Rare earths recovery from NiMH spent batteries

L. Pietrelli, B. Bellomo, D. Fontana, M.R Montereali

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Abstract

Nickel-metal hydride batteries (NiMH) contain rare earths (RE) and a variety of valuable metals such as nickel and cobalt. Using a hydrometallurgical process developed for the recovery of metals from spent batteries, a selective separation of RE by precipitation of Sodium RE double sulfate can be performed. Leaching solution was obtained by using 2 M H2SO4at 20 °C. The paper reports the experimental studies involving the precipitation process and the characterisation by X-ray diffraction of the resulting product (Sodium RE double sulfates). It has been shown that it is possible to recover about 80% of the RE contained in spent NiMH batteries. © 2002 Elsevier Science B.V. All rights reserved.
Original languageEnglish
Pages (from-to)135 - 139
Number of pages5
JournalHydrometallurgy
Volume66
Issue number1-3
DOIs
Publication statusPublished - Oct 2002
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Geochemistry and Petrology
  • Geotechnical Engineering and Engineering Geology

Cite this

Pietrelli, L., Bellomo, B., Fontana, D., & Montereali, M. R. (2002). Rare earths recovery from NiMH spent batteries. Hydrometallurgy, 66(1-3), 135 - 139. https://doi.org/10.1016/S0304-386X(02)00107-X