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Utilization of Fly Ash for a Support Layer of Pervaporation Membrane

Fly ash is a byproduct of coal combustion, which has not maximally been utilized. In this paper, fly ash is used for a support layer of pervaporation membrane. Initially fly ash was screened by using either 100 or 200 mesh sieve filter. A paste mixture of fly ash, alumina, kaolin and other additives was prepared and molded with different pressures into a flat membrane support. The resulting membrane supports were characterized intern of mechanical property, surface morphology (by scanning electron microscope) and crystallinity (by X-ray Diffraction). The results show that the pressure used for the molding process as well as calcination process has an influence on the resulting membrane support characteristics.