Field application of electrokinetic remediation for multi-metal contaminated paddy soil using two-dimensional electrode configuration

Environmental Science and Pollution Research International
Woo-Seung KimKitae Baek

Abstract

In this study, we evaluated the feasibility of in situ electrokinetic remediation for arsenic (As)-, copper (Cu)-, and lead (Pb)-contaminated soil, in a pilot-scale field application with two-dimensional electrode configurations. Square and hexagonal configurations with different electrode spacing, 1 m and 2 m, were investigated under a constant 100 V. A square configuration with electrode spacing of 2 m removed 61.5 % of As, 11.4 % of Cu, and 0.9 % of Pb, respectively, and a hexagonal configuration with the same spacing showed a higher removal efficiency in top (59 % of As, 0-0.5 m) and middle (53 % of As, 0.5-1.0 m) layers, but much lower removal efficiency in the bottom layer (1-1.5 m), which was thought to be due to groundwater flow through periodic rise and fall of tides. Fractionation analysis showed that As bound to Fe-Mn oxyhydroxide was the main form of As removed by the electrokinetic process. The two-dimensional configuration wasted less electrical energy by Joule heating, and required fewer electrode installations, compared to the one-dimensional electrode configuration.

References

Jun 1, 2001·Environmental Pollution·B SunS P McGrath
Jun 10, 2005·Journal of Hazardous Materials·L Di Palma, P Ferrantelli
May 16, 2008·Journal of Hazardous Materials·Kitae BaekJung-Seok Yang
May 27, 2009·Journal of Hazardous Materials·Sung-Woo ParkKitae Baek
Jul 7, 2009·Journal of Hazardous Materials·Jung-Seok YangJaeyoung Choi
Dec 20, 2011·Journal of Hazardous Materials·Maja Pociecha, Domen Lestan

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Citations

May 27, 2014·Environmental Science and Pollution Research International·Jung-Seok YangKitae Baek
Dec 17, 2015·Environmental Science and Pollution Research International·Yeon-Jun ShinKitae Baek
Aug 12, 2014·Environmental Science and Pollution Research International·Eun-Ki JeonKitae Baek
Aug 10, 2020·Environmental Science and Pollution Research International·Hongting XuJiangli Yang
Sep 28, 2017·Environmental Science and Pollution Research International·Gustavo Benitez AlvarezPatricia Alves Pereira de Sousa
Feb 18, 2020·Environmental Science and Pollution Research International·Lilian Rodrigues Rosa SouzaMárcia Andreia Mesquita Silva da Veiga

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