Adsorption of a gold‐iodide complex (AuI₂⁻) onto cellulose acetate‐polyaniline membranes: Equilibrium experiments

Abstract

Abstract The adsorption of AuI complex onto acetate cellulose‐polyaniline membranes was investigated. Kinetic experiments showed a rapid adsorption of this complex, which was attributed to an ion‐exchange mechanism. Equilibrium adsorption results were represented by the Langmuir model, showing a correlation coefficient of 0.9852. Langmuir parameters K and Q m were found to be 0.2937 L mg −1 and 1.2394 mg g −1 , respectively. Approximately 94% of AuI was adsorbed when a solid/liquid ratio of 40 g L −1 (grams of membrane/ liter of solution) was used. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2009