Abstract
The full cycle of bioethanol production from pretreated oat hulls is scaled for a pilot plant. The one-stage pretreatment of oat hulls with a dilute nitric acid at atmospheric pressure is scaled for a 250-L reactor. The total amount of hydrolysable polysaccharides in the resulting substrate is 87.2%. Using the commercially available enzyme preparations CelloLux-A and BrewZyme BGX and the industrial strain BKPM Y-1693 of Saccharomyces cerevisiae yeast, the process of enzymatic hydrolysis and alcoholic fermentation is successfully scaled for a 63-L reactor. The scaling factor is 1: 400. Bioethanol is obtained with a high yield of 17.9 daL/t. After rectification, the test sample of bioethanol meets the standards for high-purity alcohol from food raw materials according to the mass concentration of aldehydes, esters, and by the content of methanol.
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Original Russian Text © O.V. Baibakova, E.A. Skiba, V.V. Budaeva, G.V. Sakovich, 2017, published in Kataliz v Promyshlennosti.
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Baibakova, O.V., Skiba, E.A., Budaeva, V.V. et al. Preparing bioethanol from oat hulls pretreated with a dilute nitric acid: Scaling of the production process on a pilot plant. Catal. Ind. 9, 257–263 (2017). https://doi.org/10.1134/S2070050417030023
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DOI: https://doi.org/10.1134/S2070050417030023