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2017 | 132 | 3 | 1002-1005
Article title

Preparation and Characterization of High Purity Silica Obtained from Rice Husks

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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
Year
Volume
132
Issue
3
Pages
1002-1005
Physical description
Dates
published
2017-09
References
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Document Type
Publication order reference
YADDA identifier
bwmeta1.element.bwnjournal-article-app132z3-iip052kz
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