Preparation of Ceramic Membranes Using Industrial Waste as the Main Raw Materials: Effect of Particle Size and Sintering Temperature on the Porosity

  • Ms Norliza Ibrahim, Universiti Teknologi MARA, Malaysia
  • Dr Murthy Veluri, Universiti Teknologi MARA, Malaysia
  • Dr Teng Dung, SIRIM Berhad, Malaysia
  • In Malaysia, it has been reported that enormous rejects being generated every year by sanitary company. A preliminary characterization of the rejects obtained from a local sanitary company shows the presence of minerals like quartz, which is one of the main and suitable element for the formation of asymmetric structure. Therefore, it may be possible to manufacture ceramic membrane from this waste. In this study, the preparation and characterization of ceramic membrane made from fine industrial waste powder were investigated. Plastic behaviour of several prepared industrial waste-ceramic pastes is presented. Pfefferkorn method was applied in order to provide the plasticity index (PI) of the ceramic paste. This characterization was performed in order to gain some insights in preparing ceramic formulations for extrusion forming in the fabrication of ceramic membrane. Effect of particle size was varied. The extrudate was then sintered using three different sintering temperature. The sintered membrane was then characterized based on the porosity value. It was found that the moisture required for industrial waste ceramic-paste extrusion process are 18.3-21.4 % and 17.9-19.3% for paste with particle sizes of <45 micron and >71 micron respectively. Meanwhile, results show that almost 40% porosity is able to be obtained using higher particle size distribution. However, further improvements in working conditions should be optimized in order to have a ceramic membrane with good physical properties.