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Analytical sciences : the international journal of the Japan Society for Analytical Chemistry
May 10, 2020;36 (5): 627-630.

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

Toko Iwamura, Yasuhiro Akemoto, Shunitz Tanaka
Author Information
  1. Toko Iwamura: Graduate School of Environmental Science, Hokkaido University, Kita 10 Nishi 5, Kita, Sapporo, Hokkaido, 060-0810, Japan.
  2. Yasuhiro Akemoto: Graduate School of Environmental Science, Hokkaido University, Kita 10 Nishi 5, Kita, Sapporo, Hokkaido, 060-0810, Japan.
  3. Shunitz Tanaka: Graduate School of Environmental Science, Hokkaido University, Kita 10 Nishi 5, Kita, Sapporo, Hokkaido, 060-0810, 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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Created with Highcharts 10.0.0humicacidsoilenvironmentallyfriendlyelectrokineticprocessmodelcontaminatedPbelectroosmoticflowpotential72SoilinvestigatedusingAlthoughnegativechargemovedtowardcathodesideremovalefficiency480%1V/cmgradienthoperationimproved6%resultsindicatedhighapplicationremediationEnhancementEffectHumicAcidRemovalLeadElectrokineticProcesstreatmentleadpyrophyllite

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