Neodymium recovery from NdFeB magnet wastes using Primene 81R·Cyanex 572 IL by solvent extraction.
J Environ Manage
; 222: 359-367, 2018 Sep 15.
Article
en En
| MEDLINE
| ID: mdl-29870964
ABSTRACT
The necessity of Rare Earth Elements (REEs) recycling is crucial to minimizing their supply risk and provide an alternative to greener technologies. Hence, the REEs recovery from NdFeB magnet wastes using cationic extractants by solvent extraction technique has been investigated in this research. Due to the difficulty in maintaining the aqueous pH in the industrial counter-current devices when extractants like Cyanex 272 or Cyanex 572 are used, the Primene 81R·Cyanex 572 ionic liquid has been synthesised to overcome this. 99.99% Nd(III) recovery with a purity of 99.7% from an aqueous mixture of Nd/Tb/Dy in chloride medium, the three representative REEs present in the NdFeB magnets wastes, has been achieved after two stages counter-current extraction process using 0.30â¯M of Primene 81R·Cyanex 572 ionic liquid (14 AO ratio) diluted in Solvesso 100, without any aqueous pH conditioning.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Reciclaje
/
Metales de Tierras Raras
/
Neodimio
Idioma:
En
Revista:
J Environ Manage
Año:
2018
Tipo del documento:
Article