Grafted polymer membranes with extractive agents for the extraction process of VO2+ ions |
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Authors: | Oussama Kamal Tarik Eljaddi El Houssine EL Atmani Imane Touarssi Laurent Lebrun Miloudi Hlaïbi |
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Institution: | 1. Laboratoire Génie des Matériaux pour l'Environnement et la valorisation (GeMEV), Université Hassan II, Faculté des Sciences A?n Chock, Casablanca, Morocco;2. Laboratoire Polymeres, Biopolymeres, Surfaces, UMR 6270 du CNRS, Universite de Rouen, Faculté des Sciences, France |
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Abstract: | To conduct experiments related to the facilitated extraction phenomenon and recovery of vanadium ions VO2+, two grafted polymer membranes were prepared; containing respectively cholic acid and azithromycin as extractive agents and the obtained membranes were characterized. All experiments for the facilitated extraction phenomenon of these ions were carried out. Kinetic and thermodynamic models, based on the interaction of the substrate S (VO2+) with the extractive agent T, and the diffusion of the formed entity (TS) through the membrane were developed, to determine the macroscopic parameters, permeability P and initial fluxes J0, and the microscopic parameters, association constants Kass and apparent diffusion coefficients D*, related to the formation of entities TS and their diffusion. A clear evolution of these parameters, depending on various factors (substrate concentration C0, extractive agent concentration and feed and receiving phases temperature), and high permeabilities for this extraction phenomenon of VO2+ ions were observed for this membrane type. Copyright © 2016 John Wiley & Sons, Ltd. |
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Keywords: | Grafted polymer membranes facilitated extraction permeability association constant apparent diffusion coefficient activation parameters |
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