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Article: Simulation of an energy self-sufficient electrodialysis desalination stack for salt removal efficiency and fresh water recovery

TitleSimulation of an energy self-sufficient electrodialysis desalination stack for salt removal efficiency and fresh water recovery
Authors
KeywordsReverse electrodialysis (RED)
Electrodialysis (ED)
Hybrid process
Energy self-sufficient desalination
Rejection-recovery tradeoff
Issue Date2020
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/memsci
Citation
Journal of Membrane Science, 2020, v. 598, p. article no. 117771 How to Cite?
AbstractElectrodialysis is a commonly used desalination method. In this study, we investigate its hybridization with its reverse process, where reverse electrodialysis (RED) harvests the salinity gradient power to provide the driving force for electrodialysis. In particular, the desalination performance (rejection and recovery) and their tradeoff relationship are simulated for the first time for an energy self-sufficient RED-ED desalination stack (REDD). The simulation results show that these two parameters can be simultaneously optimized by tailoring ion exchange membranes in the stack, i.e., using more selective membranes in the ED sub-cell (EDcell) and less selective membranes in the RED sub-cell (REDcell). Our analysis shows that a considerable driving force (e.g., a salinity ratio of high salinity stream to low salinity stream over 30 and a volumetric ratio over 0.5) is required to fully unleash the desalination performance of REDD, leading to a favorable shift of the rejection-recovery tradeoff line. In addition, multi-pass treatment is demonstrated to further enhance rejection at the expense of lower recovery. Similarly, a multi-stage configuration can be applied for higher recovery. This study reveals the operational constraints of a novel desalination REDD technique and provides insights into performance enhancement.
Persistent Identifierhttp://hdl.handle.net/10722/285075
ISSN
2019 Impact Factor: 7.183
2015 SCImago Journal Rankings: 2.042
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorMei, Y-
dc.contributor.authorLi, X-
dc.contributor.authorYao, Z-
dc.contributor.authorQing, W-
dc.contributor.authorFane, AG-
dc.contributor.authorTang, CY-
dc.date.accessioned2020-08-07T09:06:23Z-
dc.date.available2020-08-07T09:06:23Z-
dc.date.issued2020-
dc.identifier.citationJournal of Membrane Science, 2020, v. 598, p. article no. 117771-
dc.identifier.issn0376-7388-
dc.identifier.urihttp://hdl.handle.net/10722/285075-
dc.description.abstractElectrodialysis is a commonly used desalination method. In this study, we investigate its hybridization with its reverse process, where reverse electrodialysis (RED) harvests the salinity gradient power to provide the driving force for electrodialysis. In particular, the desalination performance (rejection and recovery) and their tradeoff relationship are simulated for the first time for an energy self-sufficient RED-ED desalination stack (REDD). The simulation results show that these two parameters can be simultaneously optimized by tailoring ion exchange membranes in the stack, i.e., using more selective membranes in the ED sub-cell (EDcell) and less selective membranes in the RED sub-cell (REDcell). Our analysis shows that a considerable driving force (e.g., a salinity ratio of high salinity stream to low salinity stream over 30 and a volumetric ratio over 0.5) is required to fully unleash the desalination performance of REDD, leading to a favorable shift of the rejection-recovery tradeoff line. In addition, multi-pass treatment is demonstrated to further enhance rejection at the expense of lower recovery. Similarly, a multi-stage configuration can be applied for higher recovery. This study reveals the operational constraints of a novel desalination REDD technique and provides insights into performance enhancement.-
dc.languageeng-
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/memsci-
dc.relation.ispartofJournal of Membrane Science-
dc.subjectReverse electrodialysis (RED)-
dc.subjectElectrodialysis (ED)-
dc.subjectHybrid process-
dc.subjectEnergy self-sufficient desalination-
dc.subjectRejection-recovery tradeoff-
dc.titleSimulation of an energy self-sufficient electrodialysis desalination stack for salt removal efficiency and fresh water recovery-
dc.typeArticle-
dc.identifier.emailTang, CY: tangc@hku.hk-
dc.identifier.authorityTang, CY=rp01765-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.memsci.2019.117771-
dc.identifier.scopuseid_2-s2.0-85077092002-
dc.identifier.hkuros312244-
dc.identifier.volume598-
dc.identifier.spagearticle no. 117771-
dc.identifier.epagearticle no. 117771-
dc.identifier.isiWOS:000512995400053-
dc.publisher.placeNetherlands-
dc.identifier.issnl0376-7388-

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