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Dai et al 2020, Dual‐Zinc Electrode Electrochemical Desalination.pdf | 1,22 MB | Adobe PDF | View/Open |
Title: | Dual-Zinc Electrode Electrochemical Desalination |
Authors: | Dai, J.; Wang, J.; Hou, X.; Ru, Q.; He, Q.; Srimuk, P.; Presser, V.; Chen, F. |
Publishers version: | https://doi.org/10.1002/cssc.202000188 |
URI: | https://doi.org/10.34657/3721 https://oa.tib.eu/renate/handle/123456789/5092 |
Issue Date: | 2020 |
Published in: | ChemSusChem 13 (2020), Nr. 10 |
Publisher: | Weinheim : Wiley-VCH Verlag |
Abstract: | Continuous and low-energy desalination technologies are in high demand to enable sustainable water remediation. Our work introduces a continuous desalination process based on the redox reaction of a dual-zinc electrode. The system consists of two zinc foils as redox electrodes with flowing ZnCl2 electrolyte, concentrated and diluted salt streams with three anion- and cation-exchange membranes (AEM and CEM) separated configuration (AEM|CEM|AEM). If a constant current is applied, the negative zinc electrode is oxidized, and electrons are released to the external circuit, whereas the positive zinc electrode is reduced, causing salt removal in the dilution stream. The results showed that brackish water can be directly desalted to 380.6 ppm during a continuous batch-mode process. The energy consumption can be as low as 35.30 kJ mol−1 at a current density of 0.25 mA cm−2, which is comparable to reverse osmosis. In addition, the dual-zinc electrode electrochemical desalination demonstrates excellent rate performance, reversibility, and batch cyclability through electrode exchange regeneration. Our research provides a route for continuous low-energy desalination based on metal redox mediators. |
Keywords: | deionization; dual-zinc electrode; electrochemical desalination; redox mediators; water remediation; Chlorine compounds; Computational electromagnetics; Desalination; Electrolytes; Energy utilization; Redox reactions; Water conservation; Zinc; Zinc chloride; Cation exchange membranes; Deionization; Desalination technologies; External circuits; Redox mediators; Sustainable water; Water remediation; Zinc electrodes; Electrochemical electrodes |
Type: | article; Text |
Publishing status: | publishedVersion |
DDC: | 540 |
License: | CC BY 4.0 Unported |
Link to license: | https://creativecommons.org/licenses/by/4.0/ |
Appears in Collections: | Chemie |
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Dai, J., J. Wang, X. Hou, Q. Ru, Q. He, P. Srimuk, V. Presser and F. Chen, 2020. Dual-Zinc Electrode Electrochemical Desalination. 2020. Weinheim : Wiley-VCH Verlag
Dai, J., Wang, J., Hou, X., Ru, Q., He, Q., Srimuk, P., Presser, V. and Chen, F. (2020) “Dual-Zinc Electrode Electrochemical Desalination.” Weinheim : Wiley-VCH Verlag. doi: https://doi.org/10.1002/cssc.202000188.
Dai J, Wang J, Hou X, Ru Q, He Q, Srimuk P, Presser V, Chen F. Dual-Zinc Electrode Electrochemical Desalination. Vol. 13. Weinheim : Wiley-VCH Verlag; 2020.
Dai, J., Wang, J., Hou, X., Ru, Q., He, Q., Srimuk, P., Presser, V., & Chen, F. (2020). Dual-Zinc Electrode Electrochemical Desalination (Version publishedVersion, Vol. 13). Version publishedVersion, Vol. 13. Weinheim : Wiley-VCH Verlag. https://doi.org/https://doi.org/10.1002/cssc.202000188
Dai J, Wang J, Hou X, Ru Q, He Q, Srimuk P, Presser V, Chen F. Dual-Zinc Electrode Electrochemical Desalination. 2020;13(10). doi:https://doi.org/10.1002/cssc.202000188
This item is licensed under a Creative Commons License