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http://dx.doi.org/10.14579/MEMBRANE_JOURNAL.2016.26.3.229

Preparation of Heterogeneous Ion Exchange Membranes and Evaluation of Desalination Performance in Capacitive Deionization  

Choi, Jae-Hwan (Dept. of Chemical Engineering, Kongju National University)
Lee, Joo-Bong (Dept. of Chemical Engineering, Kongju National University)
Publication Information
Membrane Journal / v.26, no.3, 2016 , pp. 229-237 More about this Journal
Abstract
We prepared heterogeneous ion exchange membranes (hetero-IEMs) for the application of membrane capacitive deionization (MCDI). Hetero-IEMs were fabricated by compressing the mixture of ion exchange resin powders and liner low density polyethylene (LLDPE). Characterization and MCDI desalination experiments were carried for the fabricated membranes. Electrical resistance of membrane decreased and water content increased with increasing the resin content in the hetero-IEMs. However, transport number indicating permselectivity of membrane was similar with that of commercial homogenesous ion exchange membrane. The results of MCDI desalination experiments showed that the adsorption amount for hetero-IEM was about 90% of that of homogeneous membrane due to the high electrical resistance of hetero-IEM. Although desalination performance of hetero-IEM decreased compared with homogeneous membrane, it was thought to be applicable to MCDI because of simple preparation and low price.
Keywords
heterogenous ion exchange membrane; membrane capacitive deionization; electrical resistance; transport number; carbon electrode;
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Times Cited By KSCI : 1  (Citation Analysis)
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