Effect of Rice Husk Firing Temperature on Synthesis of Silica (SiO₂)

Abstract:

This paper presents the synthesis of silica (SiO₂) from rice husk at different firing temperatures. Due to the environmental awareness and to reduce air pollution, agricultural wastes specifically rice husk is used to produce SiO₂. Silica was prepared by washing with clean water without any chemical treatment. The rice husk was fired at 700, 800, 900, 1000, 1100 and 1200°C. In order to determine the effect of firing rice husk at different temperature, X-ray Diffraction (XRD) analyses were conducted. Crystalline silica were obtained at 1100°C and 1200°C firing temperature. At 900°C and 1000°C firing temperature, silica was observed to be in a transitional phase of amorphous into crystalline or it called as semi crystalline. However, at 700°C and 800°C silica remains to be in amorphous phases.

• Periodical: Advanced Materials Research (Volume 1087)
• Pages: 470-474
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1087.470
• Online since: February 2015
• Authors: N.A.A. Ismail, M. Azham Azmi*, Sufizar Ahmad, Hariati Taib
• Keywords: Amorphous Silica, Crystalline Silica, Rice Husk, X-Ray Diffraction (XRD)

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