Economic and Environmental Geology (자원환경지질)

The Korean Society of Economic and Environmental Geology (대한자원환경지질학회)
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A study on the removal of heavy metals from soils using electrokinetic soil processing and ion exchange membrane

전기장과 이온교환막을 이용한 토양에서의 중금속 제거에 대한 연구

  • 김순오 (광주과학기술원 환경공학과)
  • Published : 1999.02.01
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Abstract

In order to remediate hazardous waste site, a process of electrokinetically purging chemicals from saturated soil is examined by laboratory experiments. Electrokinetic soil remediation is one of the most promising soil decontamination processes that habe igh removal efficiency and time-effectiveness in low-permeability soils such as clay. Being combined with several mechanisms-electromigration, elec troosmosis, diffusion and electrolysis of water, electrokinetic soil processing can remove non-polar organics as well as ionic contaminants. The objectives of this study are; 1) the exploration of the feasibility of electrokinetic soil processing on the removal of heavy metals, 2) the investigation of applicability to the tailing-soils in aban doned mining area, 3) the examination of effects of soil pH and conductivity on the transport phenomena of elements in soils, and 4) the investigation of the applicability of the ionexchange membrance to the efficient collection of heavy metals removed from contaminated soils. With the result of this study, it is suggested that the removal efficiency is significantly influenced by applied voltage & current, type of purging solutions, soil pH, permeability and zeta potentials of soil. Although further study should be needed, it is possible to collect removed heavy metals with ion-exchange membrance in cathode compartment.

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References

  1. Environ. Sci. Technol. v.46 Principles of electrokinetic remidation Acar, Y.B.;Alshawabkeh, A.N.
  2. J. Hazardous Materials v.40 Electrokinetic remedation: Basics and technology status Acar, Y.B.;Gale, R.J.;Alshawabkeh, A.N.
  3. Heavy Metals in Soils.(2nd ed.) Alloway, B.J.
  4. J. Environ. Eng. v.118 Electroosmic remonal of gasoline hydrocarbons and TCE from clay Bruel, C.J;Segal, B.A.;Walsh, M.T.
  5. In situ treatment of hazardous waste-contaminated soils.(2nd ed.) Chambers, D.C.
  6. J. Korean Inst. Mining Geol. v.21 Stable isotope and fluid Inclusion studies of gold-silver-bearing hydrothermal-vein deposite, Cheonan-Cheongyang-Nonsan Mining District, Republic of Korea: Cheongyang Area So, Shil sup;Selton, K.L.;Chi, Se Jung;Shoi, Sang Hoon
  7. Applied Environmental Geochemistry Heavy metal contamination from base metal mining and smelting: implications for man and his environment Davies, B.E.;I. Thornton
  8. Mineral Deposita v.21 Moneralogy and geochemistry of the Au-Ag ore deposits of the South Korean Peninsula H. Kaneda; H. Shimazaki;M.S. Lee
  9. 2nd Int. Symp. on Environmental Geotechnology v.1 Electroosmosis in fine-grained soil Khan, L.I.;Pamukcu, S.;Kugelman, I.
  10. Theory to geotechnical practice Geotechnique v.41 Conduction phenomena Mitchell, J.K.
  11. Electrokinetic flow barriers in compacted clay Mitchell, J.K.;Yeung, T.C.
  12. Electrokinetically enhanced in situ soil decontamination. In remediation of hazardous waste contaminated soils Pamukcu, S.;Wittle, J.K.;D.L. Wise(ed.);D.J. Trantolo(ed.)
  13. Development of pH gradients in electrochemical processing of kaolinite Putnam, G.
  14. Geochemistry in Mineral Exploration(2nd ed.) Rose, A.W.;Hawkes, H.E.;Webb, J.S.
  15. J. Geochemistry. Eng. Div. v.106 Electroosmosis chemistry and water quality Segal, B.A.;O'Bannon, C.E.;Matthias, J.A.
  16. The effect of secondary reaction on the electrokinetic treatment of a silty-sand soil Thompson, R.T.
  17. Applied Environmental Geochemistry Geochemistry applied to agriculture Thornton, I.;I. Thornton(ed.)