Electrokinetic Extraction of Heavy Metal from Clayey Soil : Desorption Characteristics During Electrical Treatment

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2007 Vol.12, Issue 3 Preview Page Next Page

Electrokinetic Extraction of Heavy Metal from Clayey Soil : Desorption Characteristics During Electrical Treatment 중금속으로 오염된 점성토에서 동전기프로세스에 의한 탈착 특성: 이명호;장연수;
Lee, Myung-Ho;Jang, Yeon-Soo;

30 June 2007. pp. 23 ~ 28

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Abstract

A number of batch isotherm and electrokinetic experiments were conducted in order to investigate the migration of zinc and its removal efficiency during electrokinetic soil processing. Sorption and desorption characteristics of zinc spiked kaolin clay have been examined by comparison with electrically induced desorption and precipitation occurring in the anode and cathode regions, respectively. The removal efficiency of zinc under the applied voltage gradient of 300 V/m was found to be up to approximately 80 % within 4 hours of the electrokinetic treatment. The study is significant with respect to the remediation of contaminated areas.

Keywords

clayey soil;electrokinetic remediation;pH;precipitation;sorption/desorption;

동전기적 처리에 의한 무기 오염 물질의 이동 및 제거율을 조사하기 위해 일련의 흡착/탈착 실험 및 동전기 정화 실험을 실시하였다. 동전기적 효과로 인해 발생된 양극 부근에서의 탈착 현상 및 음극 부근에서의 침전 현상을 중금속으로 오염된 점토 시료의 흡착 및 탈착 특성과 비교하여 분석하였다. 제거 효율은 300 V/m의 전압구배로 약 4시간의 동전기적 처리 결과 80% 정도의 높은 제거 효율을 확인할 수 있었다.

키워드

점성토;동전기 정화;침전;흡착/탈착;

References

Atkins, P.W., 1978, Physical Chemistry, Oxford University Press, Oxford
Hicks, R.E. and Tondorf, S., 1994, Electrorestoration of metal contaminated soils, Environmental Science and Technology, 28(12), 2203-221010.1021/es00061a032
Mitchell, J.K., 1993, Fundamentals of Soil Behavior, 2nd edition, John Wiley & Sons
Page, M.M. and Page, C.L., 2002, Electroremediation of contaminated soils, Journal of Environmental Engineering, ASCE, 128(3), 208-21910.1061/(ASCE)0733-9372(2002)128:3(208)
Puppala, S.K., Alshawabkeh, A.L., Acar, Y.B., Gale, R.J., and Bricka, M., 1997, Enhanced electrokinetic remediation of high sorption capacity soil, Journal of Hazardous Materials, 55, 203-22010.1016/S0304-3894(97)00011-3
Sah, J.G. and Chen, J.Y., 1998, Study of the electrokinetic process on Cd and Pb spiked soils, Journal of Hazardous Materials, 58, 301-315
Sposito, G.., 1984, The surface chemistry of soils, Oxford University Press, Inc., New York
Weng, C.H., Takiyama, L.R., and Huang, C.P., 1994, Electroosmosis for the in-situ treatment of chromium-contaminated soil, Hazardous Industrial Wastes, 26, 496-505
Yeung, A.T., 1994, Electrokinetic flow processes in porous media and their applications, Advances in porous media, Elsevier, 2, p. 309-395

Information

Publisher :The Korean Society of Soil and Groundwater Environment
Publisher(Ko) :한국지하수토양환경학회
Journal Title :Journal of Soil and Groundwater Environment
Journal Title(Ko) :지하수토양환경
Volume : 12
No :3
Pages :23 ~ 28

[1] Atkins, P.W., 1978, Physical Chemistry, Oxford University Press, Oxford

[2] Hicks, R.E. and Tondorf, S., 1994, Electrorestoration of metal contaminated soils, Environmental Science and Technology, 28(12), 2203-221010.1021/es00061a032

[3] Mitchell, J.K., 1993, Fundamentals of Soil Behavior, 2nd edition, John Wiley & Sons

[4] Page, M.M. and Page, C.L., 2002, Electroremediation of contaminated soils, Journal of Environmental Engineering, ASCE, 128(3), 208-21910.1061/(ASCE)0733-9372(2002)128:3(208)

[5] Puppala, S.K., Alshawabkeh, A.L., Acar, Y.B., Gale, R.J., and Bricka, M., 1997, Enhanced electrokinetic remediation of high sorption capacity soil, Journal of Hazardous Materials, 55, 203-22010.1016/S0304-3894(97)00011-3

[6] Sah, J.G. and Chen, J.Y., 1998, Study of the electrokinetic process on Cd and Pb spiked soils, Journal of Hazardous Materials, 58, 301-315

[7] Sposito, G.., 1984, The surface chemistry of soils, Oxford University Press, Inc., New York

[8] Weng, C.H., Takiyama, L.R., and Huang, C.P., 1994, Electroosmosis for the in-situ treatment of chromium-contaminated soil, Hazardous Industrial Wastes, 26, 496-505

[9] Yeung, A.T., 1994, Electrokinetic flow processes in porous media and their applications, Advances in porous media, Elsevier, 2, p. 309-395

Journal of Soil and Groundwater Environment ISSN:1598-6438(Print) 2287-8831(Online) 지하수토양환경

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