Continuous Transport of Zn(II) by Ammonium Chloride Media via Supported Liquid Membrane System

Abstract

With the gradual depletion of traditional zinc resources, the full use of various non-traditional zinccontaining resources has received intensive attention. However, the efficient recovery of zinc ions with low concentrations remains challenging. Here efficient and continuous recovery of zinc ions in ammoniacal chloride media by a flat supported liquid membrane system is achieved, using Cyanex923 and TBP mixed extractant as the membrane phase. This article discusses the synergistic effect between Aliquat336, Cyanex923 and TBP, the effects of feed pH, total ammonia concentration, Cl À concentration and temperature on Zn(II) transport.