Extraction of Cd2+ ions from MDLM System with TNOA carrier

Abstract

The extraction of Cd2+ ions via a new Multi-Dropped Liquid Membrane System: Extraction of Cd2+ ions from the solution phase wasstudied by using the multi-dropped liquid membrane system, which is different from other liquid membranes. The extraction of Cd2+ ionsthrough multi-dropped liquid membrane containing tri-n-octyl amine in kerosene as mobile carrier and protons as counter ions in the acceptorphase (CH3COONH4) was investigated. Donor, acceptor, and the organic phase in the reduced concentration of Cd2+ model time dependencecurves showed a good fit to experimental data obtained. The activation energy in the extraction mechanism of Cd2+ ions was calculatedto be 17.07 kcal/mol. The value of this calculated activation energy indicates that the extraction of Cd2+ ions with the multi-droppedliquid membrane system is chemically controlled. The experimental results suggest the possibility of removing Cd2+ ions from aqueoussolution in an extractor based on multi-dropped liquid membrane system.