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Improvement of recovery performance in the solvent extraction of Cu(II) using [bmim][Tf2N] and a β-diketone as extractant and its stripping with supercritical carbon dioxide

Rossana Sepúlveda,Jonathan Castillo,Andrea Plaza,José Sánchez,Alejandra Torres,Julio Romero

The Journal of Supercritical Fluids（2017）

Cited 5|Views15
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Abstract
•Liquid-liquid extraction of Cu(II) ions from aqueous solutions.•Cu2+ ions were extracted using [bmim][TF2N] as diluent and a β-diketone (TFA) as extractant.•Significant improvement in the extraction performance.•The stripping of metal complex from the organic phase was achieved with a scCO2.•Stripping was efficiently implemented in semi-continuous mode.
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Key words
Metal extraction,Stripping,1-Butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide,Copper,β-Diketone,Supercritical carbon dioxide
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