A HNO3-Responsive Aqueous Biphasic System for Metal Separation: Application towards Ce-IV Recovery

• Tipo: Artigo em Revista Científica Internacional
• Data: 2021

Autores

Schaeffer, N (Autor) Outra; Vargas, SJR (Autor) Outra; Passos, H (Autor) Outra; Brandao, P (Autor) Outra; Nogueira, HIS (Autor) Outra; Svecova, L (Autor) Outra; Papaiconomou (Autor) Outra; Coutinho, JAP (Autor) Outra

Revista

Título: ChemSusChem

Vol. 14

Páginas: 3018-3026

ISSN: 1864-5631

Editora: Wiley-Blackwell

Indexação

ISI Web of Knowledge - 0 Citações

Scopus - 0 Citações

Outras Informações

ID Authenticus: P-00V-3E4

DOI: 10.1002/cssc.202101149

Abstract (EN): An acidic aqueous biphasic system (AcABS) presenting a desired and reversible phase transition with HNO3 concentration and temperature was developed herein as an integrated platform for metal separation. The simple, economical, and fully incinerable (C,H,O,N) AcABS composed of tetrabutylammonium nitrate ([N-4444][NO3])+HNO3+H2O was characterized and presented an excellent selectivity towards Ce-IV against other rare earth elements and transition metals from both synthetic solutions and nickel metal hydride (NiMH) battery leachates. The acid-driven self-assembly of AcABS bridges the gap between traditional ABS and liquid-liquid extraction whilst retaining their advantageous qualities, including compatibility with highly acidic solutions, water as the primary system component, the avoidance of organic diluents, rapid mass transfer, and the potential integration of the leaching and separation steps.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 10