Extraction Reprocessing of Ni–MH Batteries Using Polypropylene Glycol 425 Systems

The prospects of combined reprocessing of cathode and anode materials of Ni–MH accumulators/batteries has been shown. Components of Ni–MH accumulators/batteries have been dissolved in hydrochloric acid followed by extraction separation of Ni(II), Co(II), Mn(II), La(III), Al(III), and Zn(II) ions in...

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Bibliographic Details
Published in:Russian journal of inorganic chemistry 2022-07, Vol.67 (7), p.1088-1093
Main Authors: Fedorova, M. I., Levina, A. V., Zakhodyaeva, Yu. A., Voshkin, A. A.
Format: Article
Language:English
Subjects:
Accumulators
Aluminum
Anodes
Binary systems
Chemistry
Chemistry and Materials Science
Electrode materials
Functional materials
Hydrochloric acid
Inorganic Chemistry
Leaching
Manganese
Metal ions
Nickel
Phosphoric acid
Physical Chemistry of Solutions
Polypropylene glycol
Reprocessing
Zinc
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Summary:The prospects of combined reprocessing of cathode and anode materials of Ni–MH accumulators/batteries has been shown. Components of Ni–MH accumulators/batteries have been dissolved in hydrochloric acid followed by extraction separation of Ni(II), Co(II), Mn(II), La(III), Al(III), and Zn(II) ions in two-phase systems based on polypropylene glycol 425 with addition of di(2-ethylhexyl)phosphoric acid from hydrochloric leaching solutions. The systems under consideration have been found to provide high-efficient (from 60 to 90%) recovery of Zn(II), Al(III), and La(III) ions. The obtained quantitative characteristics for extraction of the studied metal ions allow development of new technological scheme for reprocessing of functional materials of Ni–MH batteries to produce concentrates of separate metal ions.
ISSN:0036-0236
1531-8613
DOI:10.1134/S0036023622070099