Recovery of Rare Earth Elements (REEs) Using Ionic Solvents

Guilhem Arrachart (1) , Julien Couturier (2) , Sandrine Dourdain (1) , Clément Levard (2) , S Pellet-Rostaing (1)

1 LTSM - Tri ionique par les Systèmes Moléculaires auto-assemblés
2 CEREGE - Centre européen de recherche et d'enseignement des géosciences de l'environnement

Rare earth elements (REEs) are becoming more and more significant as they play crucial roles in many advanced technologies. Therefore, the development of optimized processes for their recovery, whether from primary resources or from secondary sources, has become necessary, including recovery from mine tailings, recycling of end-of-life products and urban and industrial waste. Ionic solvents, including ionic liquids (ILs) and deep-eutectic solvents (DESs), have attracted much attention since they represent an alternative to conventional processes for metal recovery. These systems are used as reactive agents in leaching and extraction processes. The most significant studies reported in the last decade regarding the recovery of REEs are presented in this review.

Mots clés: rare earth elements; ionic liquid; deep-eutectic solvent; leaching; extraction; separation

Domaines: Chimie

Guilhem Arrachart, Julien Couturier, Sandrine Dourdain, Clément Levard, S Pellet-Rostaing. Recovery of Rare Earth Elements (REEs) Using Ionic Solvents. Processes, 2021, 9 (7), pp.1202. ⟨10.3390/pr9071202⟩. ⟨hal-03395395⟩