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

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

The adsorption of AuI₂ ⁻ 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 correlati...

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Veröffentlicht in:Journal of applied polymer science 2009-08, Vol.113 (4), p.2670-2674
Hauptverfasser: Rodríguez, F, Castillo-Ortega, M.M, Encinas, J.C, Sánchez-Corrales, V.M, Pérez-Tello, M, Munive, G.T
Format: Artikel
Sprache:eng
Schlagworte:
Acetates
Adsorption
Applied sciences
Cellulose acetate
conducting polymers
Correlation coefficients
Exact sciences and technology
Exchange resins and membranes
Forms of application and semi-finished materials
ion exchangers
Liquids
Mathematical models
Membranes
Polymer industry, paints, wood
Reproduction
separation techniques
Technology of polymers
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Zusammenfassung:The adsorption of AuI₂ ⁻ 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 Qm were found to be 0.2937 L mg⁻¹ and 1.2394 mg g⁻¹, respectively. Approximately 94% of AuI₂ ⁻ was adsorbed when a solid/liquid ratio of 40 g L⁻¹ (grams of membrane/ liter of solution) was used.
ISSN:0021-8995
1097-4628
1097-4628
DOI:10.1002/app.30337