Abstract
Preparation and Characterization of Amorphous Silica and Calcium Oxide from Agricultural Wastes
Supachai Sompech1,Thananchai Dasri1 and Sukhontip Thaomola2,*
DOI : http://dx.doi.org/10.13005/ojc/320418
Abstract:
Rice husk ash and bagasse ash were agricultural wastes that provide an abundanceof the silica (SiO2) source and the chicken eggshells and duck eggshells were important sources forcalcium oxide (CaO). Therefore, in this study the rice husk ash and bagasse ash were used as raw materials for synthesisofsilica powder,while chicken eggshells and duck eggshells were synthesized forthe calcium oxide.The results from the XRD pattern clearly showedthe structural formation of amorphous SiO2 and CaO phase. While the FTIR results indicated that the spectrums which displayedthe characteristic peaks of the functional groups presenting in the SiO2 and CaOpowder. However, the SEM images revealed that the particles agglomerated, various sizes and the particle size were found to be in micron level.
Keywords:Rice husk ash; Bagasse ash; Chicken eggshells; Duck eggshells; Agricultural wastes
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