Abstract

This article describes our study on the removal of Cr(VI) with the emulsion membrane formed from trioctylamine, secondary capryl alcohol and tributyl phosphate as carriers, Span-80 and Lan-113 as surfactants, and kerosene as the membrane solvent. Further, we have performed an orthogonal experiment regarding the carriers, surfactants for individual use and in combination. We also determined the way in which operational conditions, such as Roi, Rew, the internal and external phase pH values, emulsification mixing speed, time and waste/emulsion mixing rate affected the removal rate of Cr(VI).