Abstract
Leaching of Li-ion battery components in sulfuric acid followed by precipitation with ethanol has been proposed as a route for material recycling [1]. Cobalt, copper and lithium were then recovered as sulphate salts. The final mixture of dilute salts, water and ethanol may be further processed using ion-exchange membranes and electrodialysis to separate salts and water from ethanol, with the aim of increasing salt recovery and allowing for the re-use of the spent ethanol. We investigate the effect of alcohol on the transport numbers, resistance and the thermodynamic properties of the membrane and the aqueous solutions of alcohol, water and salt. This has implications for the electrodialysis of alcohol-containing mixtures, as well as for the application of this working fluid to a power-producing reverse electrodialysis system.[1] S. Aktas, D. J. Fray, O. Burheim, J. Fenstad & E. Açma, Recovery of metallic values from spent Li ion secondary batteries.
Published Version
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