• copper extraction from aqueous solution by organic solvents of tbp and d2ehpa in buffer solution

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    • تاریخ ارائه: 1392/07/24
    • تاریخ انتشار در تی پی بین: 1392/07/24
    • تعداد بازدید: 889
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     tbp and d2ehpa were used to extract copper from aqueous phase in the buffer solution. the solvent extraction was performed in order to obtain optimized conditions at different ph and solvent concentrations for copper extraction from low grade copper oxide ores. in this regard, the following parameters were studied: the effect of organic solvents synergism, the ratio of tbp:mibk, the buffer solution ph, the concentration of buffer solution agent (sodium acetate), the influence of hcl and the ratio of aqueous to organic phase (a:o). the synergistic extraction of copper(ii) with mixture of tbp and d2ehpa was investigated and the results were compared with that of the extraction by individual solvent alone. the results showed that under conditions of: synergism of tri-n-butyl phosphate (tbp), methyl iso-butyl ketone (mibk) and d-2-ethyl hexyl phosphoric acid (d2ehpa), tbp:mibk= 7:3, ph=5, concentration of sodium acetate= 1 mol.l–1 and a:o= 1:1; more than 99% of copper could be extracted.

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