Process of Facilitated Extraction of Vanadium Ions through Supported Liquid Membranes: Parameters and Mechanism
| Autor: | Miloudi Hlaïbi, El Houssine Atmani, Imane Touarssi, Tarik Eljaddi, Laurent Lebrun, I. Mourtah, Oussama Kamal |
|---|---|
| Přispěvatelé: | Université Hassan II [Casablanca] (UH2MC), Polymères Biopolymères Surfaces (PBS), Institut national des sciences appliquées Rouen Normandie (INSA Rouen Normandie), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut de Chimie du CNRS (INC)-Institut Normand de Chimie Moléculaire Médicinale et Macromoléculaire (INC3M), Institut de Chimie du CNRS (INC)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Normandie Université (NU)-Institut national des sciences appliquées Rouen Normandie (INSA Rouen Normandie), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Université Le Havre Normandie (ULH), Normandie Université (NU)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Université de Caen Normandie (UNICAEN), Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Université Le Havre Normandie (ULH), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Article Subject Diffusion Extraction (chemistry) General Engineering Vanadium chemistry.chemical_element Substrate (chemistry) 02 engineering and technology Resorcinarene 021001 nanoscience & nanotechnology Ion [CHIM.THEO]Chemical Sciences/Theoretical and/or physical chemistry Membrane [CHIM.POLY]Chemical Sciences/Polymers 020401 chemical engineering chemistry Phase (matter) lcsh:TA401-492 Physical chemistry [CHIM]Chemical Sciences lcsh:Materials of engineering and construction. Mechanics of materials General Materials Science 0204 chemical engineering 0210 nano-technology |
| Zdroj: | Advances in Materials Science and Engineering Advances in Materials Science and Engineering, Hindawi Publishing Corporation, 2017, 2017, pp.1-12. ⟨10.1155/2017/3425419⟩ Advances in Materials Science and Engineering, Vol 2017 (2017) |
| ISSN: | 1687-8434 1687-8442 |
| Popis: | To conduct experiments related to the facilitated extraction phenomenon of vanadium ions (VO2+), three supported liquid membranes (SLMs) were prepared, each containing 0.01 M of methyl cholate (MC), resorcinarene (RESO), or trioctylamine (TOA) as extractive agents. Kinetic and thermodynamic models were developed, based on the interaction of the substrate (VO2+) with the extractive agent T and the diffusion of the formed entity (TS) through the membrane. The experimental results verify the models, and to determine, macroscopic parameters, permeabilities (P) and initial fluxes (J0), and microscopic parameters, association constants (Kass) and apparent diffusion coefficients (D⁎) related to formed entities (TS) and their diffusion through the membrane organic phase. The experimental results indicate that the mechanism on the migration of the VO2+ ions through the membrane organic phase is based on the successive jumps of substrate, from one site to another of the extractive agent. To explain these results and understand the mechanism, we studied influence of temperature factor, and we determined activation parameters (Ea, ΔH≠, and ΔS≠). The results show that this extraction phenomenon is governed by a structural term. Therefore, the membrane performance changes according to nature and structure of the association site presented by each of extractive agents. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Plný text