Applicability Evaluation of Electrodes Exchange and Mixed Solution for Enhanced Electrokinetic Process

Electrokinetic Process의 효율 향상을 위한 전극교환 방식과 혼합용매 적용 가능성 평가

  • Lee, Noh-Sup (Department of Environmental Engineering, Konkuk University) ;
  • Park, Sung-Soo (Han-River Basin Environmental Office, Ministry of Environment) ;
  • NamKoong, Wan (Department of Environmental Engineering, Konkuk University)
  • 이노섭 (건국대학교 환경공학과) ;
  • 박성수 (환경부 한강유역환경청) ;
  • 남궁완 (건국대학교 환경공학과)
  • Received : 2007.07.18
  • Accepted : 2007.07.23
  • Published : 2007.08.10


This study investigated the feasibility of enhanced electrokinetic (EK) remediation of soil contaminated with approximately 20000 Pb-mg/kg. Enhanced EK remediation was evaluated by using mixed solution (0.3 M acetic acid and 0.03 M EDTA, EK-M) and by exchanging electrodes for preventing precipitation of metal hydrate. For the EK-M, the lead removal efficiency was only 2% lower than the case where 0.03 M EDTA was solely used (EK-Blank, EK-B). Considering the costly expense of EDTA, the application of EK-M would be economically viable. The efficiency of of EK-E was higher by 2% than the EK-B method. More impertantly, the pH values of entire soil packed column presented to be neutral (7~8) in the EK-E process. Unlike to EK-B and EK-M, the deposition of heavy metals to any specific area was avoided in the EK-E process.


Supported by : 건국대학교


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