Abstract
In-situ reaction bonded porous SiC ceramic membrane supports were successfully synthesized by economical way at 1300 °C in air using waste zeolite residue and alumina as sintering additive. The effects of additives content and sintering temperature on material, mechanical and permeabity properties were carefully investigated. The ceramics prepared at 1300 °C with a 20 % mixture of zeolite residue and alumina obtained with a very high mechanical strength of 114.85 MPa at a porosity of 28.90 vol% and exhibited pure water permeability of 1258 L.h-1.m-2.bar−1. Additionally, the support prepared in this study exhibited good chemical resistance in acid and alkali medium for long periods.The utilization of zeolite residue reduced the sintering temperature for fabrication of membrane support and provided a flexible strategy to control the mechanical performance and water permeability. The filtration and permeation results indicated that SiC membrane support prepared in this study is suitable for various applications, particularly in water treatment.
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