Some advanced materials from the rice processing waste and their application in various branches of industry and agriculture

Abstract

The following method has been proposed for processing the rice hulls with producing some advanced materi-als. The solid product (silicacarbon) is a nanocomposite produced by nanoparticles of carbon and silicon dioxide with the size of 10–20 nm, which were present in the amorphous form. The product composition in % is as follows: С – 51–53; SiO2 – 37–39; hydrocarbon compounds – 8–9; inorganic elements impurities – 1–3. Silicacarbon proved to be advanced filler of alastomers and special carbon goods, sorbent and fodder sup-plement for the farm poultry; in addition this product can be used for producing crystal whiskers ß- SiC and polycrystalline silicon. The organic product (aqueous solution of carboxylic acids, phenols, ketones, cyclic aliphatic hydrocarbons, and spirits) is a high-selective collector, plant growth stimulant and an antiseptic agent. The production facility has been built up for producing 4.5 kg per hour of silicacarbon and 4.5 kg per hour of organic product. The advanced materials have tested in various branches of industry and agriculture. Technical and economic assessment has been made for the industrial-scale production of 1,000 tons of silica-carbon and 1,000 tons of organic product per year. The production profitability is 153%.