Kinetic and thermodynamic study of simultaneous extration and stripping process of silver using Cyanex 302

Abstract

Emulsion liquid membrane is one of separation method that involves three liquid phases which is internal phase, external phase and membrane phase. ELM is the effective separation method which provides a potentially powerful technique for metal separation and recovery. The kinetic and thermodynamic of silver extraction were studied. Several parameters governing the extraction behavior of silver have been investigated. These parameters were agitation speed, carrier concentration, surfactant concentration, external concentration and extraction time. Surfactant, carrier and diluent used were Span 90, Cyanex 302 and Kerosene respectively. Under optimized experimental conditional, the higher rate of silver extraction can be achieved. As a conclusion, by increasing the concentration of Span 80, Cyanex 302, agitation speed, extraction time and external concentration, the higher percentage and rate of silver extraction can be obtained.