A cleaner strategy for efficient recovery of SmO and CoFeCu alloy from SmCo swarf based on an anodic leaching process

This communication reports the development of an efficient recycling route for SmCo swarf based on an anodic leaching process, which utilized the anode-generated H + via the oxygen evolution reaction and a direct anodization process to promote the leaching of the SmCo swarf. Over 99% of Sm 2 O 3 and...

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Published in:Green chemistry : an international journal and green chemistry resource : GC 2024-03, Vol.26 (5), p.2552-2559
Main Authors: Xu, Xuan, Gao, Jun, Zhao, Kunyuan, Sun, Haifeng, Jing, Peng, Liu, Baocang, Zhang, Jun
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Summary:This communication reports the development of an efficient recycling route for SmCo swarf based on an anodic leaching process, which utilized the anode-generated H + via the oxygen evolution reaction and a direct anodization process to promote the leaching of the SmCo swarf. Over 99% of Sm 2 O 3 and CoFeCu alloy were recovered with significant reduction of acid consumption by more than 90%. This recycling process avoids wastewater discharge and could be scaled up with an acceptable energy consumption of 6.41 kW h kg −1 . Anodic leaching of SmCo swarf using anode-generated H + and anodization with simultaneous recovery of CoFeCu alloy.
ISSN:1463-9262
1463-9270
DOI:10.1039/d3gc04679f