Aline Fernandes, Julio Carlos Afonso
In this work a hydrometallurgical route to recover nickel, cobalt and cadmium after leaching spent NieCd batteries with hydrochloric acid was investigated. Co(II) and Cd(II) were both recovered by solvent extraction. Cd(II) was first extracted (99.7 wt.%) with pure tri-n-butylphosphate (TBP), in the original leachate acidity (5.1 mol L/C0 1), in two stages at 25/C14 C with an aqueous/organic (A/O) phase ratio ¼ 1 v/v. The Co(II) present in the raffinate (free acidity 4.1 mol L/C0 1) was extracted with Alamine 336 or Alamine 304 (10 vol.% in kerosene) at 25/C14 C with an A/O ratio ¼ 1 in two stages. 97.5 wt.% of Co(II) was extracted using Alamine 336 while only 90.4 wt.% was extracted in the case of Alamine 304. Ni(II) was isolated from the raffinate as oxalate after addition of ammonium oxalate at pH 2.
@article{403de6aa-e700-41e5-a6df-380bbf39942d,
title={Hydrometallurgical route to recover nick},
author={Aline Fernandes and Julio Carlos Afonso},
year={2026},
language={en}
}TY - JOUR TI - Hydrometallurgical route to recover nick AU - Aline Fernandes AU - Julio Carlos Afonso PY - 2026 LA - en ER -
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