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Integrating reverse electrodialysis with constant current operating capacitive deionization

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dc.creator Jande, Yusufu A.
dc.creator Kim, Woo-Seung
dc.date 2020-04-02T08:27:19Z
dc.date 2020-04-02T08:27:19Z
dc.date 2014-12-15
dc.date.accessioned 2022-10-25T09:24:37Z
dc.date.available 2022-10-25T09:24:37Z
dc.identifier https://doi.org/10.1016/j.jenvman.2014.07.039
dc.identifier https://dspace.nm-aist.ac.tz/handle/20.500.12479/710
dc.identifier.uri http://hdl.handle.net/123456789/95619
dc.description This research article published by Elsevier Ltd., 2014
dc.description The presence of a salinity gradient between saline water streams may result in the production of electricity via either reverse electrodialysis (RED) or forward osmosis. While the former system generates electricity because of the ionic current, the latter process produces electricity due to the osmotic pressure. In this study, RED is coupled with capacitive deionization (CDI) so that highly pure water, fresh water and electricity could be generated simultaneously. A CDI cell is operated at constant current, and it generated ultrapure water and two streams (a lower salinity stream of approximately 17.4 mol NaCl per m3 and a high salinity stream of approximately 512.8 mol NaCl per m3) to be fed to the RED stack from a 15,000 ppm CDI feed concentration. The performed simulation reveals that, the total power generated from the RED using infinitely divided electrodes is 0.57 W/m2 electrode area. The use of RED in a CDI plant introduces a new approach to minimize CDI brine concentration, which would otherwise have a negative impact on the environment if it were disposed directly without prior treatment.
dc.format application/pdf
dc.language en
dc.publisher Elsevier Ltd.
dc.subject Capacitive deionization
dc.subject Reverse electrodialysis
dc.subject Power density
dc.subject Ultrapure water
dc.title Integrating reverse electrodialysis with constant current operating capacitive deionization
dc.type Article


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