PENGGUNAAN KAOLIN, LEMPUNG SUKABUMI DAN GROG DARI LIMBAH PECAHAN BATA TAHAN API SERTA BATUBARA SEBAGAI ZAT TAMBAHAN ORGANIK DALAM PEMBUATAN MEMBRAN KERAMIK UNTUK FILTER AIR

The making of ceramic membrane for water filtration from Babel�s kaolin, Sukabumi�s clay, grog (from the waste of broken fireclay bricks) and coal as organic additive has been done. Composition of coal powder varies from 0, 5, 10 to 50% (in percent of mass of clay�s mass). The temperature sintering is 1200° C with rate of sintering 2° C per minute. The process of making sample using dry press molding�s method with cylinder dimension and the pressure is 17,45 Mpa. The examination of physics and mechanics characteristic is burn�s shrink, water absorption, compressive strength and the ability of membrane on reducing the turbidity of water, whereas microstructure analysis and micro�s photo using XRD (X-ray diffractometer) and SEM (Scanning Electron Microscopic). The performance test shows there is a saturation point on 25% composition. The greatest compressive strength ( 9.08 MPa) belongs to membrane with 0% composition and the lowest (0.25) MPa is a membrane with 50% composition. The result from the XRD-test indicates that the major formed-phases are mullite and quartz, and the minor formed-phase is cristobalite high. From the micro�s photo shows that membrane with 45% coal more sintered completely than membrane with 5% coal (in percent of mass of clay�s mass)