Membrane characterisation from the support to the skin layer: Application to silicon carbide (SiC) membranes |
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| Affiliation: | 1. Aix Marseille Univ, CNRS, Centrale Marseille, Laboratoire de Mécanique Modélisation et Procédés Propres (M2P2 UMR 7340, Equipe Procédés Membranaires (EPM), Europôle de l′Arbois, BP80, Pavillon Laennec, Hall C, 13545 Aix en Provence cedex, France;2. Institut Universitaire des Systèmes Thermiques Industriels (IUSTI-CNRS-UMR 6595), Aix-Marseille Université Technopôle de Château-Gombert, 5 rue Enrico Fermi, 13453 Marseille cedex 13, France;3. Institut des Sciences de la Vigne et du Vin, UFR ?nologie, Axe Qualité et Identité du Vin, 210 Chemin de Leysotte, 33882 Villenave d′Ornon, France;4. Saint-Gobain Research Provence, 550 Avenue Alphonse Jauffret, CS 20224, F84306 Cavaillon Cedex, France;1. State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China;2. School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China;3. Suzhou Research Center, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Suzhou, 215411, China;1. Beijing Key Laboratory of Advanced Ceramic and Refractories, Central Iron & Steel Research Institute, Beijing, 100081, China;2. State Key Laboratory of Multi-phase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China |
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| Abstract: | SiC membranes are used in many industrial fields with high performances and good retention efficiency in the filtration of loaded liquids such as wastewater, oil or wine. Technologies allow to characterise membrane’s surface but few allow the characterisation of its depth. This paper proposes the combination of results obtained by the usual techniques of porous materials and by 3D X-ray tomography characterisation. A morphological analysis of solid and porous phase is carried out on the total thickness of the membrane. Combination of results on all layers is relevant for the study of SiC membranes, showing not only the SiC surface properties but also the 3D description of the porous material (i.e. support, layer and skin). The definition of essential parameters to define the efficiency of a filtration such as hydrophobicity, porosity and tortuosity allows to justify the use and superior performance of SiC membranes for the filtration of loaded liquids. |
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| Keywords: | Silicon carbide membranes 3D reconstruction Characterisation Microstructure properties Nanotomography |
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