Spectroscopic Studies of Different Kind of Rice Husk Samples Grown in North of Iran and the Extracted Silica by Using XRD, XRF, IR, AA and NMR Techniques
 
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Faculty of Chemistry, Mazandaran University, Babolsar, Iran
Online publication date: 2008-11-01
Publication date: 2008-11-01
 
Eurasian J Anal Chem 2008;3(3):298–306
 
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ABSTRACT
In this study rice husk ashes (RHAs) werte obtained from different rice growing in the North of Iran. X-ray diffraction (XRD) and X-ray fluorescence (XRF) spectrometry and IR were applied for determination of crystallinity and analysis of mineral content and chemical bonding in extracted silica respectively. Our results showed that concentration of silica in Fajr rice husk is higher compared to other kind of rice husk samples. The effect of calcinations at different temperatures 600, 700, 800 and 900 C on extracted silica was also considered. In the process of silica extraction, increasing the temperature led to great porous volume in silica network.
 
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