J. Marchese et al., TRANSPORT AND SEPARATION OF COBALT, NICKEL AND COPPER IONS WITH ALAMINE LIQUID MEMBRANES, Journal of chemical technology and biotechnology, 64(3), 1995, pp. 293-297
The transfer and separation of Co(II), Ni(II) and Cu(II) ions across a
flat-sheet supported liquid membrane containing Alamine 336 as the mo
bile carrier dissolved in kerosene solvent has been investigated. Both
the Alamine composition in the organic solution and the hydrochloric
acid concentration in the feed solution have a marked effect on Co(II)
and Cu(II) transport. A maximum flow of these ions at 50% of Alamine
in the diluent was obtained. Ni(II) ion was not transported in the who
le range of experimental conditions studied and good separation from C
o(II) and Cu(II) could thus be performed. With decreasing hydrochloric
acid concentration in the feed solution the separation factor of Cu(I
I) from Co(II) increases thus decreasing the Cu(II) recuperation facto
r.