Preparation and Characterization of High Purity Silica Obtained from Rice Husks

• Authors: Y. Şımşek
• Languages of publication: EN

Abstracts

EN

Although SiO₂ is produced mostly from mineral sources like quartz, it has recently been obtained from lignocellulosic natural resources, such as rice husk (hull). Several methods for extracting silica (SiO₂) from rice husks are available in the literature. These methods are based essentially on heat treatment and/or extraction. This study represents a thorough account of heat treatment and acid-base extraction, to obtain silica from rice husks with a high purity and to eliminate other inorganic impurities. Rice husks, considered to be a potential silica source, were pretreated with various acids, base and water and then thermally degraded in a fixed bed reactor under an inert gas atmosphere (N₂). The materials produced in these conditions were characterized by Brauner-Emmett-Teller analysis, for surface area and pore volume, by Fourier transform infrared spectroscopy, powder X-ray diffraction, X-ray fluorescence, and scanning electron microscopy.

Keywords

EN

81.20.-n; 81.20.Ka; 81.40.-z

Discipline

• 81.20.-n: Methods of materials synthesis and materials processing(see also 61.72.U- Doping and impurity implantation; for crystal growth, see 81.10.-h; for film growth, deposition and epitaxy, see 81.15.-z)
• 81.40.-z: Treatment of materials and its effects on microstructure, nanostructure, and properties
• 81.20.Ka: Chemical synthesis; combustion synthesis(for electrochemical synthesis, see 82.45.Aa)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2017
• Volume: 132
• Issue: 3
• Pages: 1002-1005

Dates

published

2017-09

Contributors

author

Y. Şımşek

• Bilecik Şeyh Edebali University, Chemical and Process Engineering Department, Bilecik, Turkey

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Identifiers

DOI

10.12693/APhysPolA.132.1002