Evaluation of Electrolyte and Electrode Spacing for Application of Electrokinetic Remediation

Title
Evaluation of Electrolyte and Electrode Spacing for Application of Electrokinetic Remediation
Authors
박근용김우승김도형양중석백기태
Keywords
electrokinetic; electrode spacing; chelating agents; fractionation
Issue Date
2013-03
Publisher
한국지하수토양환경학회지
Citation
VOL 18, NO 1, 6-15
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.
URI
http://pubs.kist.re.kr/handle/201004/44604
ISSN
15986438
Appears in Collections:
KIST Publication > Article
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