• Evaluation of Processing Fluids on Electrokinetic remediation of Cu, Pb, As-contaminated soil
  • Park, Geun-Yong;Kim, Do-Hyung;Baek, Ki-Tae;
  • Department of Environmental Engineering, Kumoh National Institute of Technology;Department of Environmental Engineering, Kumoh National Institute of Technology;Department of Environmental Engineering, Kumoh National Institute of Technology;
  • Cu, Pb, As 복합 중금속오염 토양의 전기동력학적 정화에서 전해질의 영향 평가
  • 박근용;김도형;백기태;
  • 금오공과대학교 환경공학과;금오공과대학교 환경공학과;금오공과대학교 환경공학과;
Abstract
Electrokinetic technology was applied to remediate Cu, Pb and As-contaminated paddy soil. Removal of metal is highly dependent on the processing fluid during electrokinetic treatment. Tap water, NaOH, $HNO_3$, $Na_2EDTA$, and citric acid were evaluated as the processing fluids to enhance metal removal. Cu and Pb were transported toward cathode, however, it did not removed from soil section, while 56.6% of As was removed at a acidic condition. The strong acidic condition with nitric acid as a processing fluid enhanced the desoprtion of As from soil surface. However, longer operation time is needed to get the higher removal of Cu and Pb, and the acidification of soil after electrokinetic treatment should be solved.

Keywords: Electrokinetic remediation;Multi-metal contaminated soil;Processing fluids;pH control;

References
  • 1. 경상북도, 2008, 2007 환경백서, 제5장 토양환경 및 지하수 보전, p. 547-548.
  •  
  • 2. 박성우, 조정민, 류병곤, 김경조, 백기태, 양중석, 2008, Zn와 Ni 로 오염된 토양의 산을 이용한 전처리 및 산순환 동전기 정화의 타당성 연구, 지하수토양환경, 13(6), 17-22.
  •  
  • 3. 박성우, 이재영, 권태순, 김경조, 정근욱, 백기태, 2009, 세척제를 이용한 아연오염 철도토양의 정화 타당성 연구, 지하수토양환경, 14(1), 78-82.
  •  
  • 4. 백기태, 김도형, 서창일, 양중석, 이재영, 2007, 염산을 사용한 납 오염 토양의 토양세척에 의한 정화, 지하수토양환경, 12(3), 17-22.
  •  
  • 5. 신현무, 윤삼석, 2006, 동전기법에 의한 폐 중금속광산 퇴적토 내의 비소제거 특성, 한국환경과학회지, 15, 279-286.
  •  
  • 6. 조정민, 류병곤, 박성우, 김경조, 백기태, 2009, 동전기 정화기술을 이용한 Zn, Ni, F 복합오염 토양의 정화, 지하수토양환경, 14(1), 36-43.
  •  
  • 7. 환경부, 2008, 토양오염공정시험기준.
  •  
  • 8. Acar, Y.B., Gale, R.J., Alshawabkeh, A.N., Marks, R.E., Puppala, S., Bricka, M., and Parker, R., 1995, Electrokinetic remediation : Basics and technology status, J. Hazard. Mater., 40, 117-137.
  •  
  • 9. Alshawabkeh, A.N. and Acar, Y.B., 1996, Electrokinetic remediation. : Theore- tical model, J. ASCE, J. Geotech. Eng., 122, 186-196.
  •  
  • 10. Al-Hamdan, A.Z. and Reddy, K.R., 2008, Transient behavior of heavy metals in soil during electrokinetic remediation, Chemosphere, 71, 860-871.
  •  
  • 11. Azcue, J. M., Mudroch, A., Rosa, F., and G. E. M. Hall, 1994, Effects of abandoned gold mine tailings on the arsenic concentration in water and sediments of Jack of Clubs Lake, BC. Environ. Technol., 15, 669-678.
  •  
  • 12. Baek, K., Kim, D.H., Park, S.W., Ryu, B.G., Batjargal, T., and Yang, J.S., 2009, Electrolyte-conditioning-enhanced electrokinetic remediation of arsenic-contaminated mine tailing, J. Hazard. Mater. 161, 457-462
  •  
  • 13. Cho, J.M., Kim, K.J., Chung, K.Y., Hyun, S. , Baek K., 2009, Restoration of saline soil in cultivated land using electrokinetic process, Sep. Sci. Technol. 44, 2371-2384.
  •  
  • 14. Dean, J. A., Lange's Handbook of Chemistry, 1985, 14th. Edition, McGraw Hill, New York, 1856pp.
  •  
  • 15. Kim, D.H., Ryu, B.G., Park, S.W., Seo, C.I., Baek, K., 2009a, Electrokinetic remediation of Zn and Ni-contaminated soil, J. Hazard. Mater, 165, 501-505.
  •  
  • 16. Kim, D.H., Jeon, C.S., Ko, S.H., Yang, J. S., 2009b, Electrokinetic remediation of fluorine-contaminated soil: Conditioning of anolyte, J. Hazard. Mater, 161, 565-569.
  •  
  • 17. Kim, K.J., Cho, J.M., Baek K., Yang, J. S., Ko, S.H., 2010, Electrokinetic removal of chloride and sodium from tidelands, J Appl Electrochem, 40, 1139-1144.
  •  
  • 18. Li, Z., Yu, J.W., and Neretnieks, I., 1996, A new approach to electrokinetic remediation of soil polluted by heavy metals, J. Contam. Hydrol., 22, 241-253.
  •  
  • 19. Ryu, B.G., Yang, J. S., Kim, D.H., Baek K., 2010, Pulsed electrokinetic removal of Cd and Zn from fine-grained soil, J Appl Electrochem, 40, 1039-1047.
  •  
  • 20. Wang, J.Y., Zhang, D.S., Stabnikova, O., and Tay, J.H., 2005, Evaluation of electrokinetic removal of heavy metals from sewage sludge, J. Hazard. Mater., B124, 139-146.
  •  

This Article

  • 2010; 15(5): 1-7

    Published on Oct 31, 2010

  • Received on May 31, 2010
  • Accepted on Aug 26, 2010