Investigation of water transport phenomena in electrodialysis for high-concentration brine production
This study explores water transport phenomena during brine concentration using an electrodialysis (ED) system. Desalination experiments were performed under constant current and constant voltage conditions to assess the effects of operational parameters on desalination performance and water transpor...
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| Main Author: | |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-04-01
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| Series: | Desalination and Water Treatment |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1944398625001122 |
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| Summary: | This study explores water transport phenomena during brine concentration using an electrodialysis (ED) system. Desalination experiments were performed under constant current and constant voltage conditions to assess the effects of operational parameters on desalination performance and water transport mechanisms. The results revealed that electro-osmotic water transport averaged 3.03 g of H2O per g of NaCl, consistent with the ion hydration number. Based on these findings, the maximum concentrate concentration achievable via ED was estimated to be approximately 24.8 wt% in this study. At lower current densities, osmotic water transport became more prominent, resulting in reduced concentrate concentrations and decreased current efficiency. Conversely, higher current densities significantly improved current efficiency and concentrate concentration, albeit with increased energy consumption. This study offers valuable insights into optimizing ED operational parameters to enhance process efficiency and facilitate the effective production of high-concentration brine. |
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| ISSN: | 1944-3986 |