화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.34, 180-185, February, 2016
DOI10.1016/j.jiec.2015.11.004  Export Citation
Occurrence of re-adsorption in desorption cycles of capacitive deionization
Qihan Yao1, and Hao L. Tang1, 2, †
  • 1Department of Water Engineering and Science, College of Civil Engineering, Hunan University, Changsha, Hunan 410082, China, Korea
  • 2Minn Water LLC, Minneapolis, MN 55441, USA
E-mail:
This research explored the occurrence of re-adsorption that may impose negative impact on electrode regeneration in capacitive deionization (CDI). Among the tested operational modes, polarity reversal was found to deliver faster salt desorption than a conventional short circuit and reduction of cell voltage to 0.3 V. Earlier occurrence of re-adsorption was observed when the CDI system was operated under a higher reversed discharge voltage. An optimized polarity reversal at 1.2 V followed by a short circuit is considered as a promising approach for efficient CDI operations for practical engineering use.
Keywords:Capacitive deionization;Re-adsorption;Desorption;Polarity reversal;Desalination
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