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The Membrane Society of Korea (한국막학회)
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Confirmation of The Fouling Phenomena in CDI Process and The Establishment of Its Removal Process Conditions

CDI 전극 내 파울링 현상 확인 및 제거공정 조건의 확립

  • Kim, Tae Yeong (Department of Advanced Materials and Chemical Engineering, Hannam University) ;
  • Rhim, Ji Won (Department of Advanced Materials and Chemical Engineering, Hannam University)
  • 김태영 (한남대학교 화공신소재공학과) ;
  • 임지원 (한남대학교 화공신소재공학과)
  • Received : 2019.10.25
  • Accepted : 2019.10.29
  • Published : 2019.10.31
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Abstract

In this study, The experiments of the confirmation of the fouling phenomena in CDI process and the establishment of its removal process conditions were carried out. The foulant concentrations of humic acid sodium salt (HA) added to the feed solution were 5, 10, 15 mg/L, respectively. The occurrence of fouling under the certain adsorption/desorption conditions could be confirmed with an increase in adsorption and desorption concentration curve over time. Both the voltage and time in adsorption and desorption processes were changed to eliminate the fouled pollutants. Typically, the fouling removal condition was found at the adsorption condition 1.2 V/5 min and the desorption condition -3 V/2 min, respectively.

본 논문에서는 축전식 탈염 공정에서 파울링 현상의 확인과 파울링의 제거공정 조건을 확립하는 연구를 진행하였다. 공급액에 첨가된 파울링 유발 물질인 Humic acid sodium salt (HA)의 농도는 5, 10, 15 mg/L이었다. 주어진 일반의 흡/탈착 조건에서 파울링의 발생은 시간이 지남에 따라 흡착과 탈착 농도의 증가로 확인할 수 있었다. 파울링 현상을 제거하기 위해 흡착 및 탈착에서의 전압과 시간을 변경하였다. 이로부터 흡착 조건 1.2 V/5 min, 탈착 조건 -3 V/2 min에서 파울링 제거를 확인하였다.

Keywords

References

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