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A Redox-Shuttled Electrochemical Method for Energy-Efficient Separation of Salt from Water
We present a novel electrochemical method for separating salt from water in a practical, energy-efficient manner: SUPER (ShUttle-Promoted Electrolyte Removal). SUPER combines elements from redox flow batteries and conventional electrodialysis: a redox shuttle in a four-chambered cell architecture dr...
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Published in: | ACS sustainable chemistry & engineering 2019-08, Vol.7 (15), p.13411-13417 |
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Main Authors: | , , , |
Format: | Article |
Language: | English |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | We present a novel electrochemical method for separating salt from water in a practical, energy-efficient manner: SUPER (ShUttle-Promoted Electrolyte Removal). SUPER combines elements from redox flow batteries and conventional electrodialysis: a redox shuttle in a four-chambered cell architecture drives ion motion at very low voltages and energy consumption without splitting water, uses no electrocatalysts, and can be salt-agnostic. As exemplified by NaCl, we demonstrate salt removal at a gravimetric specific energy consumption (SEC) as low as 0.046 kWh/kg NaCl transported, which is equivalent to producing water at drinkable salinity ( |
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ISSN: | 2168-0485 2168-0485 |
DOI: | 10.1021/acssuschemeng.9b02720 |