Abstract
During this work, new porous ceramics based on granitic sand were prepared and their properties were characterized. The choice of this material is based on its natural abundance (low price). Powders mixed with certain organic additives can be extruded to fabricate a porous tubular configuration with a highly uniform porous structure. The sintering temperatures lay between 960 and 1070 °C. A ceramic membrane fired at 1040 °C had a mean pore diameter of 10 μm and the porosity was 45%. The obtained results allow to conclude that granitic sand membranes can be used both in tangential microfiltration and as supports of ultrafiltration.
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