Journal of Korean Society on Water Environment (한국물환경학회지)

Korean Society on Water Environment (한국물환경학회)
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Effect of Operating Parameters on the Removal Performance of Copper Ion by Electrodialysis

전기투석을 이용한 구리이온의 제거 시 운전인자의 영향

  • Jung, Hyo-Sang (Department of Environmental Engineering, Dong-eui University) ;
  • Lee, Gangchoon (Department of Chemical Engineering, Dong-eui University)
  • 정효상 (동의대학교 환경공학과) ;
  • 이강춘 (동의대학교 화학공학과)
  • Received : 2010.10.04
  • Accepted : 2010.11.04
  • Published : 2011.01.30
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Abstract

To evaluate the feasibility of electrodialysis for copper removal from industrial wastewater, the effect of operating parameters on the removal of copper was experimentally estimated. The limiting current density (LCD) linearly increased with the copper concentration and the flow rate. The time when the copper concentration of diluate reaches to 3 mg/L was linearly proportional to initial concentration of diluate, and the concentration of concentrate did not affect the removal rate. Increase in the flow rate gave a positive effect on the removal rate and became insignificant at flow rates greater than 2.4 L/min. The removal rate increased with the applied voltage. From the operation of the electrodialysis module used in this research, the flow rate of 2.4 L/min and the voltage corresponding to the 80~90% of LCD were found be the optimum operating condition for the copper removal from highly concentrated copper solutions.

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References

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