Extraction of Chromium with Liquid Surfactant Membranes Containing TOA Carrier

Time courses of chromium concentrations in the external, organic and internal phase

Abstract

This study dealt with the extraction of chromium in an acetic acid solution with liquid surfactant membranes in which the carrier was a small quantity of tri-n-octylamine, TOA, and three surfactants, Span80, Polyamine-E and Polyamine-L, were used. The chromium concentrations in the external, organic and internal phases, and the swelling of the W/O emulson, were measured. Further, the chromium molar ratios changes with time in the external, organic and internal phases were calculated.