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Effect of Ion Exchange Capacity on Salt Removal Rate in Membrane Capacitive Deionization Process

이온교환용량이 막 결합형 축전식 탈염공정에서 염 제거율에 미치는 영향

  • Yun, Won Seob (Department of Advanced Materials and Chemical Engineering, Hannam University) ;
  • Cheong, Seong Ihl (Department of Advanced Materials and Chemical Engineering, Hannam University) ;
  • Rhim, Ji Won (Department of Advanced Materials and Chemical Engineering, Hannam University)
  • 윤원섭 (한남대학교 화공신소재공학과) ;
  • 정성일 (한남대학교 화공신소재공학과) ;
  • 임지원 (한남대학교 화공신소재공학과)
  • Received : 2018.10.18
  • Accepted : 2018.10.25
  • Published : 2018.10.31

Abstract

In order to investigate the effect of ion exchange capacity of ion exchange membranes on the salt removal efficiency in the membrane capacitive deionization process, sulfosuccinic acid (SSA) as the cross linking agent was added to poly(vinyl alcohol)(PVA) and sulfonic acid-co-maleic acid (PSSA_MA) was put into PVA at different concentrations of 10, 50 and 90 wt% relative to PVA. As the content of PSSA_MA increased, the water content and ion exchange capacity increased and the salt removal efficiency was also increased in the membrane capacitive deionization process. The highest salt removal efficiency was 65.5% at 100 mg/L NaCl feed at a flow rate, 15 mL/min and adsorption, 1.4 V/5 min for PSSA_MA 90 wt%.

Acknowledgement

Supported by : 환경부

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