FABRICATION AND CHARACTERIZATION OF RICE HUSK SILICA WATER FILTER: A SHORT REVIEW

Abstract

Due to the high demand for water filtration technology in developing countries, various materials have been used for water filter fabrication. However, silica derived from rice husk was believed to be a low-cost agro waste due to the abundant production of the waste material has several benefits needed by industries due to its chemical and physical properties. Researchers were interested in using rice husk-derived materials for water purification in variety forms such as biochar, activated carbon, silica, and hydrogels. In order to fabricate effectively filter water, it is important to consider its morphology, structure, chemical composition, and surface area, which draws scientists to develop new technologies. Therefore, this review is carried out to see how things are currently done to the excellent technique for ceramic filter made up husk-based silica and their characteristics. In this article, two types of manufacturing processes, namely dry pressing and slip casting, and their morphology, porosity and density, and phase analysis were studied. The analysis showed that the sintering temperature and the composition of the raw material significantly improve the morphology and porosity of a silica water filter. However, the technology of silica water filters still needs to be improved and modified so that it can be used to treat various environmental pollutants.