Optimization of salt adsorption rate in membrane capacitive deionization
作者： R. Zhao , O. Satpradit , H.H.M. Rijnaarts , P.M. Biesheuvel , A. van der Wal
DOI: 10.1016/J.WATRES.2013.01.025
关键词: Membrane 、 Electrochemistry 、 Adsorption 、 Salt (chemistry) 、 Desalination 、 Analytical chemistry 、 Capacitive deionization 、 Chemistry 、 Carbon 、 Electrode
摘要: Membrane capacitive deionization (MCDI) is a water desalination technique based on applying cell voltage between two oppositely placed porous electrodes sandwiching spacer channel that transports the to be desalinated. In MCDI, ion-exchange membranes are positioned in front of each electrode prevent co-ions from leaving region during ion adsorption, thereby enhancing salt adsorption capacity. MCDI can operated at constant (CV), or electrical current (CC). this paper, we present both experimental and theoretical results for capacity rate (both CV- CC-mode) as function adsorption/desorption time, feed concentration, current, voltage. We demonstrate how by varying parameter individually, it possible systematically optimize settings given system achieve highest average recovery.
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