Air-sintered silicon (Si)-bonded silicon carbide (SiC) hollow fiber membranes for oil/water separation |
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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. School of Resources and Environmental Engineering, Shandong University of Technology, Zibo 255049, China;2. School of Materials Science and Engineering, Shandong University of Technology, Zibo 255049, China;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. IC2MP (UMR CNRS 7285), Université de Poitiers, 1 rue Marcel Doré, 86000 Poitiers, France;2. UFPR, 1299 Rua XV de Novembro, 80060-000 Curitiba, Brazil;3. TotalEnergies, Route de Bayonne, 64170 Lacq, France |
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| Abstract: | In this work we evaluated the effect of adding Si as sintering additive into SiC for producing air-sintered hollow fiber membranes. According to crystallographic analyses, SiC and Si were converted to SiO2 after sintering at 1350 °C. The addition of 30 wt% of Si into SiC ceramic material promoted the binding of SiC particles and improved the membrane mechanical resistance to 42.25 ± 3.39 MPa after air sintering at 1350 °C. The produced asymmetric ceramic membrane presented a packed pore-network and micro-voids with pore sizes of 1.73 and 5.29 μm, respectively. The filtration of an oil/water emulsion enabled oil retention 98.75 ± 0.95 %. Cake formation was the main fouling occurrence and membrane regeneration with equivalent oil retention and similar steady sate flux was achieved after water cleaning under ultrasound irradiation. Thus, the use of Si as air-sintering aid was favorable for producing Si-bonded SiC hollow fiber membranes with suitable application for oil/water separation. |
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| Keywords: | Silicon carbide Silicon Oxidation Hollow fiber Membrane |
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