Properties of amorphous silica produced from rice and oat processing waste

Data are presented on the purity (concentrations of metal oxides), morphology (particle size and shape), specific surface, pore diameter, density, and water solubility of amorphous silicas prepared from rice husk, rice straw, and oat husk. It is shown that rice and oat processing wastes can be used as raw materials for the production of high-purity amorphous silica ranging in particle size from 0.02 to 100 mu m.