Development of a two-dimensional coupled-implicit numerical tool for analysis of the CDI operation

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Capacitive deionization, CDI, is an economical desalination technology which has drawn much attention and progress recently. A tool to extend a pore model into an electrode model was developed for CDI simulation based on a single pore simulation model. By comparing two Biesheuvel's experimental data with the tool result, diffusion coefficients inside electrode pores during a salt removal phase and electrode recovery phase were found to be order of 0.001 and 0.1 of bulk values, respectively. The predictions from the present tool agreed well with the experimental outlet concentration and current profiles. A sensitivity study was performed to identify the effects of retention time, pore depth, and capacitance on product water. The results confirmed that a large retention time, large pore depth and higher capacitance provide better performance. (C) 2012 Elsevier B.V. All rights reserved.
Publisher
ELSEVIER SCIENCE BV
Issue Date
2012-03
Language
English
Article Type
Article
Keywords

ACTIVATED CARBON ELECTRODES; CAPACITIVE DEIONIZATION; CHARGE EFFICIENCY; BRACKISH-WATER; DESALINATION; ELECTROLYTES; DEIONISATION; MODEL

Citation

DESALINATION, v.288, pp.66 - 71

ISSN
0011-9164
DOI
10.1016/j.desal.2011.12.011
URI
http://hdl.handle.net/10203/98776
Appears in Collection
NE-Journal Papers(저널논문)
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