Removal and Recovery of Chromium (III) with Emulsion Liquid Membrane of D2EHPA

A. O. ACOSTA; C. ILLANES; J. MARCHESE

DESALINATION AND WATER TREATMENT

DESALINATION PUBL

Año: 2008 vol. 7 p. 18 - 24

1944-3994

In this paper the results of the transport of Cr(III) in a emulsion liquid membrane (ELM)  are described containing as carrier di (2-ethyl-hexyl)phosphoric acid (D2EHPA) The appropriate conditions for the chromium transport through the ELM were obtained from results of liquid-liquid extraction and stripping partition experiments.  The effect of both ionic concentrations of sulphuric acid and ammonium persulphate as strippant in the acceptor solution (internal phase); different constitutions from the liquid membrane (carrier concentration, amount of liquid paraffin like additive) and the influence different relations from aqueous internal phase/organic phase in the emulsion have been analyzed in the transport of chromium in the ELM.