Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/163731
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dc.contributor.authorYang, Dingchangen_US
dc.contributor.authorLiu, Hongen_US
dc.contributor.authorShe, Qianhongen_US
dc.date.accessioned2022-12-15T04:31:25Z-
dc.date.available2022-12-15T04:31:25Z-
dc.date.issued2023-
dc.identifier.citationYang, D., Liu, H. & She, Q. (2023). Mixed cation transport behaviours in electrodialysis during simultaneous ammonium enrichment and wastewater desalination. Desalination, 545, 116155-. https://dx.doi.org/10.1016/j.desal.2022.116155en_US
dc.identifier.issn0011-9164en_US
dc.identifier.urihttps://hdl.handle.net/10356/163731-
dc.description.abstractThis study explored using electrodialysis (ED) to simultaneously enrich ammonium from wastewater for post nutrient recovery and desalt wastewater to enhance post-treatment for water recovery. It focused on the investigation of various factors affecting the efficiencies of ammonium concentration and cation removal and the elucidation of the mechanisms of mixed cation transport behaviours in ED. It was found that using an ED stack with the typical membrane arrangement (i.e., the cation exchange membranes (CEMs) are adjacent to electrode chambers), increasing applied current density and dilute solution/concentration solution volume ratio can generally increase the efficiency of ammonium concentration and the selectivity of NH4+ over other cations (i.e., Na+, K+, Ca2+ and Mg2+) by CEMs. However, the extent of such increases was constrained by severe ammonium leakage from the feedwater into the electrode solution. A total net transport number quantifying ion transport across ion exchange membranes was introduced to analyze ammonium leakage, which revealed that the less competitive migration of NH4+ than Na+ leads to the substantial accumulation of NH4+ in the electrode solution. To reduce ammonium leakage and increase the ammonium concentration efficiency, altering the membrane arrangement with the anion exchange membranes (AEMs) adjacent to the electrode chambers was demonstrated to be an effective strategy. This study provides important implications for developing ED-based technologies for nutrient enrichment and wastewater desalination.en_US
dc.description.sponsorshipMinistry of Education (MOE)en_US
dc.language.isoenen_US
dc.relationRG84/19en_US
dc.relation.ispartofDesalinationen_US
dc.rights© 2022 Elsevier B.V. All rights reserved.en_US
dc.subjectEngineering::Environmental engineeringen_US
dc.titleMixed cation transport behaviours in electrodialysis during simultaneous ammonium enrichment and wastewater desalinationen_US
dc.typeJournal Articleen
dc.contributor.schoolSchool of Civil and Environmental Engineeringen_US
dc.contributor.researchNanyang Environment and Water Research Instituteen_US
dc.contributor.researchSingapore Membrane Technology Centreen_US
dc.identifier.doi10.1016/j.desal.2022.116155-
dc.identifier.scopus2-s2.0-85140272055-
dc.identifier.volume545en_US
dc.identifier.spage116155en_US
dc.subject.keywordsElectrodialysisen_US
dc.subject.keywordsResource Recoveryen_US
dc.description.acknowledgementThis research was supported by the Ministry of Education, Singapore, under the Academic Research Fund Tier 1 (RG84/19).en_US
item.fulltextNo Fulltext-
item.grantfulltextnone-
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