CAPILLARY VELOCITY OF NATURAL ZEOLITE POROUS CERAMIC IN DIFFERENT SINTERING TEMPERATURES

Abstract

Lately, the membrane of porous ceramics begin to increase its utility since it contains good and supportive chemical substances, besides it is also resistant to heat and has stable force. However, its price is considered quite expensive because this type of ceramics is made from materials and is produced through complicated process. This study aims at utilizing the use of natural zeolite materials as the material to use for membranes which offers low price. This material can be used as a membrane because of its unique physical and chemical characteristics and it contains liquid adsorbent. In this study, the natural zeolite was obtained from Malang, Indonesia. Porous ceramic sintering is a process of ceramics making by baking the ceramic at the temperature of around 700–900 °C. In this study, the porosity and capillary velocity cylindrical porous ceramic were investigated. Density and porosity of the material were measured using the Archimedes method (ASTM C20). The capillary absorption coefficient was calculated using the standard MSZ EN 1925: 2000. The result of this study shows that the higher the sintering temperature, the greater the density and the smaller the open porosity produced in the process which increases the capillary velocity. This phenomena occured due to the greater driving force which makes the pores of porous ceramics made of natural zeolite and the capillary velocity is increased.

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