Integrating reverse electrodialysis with constant current operating capacitive deionization

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dc.creatorJande, Yusufu A.
dc.creatorKim, Woo-Seung
dc.date2020-04-02T08:27:19Z
dc.date2020-04-02T08:27:19Z
dc.date2014-12-15
dc.date.accessioned2022-10-25T09:24:37Z
dc.date.available2022-10-25T09:24:37Z
dc.descriptionThis research article published by Elsevier Ltd., 2014
dc.descriptionThe 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.formatapplication/pdf
dc.identifierhttps://doi.org/10.1016/j.jenvman.2014.07.039
dc.identifierhttps://dspace.nm-aist.ac.tz/handle/20.500.12479/710
dc.identifier.urihttp://hdl.handle.net/123456789/95619
dc.languageen
dc.publisherElsevier Ltd.
dc.subjectCapacitive deionization
dc.subjectReverse electrodialysis
dc.subjectPower density
dc.subjectUltrapure water
dc.titleIntegrating reverse electrodialysis with constant current operating capacitive deionization
dc.typeArticle

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