Rice hull as a renewable raw material and its processing routes

Abstract

It was shown that rice hull has a unique composition and can be used as a renewable raw material. A method for rice hull conversion into polyfunctional materials was proposed, which gives a solid product, a liquid organic product, and a mixture of noncondensable gases. The solid product is suitable as a filler for elastomers, fodder supplement for farm poultry, and sorbent for noble and rare metal recovery. The liquid product acts as a highly selective collector of lead minerals in beneficiation of complex rebellious ores, plant growth stimulant, and antiseptic agent. The mixture of noncondensable gases can be used for carbon black production or as a high-calorific fuel.