Geotechnical Engineering (한국지반공학회지:지반)

Korean Geotechnical Society (한국지반공학회)
권호 표지

Removal of Heavy Metal Contaminants from Cohesive Soil by Electrokinetics

Electrokinetic 기술에 의한 점성토의 중금속 오염물 제거

  • 정하익 (정회원, 한국건설기술연구원 지반연구실) ;
  • 강병희 (정회원, 인하대학교 공과대학 토목공학과)
  • Published : 1997.12.01
Download PDF
⟨ Previous Next ⟩

Abstract

Electroosmotic tests were performed on saturated marine clay specimens contaminated with lead to investigate the efficiency of the electrokinetic technique for removal of heavy metals from the cohesive soils. For this purpose, testing program included variable conditions such as the concentration of lead (500, 5, 000, 50, 000mg/kg), the level of electrical current (10, 50, 100 mA), operating duration (5, 15, 30days), and the application of three dirtferent chemicals for enhancement in efficiency. The pH of inflow and outflow, electroosmotic flow and electrical conductivity during the test, and the pH and the concentration of lead across the specimen after the test are presented. Test results came to the conclusion that the electrokinetic technique was very effective to remove heavy metals such as lead from the contaminated cohesive soil. Adding ecetic acid at the cathod to dissolve the procipitates of lead hydroxide as found to be effective for the enhancement of the efficiency in remediation.

중금속으로 오염된 점성토의 정화에 대한 electrokinetic기술의 효율을 연구하기 위하여 포화 해성점토를 납으로 오염시켜 전기삼투시험을 수행하였다. 이를 위하여 실험조건으로서 납의 오염농도 500, 5,000, 50,000mg/kg, 공급전류 10, 50, 100mA, 가동시간 5, 15, 30일 및 3가지의 효율 향상기법을 적용하였다. 유입수와 유출수의 pH, 전기삼투유량 및 전기전도도를 시험중에 측정하고 또 시험 완료후에 공시체전 길이에 걸쳐 pH및 잔존 납농도를 측정하여 제시하였다. 시험결과에 의해서 electrokinetic 기술이 효과적인 방법이라는 결론을 얻었다. 또한 음극에 침강된 수산화납을 용해시키기위해 초산을 가하게 되면 정화효율이 향상된다는 사실을 알 수 있었다.

Keywords

References

  1. J. Environ. Sci. Health. v.A25 no.6 Electrochemical processing of soils: Theory of pH gradient development by diffusion,migration, and linear convection Acar,Y.B;R.J.Gale;G.A.Putnam;J,Hamed;R.L.Wong
  2. Transportation Research Record v.1312 Electrokinetic soil porcessing in waste remediation and treatment : Synthesis of available data Acar,Y.B;J.Hamed
  3. Environmental Science and Technology v.27 no.13 Principles of electorkinetic remediation Acar,Y.B;A.N.Alshawabkeh
  4. Geotechnique v.44 no.2 Removal of cadium (Ⅱ) from saturated kaolinite by the application of electrical current Acar,Y.B;J.T.Hamed;A.N.Alshawabkeh;R.J.Gale
  5. Journal of Geotechnical Engineering v.122 no.3 Electrokinetic remediation .I : Pilot-scale tests with lead-spiked kaolinite Acar,Y.B;A.N.Alshawabkeh
  6. J. Environ. Sci. Health v.A27 no.7 Removal of contaminants from soils by electrokinetics: A theoretical treatise Alshawabkeh,A.N;Y.B.Acar
  7. Gulf Coast Hazardous Substance Research Center Theoretical and experimental modeling of multi species transport in soils under electric field Alshawabkeh,A.N;Y.B.Acar
  8. Technologies for environmental clean-up: soil and groundwater Avogadro,A;R.C.Ragaini
  9. Van Nostrand Reinhold Hazardous waste site remediation : The engineer's perspective Bellandi,R.
  10. Contaminated land problems and solutions Cairney,T.
  11. Ground water pollution control Canter,L.W;R.C.Knox
  12. In situtreatment of hazardous waste contaminated soils (Second edition) Chamber,C.D;J.Willis
  13. Geotechnical management of waste and contamination Fell,R.T;P.C.Gerrard
  14. ASCE v.117 no.GT2 Pb(Ⅱ) removal from kaolinite by electrokinetics Hamed,J;Y.B.Acar
  15. Clays and Clay Minerals v.17 Surface conductance and electrokinetic properties of kaolinite beds Lorenz,P.B.
  16. Workshop on electro-kinetic treatment and its application in environmental-geotechnical engineering for hazardous waste site remediation Potential use of electro-kinetics for hazardous waste site remediation Mitchell,J.K.
  17. Foundamentals of soil behavior (second edition) Mitchell,J.K.
  18. Workshop on electro-kinetic treatment and its application in environmental-geotechnical for hazardous waste site remediation Physics and chemistry of electro-kinetic porcesses Olsen,H.W.
  19. CE 516 Groundwater remediation Oregon State University
  20. Remediation of Hazardous Waste Contaminated Soils Electrokinetically enhanced in situ soil decontamination Pamukcu,S;J.K.Wittle
  21. Remedial action technology for waste disposal sites Rogoshewski,P.J.
  22. Groud water and soil contamination remediation: loward compatible science, policy, and public perception U.S.Department of Commerce
  23. EPA-625-6-85-006 v.1 Handbook: Remedial action at waste disposal sites, U.S. Environmental Protection Agency
  24. EPA-540-2-90-002 Handbook on in site treatment of hazardous waste contaminated soils U.S.Environmental Protection Agency
  25. EPA-540-990-002 v.1 Innovative treatment technologies: Overview and guide to information sources U.S.Environmental Protection Agency
  26. EPA-540-R-92-076 The superfund innovative technology evalvation program U.S.Environmental Protection Agency
  27. EPA-542-B-93-005 Remedial technologies screening matrix and reference guide U.S.Environmental Protection Agency
  28. Geotechnique v.42 no.1 Remedial actions at operating petrochemical sites Vreeken,C;J.V.Eyk;M.Loxham;W.Vissar
  29. Short course on natural hazards and environmental geotechniques The use of electrokinetic transport as part of site decontamination West,L.J.
  30. Geotechnical special publication no.46 Effect of zeta potential on soil electrokinesis West,L.J;D.I.Stewart
  31. Electro-kinetic flow porcesses in porous media and their applications Yeung,A.T
  32. Developments in Geotechnical Engineering 73 Principle of contaminant transport in soil Youg,R.N;A.M.O.Mohamed;B.P.Warkentin