Proceedings of the Korean Society of Soil and Groundwater Environment Conference (한국지하수토양환경학회:학술대회논문집)

Korean Society of Soil and Groundwater Environment (한국지하수토양환경학회)
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Semi-pilot Study of Electrokinetic Process for Phenanthrene Removal from Kaolinite

  • Lee, You-Jin (Department of Chemical und Biomolecular Engineering, KAIST) ;
  • Park, Ji-Yeon (Department of Chemical und Biomolecular Engineering, KAIST) ;
  • Kim, Sang-Joon (Department of Chemical und Biomolecular Engineering, KAIST) ;
  • Lee, Young-Cheol (Department of Chemical und Biomolecular Engineering, KAIST) ;
  • Yang, Ji-Won (Department of Chemical und Biomolecular Engineering, KAIST)
  • Published : 2004.09.01
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Abstract

The electrokinetically enhanced soil flushing had a great potential to improve the removal efficiency of polycyclic aromatic hydrocarbons (PAHs) from low permeable soils. A semi-pilot study of surfactant-enhanced electrokinetic process was investigated for the removal of phenanthrene from kaolinite. A nonionic surfactant, Tergitol 15-S-12 at 10 g/L was introduced as a flushing agent and 0.001M of sodium chloride was used as an electrolyte. When the constant voltage of 100 V was applied to the system for 25 days, only 0.66 kWh of electric power was consumed and the amount of electroosmotic flow was 6.9 L. The removal efficiency of phenanthrene was about 40 % and it can be improved by increasing the ion concentration of the flushing solution or the applied voltage.

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