Journal
JOURNAL OF RARE EARTHS
Volume 33, Issue 4, Pages 432-438Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S1002-0721(14)60437-3
Keywords
diglycolamide; extraction; REE and base metals ions; chloride medium; rare earths
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The feasibility of using N,N,N',N'-tetra(2-ethylhexyl)diglycolamide (TEHDGA) in 75 vol.% n-dodecane-25 vol.% n-octanol as agents for the extraction and separation of Nd(III), Sm(III), Dy(III), Fe(III), Ni(II), and Cs(I) from concentrated chloride solution was investigated. Different extraction behaviors were obtained towards rare earth elements (REE) studied and Fe(III), Ni(II) and Cs(I). Efficient separation of Nd(III), Sm(III) and Dy(III) from Fe(III), Ni(II), and Cs(I) was achieved by TEHDGA, depending on the HCl, HNO3 or H2SO4 concentration. A systematic investigation was carried out on the detailed extraction properties of Nd(III), Sm(III), and Dy(III) with TEHDGA from chloride media. The IR spectra of the extracted species were investigated.
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