Transportive Separation of Palladium, Gold and Platinum though Cellulose Fiber Supported Solid Membrane

Abstract

Transportive separation of palladium, gold and platinum were explored though cellulose fiber supported solid membrane from source to receiving phase in the mixed solvents. Cellulose fiber supported solid membrane technique based on the capillary action and ion exchange mechanisms was used to study the transportive separation of metal ions. Cellulose fiber supported solid membrane was prepared by chemically modification using the esterification reaction with citric acid. The experimental variables explored were concentration of palladium, gold and platinum metal ions (10 -2 to 10 -4 M) in the source solution, mixed solvent composition (20 % v/v Aliquat-336 (tricapryl methyl ammonium chloride), acetone or tetrahydrofuran or 1, 4 dioxane or methanol or ethanol or 2-propanol 10 to 60 % and HCl 0.1 to 1 M) in the receiving phase and stirring speed (40-120 rpm) of the bulk phases The enrichment of concentration of palladium, gold and platinum metal ions was carried out from the dilute solutions.