- Evaluation of Electrolyte and Electrode Spacing for Application of Electrokinetic Remediation
- Park, Geun-Yong;Kim, Woo-Seung;Kim, Do-Hyung;Yang, Jung-Seok;Baek, Kitae;
- 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;KIST-Gangneung Institute;Department of Environmental Engineering, Chonbuk National University;
- 전기동력학적 정화기술 적용을 위한 최적의 전해질 선택 및 전극간의 거리 평가
- 박근용;김우승;김도형;양중석;백기태;
- 금오공과대학교 환경공학과;금오공과대학교 환경공학과;금오공과대학교 환경공학과;KIST 강릉분원;전북대학교 환경공학과;
Abstract
The influence of processing fluids and electrode spacing on the electrokinetic process was evaluated to remediate As-, Cu-, Pb-contaminated soil. Single and mixture of sodium citrate, EDTA and NaOH was used to investigate the metal extraction. EDTA for washing reagent showed the highest removal efficiency. Based on the extraction result, the electrode spacing (20, 40, 60 cm) on the electrokinetic process was investigated to remove the multi-metals from soil. The highest removal was observed at the experiment with 60 cm of electrode spacing, however, the correlation between electrode spacing and removal of metals was not clear. The electrode spacing influenced the amount of accumulated electro-osmotic flow. BCR sequential extraction showed that electrokinetic process removed the fractionation of metals bound to Fe-Mn oxyhydroxide.
Keywords: electrokinetic;electrode spacing;chelating agents;fractionation;
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