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Prodius, Denis; Gandha, Kinjal; Mudring, Anja-Verena; Nlebedim, Ikenna C
ACS sustainable chemistry & engineering, 01/2020, Volume: 8, Issue: 3Journal Article
A straightforward and environment-friendly process for acid-free leaching of rare-earth elements and cobalt, which are critical materials, from waste magnet materials has been developed. The process also allows for selective leaching of rare-earth elements from magnet-containing electronic wastes, such as end-of-life hard disk drives and electric motors. The use of copper salts eliminates the use of volatile toxic acids in the dissolution and separation processes, which allows for a more eco-friendly approach to recovering critical elements and a safer work environment. Recovered critical materials were shown to be suitable for reinsertion into the materials supply chain.
