Premium
Solvent extraction modeling of Ce/Eu/Y from chloride media using D2EHPA
Author(s) -
Pavón Sandra,
Fortuny Agustí,
Coll M. Teresa,
Sastre Ana M.
Publication year - 2019
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.16627
Subject(s) - phosphoric acid , cationic polymerization , extraction (chemistry) , chloride , solvent extraction , solvent , chemistry , fluorescence , inorganic chemistry , nuclear chemistry , chromatography , organic chemistry , physics , quantum mechanics
End‐of‐life fluorescent lamps are becoming essential in the rare earths (REEs) field and suppose a feasible secondary source for getting them, reducing thus their supply risk. Considering the proved viability of the cationic extractants, the present study aims at establishing a solvent extraction model using di‐(2‐ethylhexyl)phosphoric acid (D2EHPA) not only based on the individual Ce, Eu, and Y behavior in chloride media, but also bearing in mind the competitive extraction of these metals in Ce/Eu/Y mixtures, depending on the media variables. Furthermore, the model allow determining the optimal REEs separation conditions. The results disclose that Y could be separated from the mixture using 0.1 mol/L D2EHPA, acidity above of 3 mol/L of protons and chloride concentrations higher than 4 mol/L.