Journal
SOLVENT EXTRACTION AND ION EXCHANGE
Volume 32, Issue 3, Pages 267-280Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/07366299.2013.850334
Keywords
nickel(II) speciation; pyridylketoxime; chloride/sulphate solution; nickel(II) extraction
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Funding
- [32-374/13 DS-PB]
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In this study, the extraction of nickel(II) ions from sulphate and sulphate/chloride solutions with 2-, 3-, and 4-pyridylketoximes was investigated. The effect of different variables influencing the extraction of nickel(II) ions such as the extractant structure and the concentration of hydrogen ion, sulphate, and chloride ions have been studied. The shaking time and temperature also influenced metal ion removal. It was found that the hydrophobic 2-pyridylketoximes are the most effective extractants for nickel ions from sulphate/chloride solutions. The discussion also includes the mechanism of nickel(II) complexation by the hydrophobic pyridylketoximes and the speciation of nickel(II) in the presence of chloride and sulphate ions.
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