Issue 3, 2016

Rare earth recovery from end-of-life motors employing green chemistry design principles

Abstract

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.

Graphical abstract: Rare earth recovery from end-of-life motors employing green chemistry design principles

Supplementary files

Article information

Article type
Paper
Submitted
08 Jun 2015
Accepted
07 Sep 2015
First published
07 Sep 2015

Green Chem., 2016,18, 753-759

Author version available

Rare earth recovery from end-of-life motors employing green chemistry design principles

H. M. D. Bandara, K. D. Field and M. H. Emmert, Green Chem., 2016, 18, 753 DOI: 10.1039/C5GC01255D

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