Details

Autor(en) / Beteiligte

• Kuzmin, V. I.
• Leskiv, M. N.
• Gudkova, N. V.
• Kuzmin, D. V.

Titel

Extraction and separation of Cd(II) and Ni(II) with salts of Cyanex 301 and amines

Ist Teil von

• Chemical papers, 2021-03, Vol.75 (3), p.1115-1121

Ort / Verlag

Cham: Springer International Publishing

Erscheinungsjahr

2021

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The extraction of cadmium from sulfuric acid solutions and its separation from nickel with salts of bis(2,4,4-trimethylpentyl)dithiophosphinic acid (Cyanex 301) and amines was studied. The data obtained show that extractants based on Cyanex 301 and Quaternary ammonium bases are most suitable for this since it is possible to extract cadmium in the form of sulfates and bisulfates as well as stripping metal from the organic phase. For deep extraction of cadmium from sulfate solutions in this system, 1–2 stages of extraction are sufficient. At this stage, the separation coefficient of cadmium and nickel β Cd/Ni reaches values > 10 6 , and the distribution coefficient of cadmium reaches almost 10 4 . Cadmium stripping is achieved by treating the organic phase with an ammonia solution containing ammonia more than 4 mol/L. The process can be used in the processing of cadmium–nickel batteries.