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Role of Diluent in Nickel(II) Ion Extraction by Di(2-ethylhexyl) Phosphoric Acid

Article scientifique 2026 Anglais

Résumé

This work investigates the ability of di(2-ethylhexyl) phosphoric acid (HL) to extract Ni(II) ions from a sulfate solution and the effects of diluents on the extraction process. Striking contrasts are observed between solvents, with 1-octanol and toluene achieving extraction efficiencies of >98.65% and <6.12%, respectively. pH, extractant concentration, and diluent type strongly influence extraction performance. NiL2 complexes are formed in 1-octanol and methyl isobutyl ketone, whereas NiL2·2HL complexes are formed in toluene, dichloromethane, chloroform, carbon-tetrachloride, and cyclohexane. The calculated extraction constants contribute to the development of more effective extraction strategies supporting a stable and sustainable nickel supply for advanced technology sectors.

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Ghebghoub, F., Kaltoum, A., Malfi, N., Barkat, D., Charef, A. (2026). Role of Diluent in Nickel(II) Ion Extraction by Di(2-ethylhexyl) Phosphoric Acid. https://doi.org/10.31083/djnb54963

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Auteur(s)

Fatima Ghebghoub Adaika Kaltoum Najran Malfi Djamel Barkat Azzeddine Charef

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