METHOD FOR INCREASING BACKSET RECYCLE IN DRY GRIND ALCOHOL PRODUCTION
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United States of America Patent
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Oct 20, 2022
app pub date -
Sep 9, 2020
filing date -
Sep 13, 2019
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Abstract
The present invention relates to a dry grind ethanol process in which post-distillation backset is subjected to aerobic fermentation to remove components that are inhibitory to an ethanolagen, such as yeast, allowing the utilization of an increased amount of post-distillation backset during the initial preparation of starch-containing substrates for the dry grind ethanol process. Aerobic fermentation of the post-distillation backset allows substantially higher backset recycle, resulting in fresh water savings and increased sustainability.
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