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

Toko Iwamura¹, Yasuhiro Akemoto^{1

2}, Shunitz Tanaka^{3

4

5}

Affiliations

¹ Graduate School of Environmental Science, Hokkaido University, Kita 10 Nishi 5, Kita, Sapporo, Hokkaido, 060-0810, Japan.
² Industrial Research Institute, Industrial Technology Research Department, Hokkaido Research Organization, Kita 19 Nishi 1111, Kita, Sapporo, Hokkaido, 060-0819, Japan.
³ Graduate School of Environmental Science, Hokkaido University, Kita 10 Nishi 5, Kita, Sapporo, Hokkaido, 060-0810, Japan. shunitz@ees.hokudai.ac.jp.
⁴ Faculty of Environmental Earth Science, Hokkaido University, Kita 10 Nishi 5, Kita, Sapporo, Hokkaido, 060-0810, Japan. shunitz@ees.hokudai.ac.jp.
⁵ Hokkaido Center of Environmental Science and Technology (General Incorporated Foundation), Kita 24 Nishi 14, Kita, Sapporo, Hokkaido, 001-0024, Japan. shunitz@ees.hokudai.ac.jp.

PMID: 32201404
DOI: 10.2116/analsci.19SBN04

Free article

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

Toko Iwamura et al. Anal Sci. 2020.

Free article

. 2020 May 10;36(5):627-630.

doi: 10.2116/analsci.19SBN04. Epub 2020 Mar 20.

Authors

Toko Iwamura¹, Yasuhiro Akemoto^{1

2}, Shunitz Tanaka^{3

4

5}

Affiliations

¹ Graduate School of Environmental Science, Hokkaido University, Kita 10 Nishi 5, Kita, Sapporo, Hokkaido, 060-0810, Japan.
² Industrial Research Institute, Industrial Technology Research Department, Hokkaido Research Organization, Kita 19 Nishi 1111, Kita, Sapporo, Hokkaido, 060-0819, Japan.
³ Graduate School of Environmental Science, Hokkaido University, Kita 10 Nishi 5, Kita, Sapporo, Hokkaido, 060-0810, Japan. shunitz@ees.hokudai.ac.jp.
⁴ Faculty of Environmental Earth Science, Hokkaido University, Kita 10 Nishi 5, Kita, Sapporo, Hokkaido, 060-0810, Japan. shunitz@ees.hokudai.ac.jp.
⁵ Hokkaido Center of Environmental Science and Technology (General Incorporated Foundation), Kita 24 Nishi 14, Kita, Sapporo, Hokkaido, 001-0024, Japan. shunitz@ees.hokudai.ac.jp.

PMID: 32201404
DOI: 10.2116/analsci.19SBN04

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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Separation approaches towards understanding supramolecular aggregate formation of humic acid.
Saito S. Saito S. Anal Sci. 2022 Feb;38(2):233-234. doi: 10.1007/s44211-021-00020-3. Anal Sci. 2022. PMID: 35314971 Review. No abstract available.

References

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

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

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