FIELD: chemistry.
SUBSTANCE: method of producing bioethanol from lignocellulose material involves preliminary processing of raw material at atmospheric pressure, combination of steps enzymatic hydrolysis and alcohol fermentation, extraction of bio-ethanol from brew. At that, preliminary processing of raw material with moisture content of 12-60 % is carried out at atmospheric pressure with diluted acid with concentration of 4-10 % at 94-96 °C with subsequent treatment with sodium hydroxide solution with concentration of 3-6 % at 94-96 °C. Enzymatic hydrolysis is carried out at pH 4.0-6.5 at temperature 30-65 °C. Material used is renewable lignocellulose material: straw, fruit shell cereal and oil crops, silver grass, pulp and cake of crops. Invention provides output of bio-ethanol from 1 t of raw material equal to 8.5-20.5 dal.
EFFECT: method of obtaining bio-ethanol from lignocellulose material.
1 cl, 7 ex
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