite.

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References

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