Effect of Temperature and Additives of Carbon For Density And Porosity of Ceramic Membranes Based On Zeolites And Clays
A S Budi, H Nasbey

Universitas Negeri Jakarta

Abstract

Ceramic membranes based on zeolites and clays with additives of carbon has been made. The purpose of this study was to determine the effect of temperature and additives of carbon for density and porosity of ceramic membranes. In this study, ceramic membranes was made in five different compositions and used pressing methods to compact the ceramic powder that poured into a die and pressurized. The samples sintered at temperature of 350oC, 450oC, 550oC, 650oC, and 750°C for 3 hours. Based on SEM data, it is shown that ceramic membranes that contains coconut shell charcoal additives are preference have more porous and larger diameter. The results of EDS showed that ceramic membranes have compounds such as, Al2O3, SiO2, MgO, CaO, and K2O. From the data presented porosity and density, it can be concluded that pore formation and density of ceramic membranes is affected by the additive coconut shell charcoal and sintering temperature. More additives are added, then density decreases from 1.25 gr/cm3 to 1.04 gr/cm3, the greater porosity from 30.60% to 61.28% and the pore size increases from 20 μm to 65 μm. While, based on the sintering temperature, the higher temperatures that used for sintering made the density increased from 1.41 gr/cm3 to 1.57 gr/cm3, porosity decreased from 28.3% to 26.4% and the pore size increased from 25 μm to 65 μm.

Keywords: membrane, additives, temperature, porosity, density

Topic: Material Science