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The aim of this research to investigate the influence of temperature and additive effect of coconut shell charcoal on the density and porosity of ceramic membranes based on zeolite and soil. With the addition of additives in the form of charcoal can reduce the density of ceramic membranes. It can also increase porosity of ceramics and clay based zeolite membranes. The results of the study show that based on the results of the Scanning Electron Microscopy (SEM), it can be seen that the largest pore size is owned by samples containing 80% zeolite and 10% additional. The number of pores produced depends on how much additive content is contained in the sample. The conclusion is that there is a tendency for the temperature to rise and the more additives contained in the sample, the more pores produced.