Design of ceramic filters using Clay/Sawdust composites: Effect of pore network on the hydraulic permeability |
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| Affiliation: | 1. Electrochemistry and Chemistry of Materials, Faculty of Science, University of Dschang, P.O. Box 67 Dschang, Cameroon;2. Laboratory of Analytical Chemistry (LCA), University of Yaoundé I, P.O. Box 812 Yaounde, Cameroon;3. Laboratory of Analysis of Materials (LMA), Local Material Promotion Authority (MIPROMALO), Yaounde, P.O. Box 2396 Yaounde, Cameroon;4. Department of Engineering ‘Enzo Ferrari’, University of Modena and Reggio Emilia, Via Vignoles 905/A, 41125 Modena, Italy;5. SPCTS-UMR 7315, Centre Européen de la Céramique, Université de Limoges, 12 Rue Atlantis, 87068 Limoges Cedex, France;1. Geological Engineering Program, Missouri University of Science and Technology, 129 McNutt Hall, 1400 N Bishop Ave, Rolla, MO, 65409, USA;2. Department of Material Science and Engineering, Missouri University of Science and Technology, 223 McNutt Hall, 1400 N Bishop Ave, Rolla, MO, 65409, USA;3. Department of Geosciences, University of Missouri-Kansas City, 420 Flarsheim Hall, 5110 Rockhill Road, Kansas City, MO, 64110, USA;1. Department of Inorganic Chemistry, University of Yaoundé I, Faculty of Science, P.O. Box 812, Yaoundé, Cameroon;2. Institut Europeen des Membranes, UMR 5635 CNRS ENSCM UMII, CC 047, Place Eugene Bataillon, F-34093 Montpellier Cedex, France;3. Department of Applied Chemistry, University of Ngaoundéré, P.O. Box 455, Ngaoundéré, Cameroon;1. Universidad Santiago de Cali, Faculty of Engineering, GIEIAM Research Group, Street 5 # 62-00, Cali, Colombia;2. Universidad de Boyacá, Faculty of Science and Engineering, Research Group of Management of Water Resources, Carrera 2E # 64-169, Tunja, Colombia;3. Universidad de Boyacá, Faculty of Science and Engineering, Research Group of Environmental Management, Carrera 2E # 64-169, Tunja, Colombia |
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| Abstract: | Clay based ceramic composite materials with hydraulic permeability were elaborated using sawdust as porogent agent. Their mechanical, morphological, microstructural and pore network properties were investigated. Mixtures in various ratios of two kaolinite clay minerals, Ba (highly plastic) and Va (sand-rich) constitute the five ceramic matrixes studied (CM1, CM2, CM3, CM4 and CM5). Due to their high flexural strength, CM3 and CM4 received 0%, 5%, 10% and 15% sawdust before firing, to improve the porosity of the final matrixes. Results revealed that 900–1000 °C is the range of temperature necessary to get good sintering and flexural strength (≥2 MPa). A typical clay-sawdust based materials (parallepipedic bricks) present porosity ≥40 vol% and 1.5 g/cm3 density. Characterizations such as FTIR, SEM, MIP and flow permeability of ceramic candles were performed. A Hydraulic permeability of ~10 mDarcy was obtained and the mean pore diameter varies from 0.05 to 0.1 µm, in agreement with the microstructure exhibited by the ceramic candles. In the presence of sawdust, pores with size up to 10 µm were observed, justifying the increase of flowing permeability. The elaborated matrixes are promising candidates for microfiltration. |
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| Keywords: | Filter Hydraulic permeability Ceramic Porosity |
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