METHODS OF PRODUCING LOW-ACETAL ETHANOL
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Sep 12, 2024
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Jan 7, 2022
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Jan 7, 2021
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Provided is a method for the production of refined, low-acetal ethanol, comprising providing a fermentation product produced by fermentation of a carbon source with an ethanol-producing organism, which fermentation product comprises between 30% wt and 99% wt ethanol, between 70% wt and 1% wt water and between 20 and 2000 parts per million acetal; contacting said fermentation product with an acid catalyst, whereby at least 20% of the acetal hydrolyses to form a hydrolysis product comprising ethanol, water, acetaldehyde and optionally residual acetal; and distilling said hydrolysis product, whereby distilled, low-acetal ethanol is formed.
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