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Extraction and Separation of Cd(II) and Ni(II) from Sulfate Solution Using Bifunctional Ionic Liquid [A336/Cy 272]

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Extraction and separation of 0.001 M CdSO4 and 0.001 M NiSO4 in presence of 0.1 M Na2SO4 was carried out using 0.1 M of Ionic liquid [A336/Cy272] in kerosene. The various parameters like effect of shaking time, pH, extractant concentration and salt concentration that would affect the separation of Cd(II) and Ni(II) was investigated. From shaking time variation study it was found that 5 minutes was enough to reach the extraction equilibrium for both metals with 0.1 M [A336/Cy272] in kerosene corresponding to the extraction of Cd(II) 95.3% and Ni(II) 47.4% respectively. The percentage extraction of Cd(II) and Ni(II) as well as the separation factor (β = D Cd/D Ni) increased with increase in initial pH of the aqueous phase. Highest separation factor of 45 was achieved at a pH of 8.64. The separation factor decreased with increase in sodium sulfate concentration in the aqueous phase. Temperature had a positive effect on the separation of cadmium and nickel.
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Keywords: EXTRACTION; IONIC LIQUID; SEPARATION FACTOR

Document Type: Research Article

Publication date: February 1, 2016

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  • ADVANCED SCIENCE LETTERS is an international peer-reviewed journal with a very wide-ranging coverage, consolidates research activities in all areas of (1) Physical Sciences, (2) Biological Sciences, (3) Mathematical Sciences, (4) Engineering, (5) Computer and Information Sciences, and (6) Geosciences to publish original short communications, full research papers and timely brief (mini) reviews with authors photo and biography encompassing the basic and applied research and current developments in educational aspects of these scientific areas.
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