Extraction of Silica from Rice Husk and Bamboo Leaves and its Effect on the Ceramic Body Glazing Process

Abstract

Rice husk and bamboo leaves are types of agricultural wastes that can easily be found around the world. Rice husk contains over 60 % of organic silica while silica bamboo leaves extract consist of more than 70 % silica content. Parameters such as concentration of acid and weight percentage of rice husk and bamboo leaves used during acid leaching method were also compared. In this paper, citric acid (C6H8O7) was used for production of silica from rice husk and bamboo leaves. Samples were characterized using X-Ray Fluorescence (XRF) and Field Emission Scanning Electron Microscope Energy Dispersive X-Ray spectroscopy (FESEM / EDX). The performance of glaze on ceramic will be analyzed by undergoes hardness testing. The result indicates that highest percentage silica of rice husk and bamboo leaves after leaching was on 1.0M.