Environmentally friendly way of pretreatment of cellulosic raw material for sugar used in the production of biofuels, offer scientists IrGTU.
Studies on the Chemistry Department of Food Technology and University have shown the efficacy of supercritical carbon dioxide to clean straw cereals from impurities, preventing its effective enzymatic hydrolysis, in which is received and sugars.
As the Project Manager, Head of the Department of Chemistry and Food Technology Irkutsk State Technical University, Professor Sergei Evstafyev, this use of the carbon dioxide was first proposed. In February 2013?, The IrGTU received a patent for this method of pretreatment of lignocellulosic raw materials and plant for its implementation.
— Sugars produced by enzymatic hydrolysis of agricultural residues (oat and wheat straw) can be used as raw material to produce biofuels (bioethanol and biobutanol) — says S. Evstafyev. — However, the stage of pretreatment of lignocellulosic feedstock for fermentoliza is the most problematic from the point of view of ecology. Widely used in the present chemical method — the use of chemical reagents — first, causing significant damage to the environment, and secondly does not provide ecologically pure product. The method proposed by us, solves these problems.
According to S. Yevstafyeva, now scientists of chemistry and food technology Irkutsk State Technical University, together with colleagues from the Siberian Institute of Plant Physiology and Biochemistry (SIPPB) RAS selected microorganisms, allowing for a fermentation of sugars derived biofuel — biobutanol.