Journal
GREEN CHEMISTRY
Volume 18, Issue 3, Pages 753-759Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5gc01255d
Keywords
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Funding
- WPI
- NSF [IIP-0968839]
- Directorate For Engineering
- Div Of Industrial Innovation & Partnersh [1464560] Funding Source: National Science Foundation
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This manuscript describes the development of an efficient process for the recovery of rare earth elements from materials mixtures such as in motors with a recovery rate of >80%. While heat treatment is required for processing, all other steps can be performed at room temperature, thus resulting in a process designed for energy efficiency. Selective dissolution enables efficient separation of steel and copper by taking advantage of the different reduction potentials of the materials in the mixture, while selective precipitation of RE salts is the key for obtaining pure RE products. Overall, the established process applies green chemistry principles for designing a hydrometallurgical process.
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