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EVALUATION OF EXTRACTIVE BATCH ETHANOL FERMENTATION AT HIGH TEMPERATURE WITH CO2 STRIPPING

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In the present work, it was evaluated the removal of ethanol during an extractive batch fermentation at high temperature with CO2 stripping. A conventional batch fermentation (40 °C) (without ethanol removal) was performed as control experiment and, subsequently, an extractive fermentation at 40 °C with ethanol removal by CO2 stripping was carried out. It was verified an increase in the ethanol productivity of 41.4% compared to the conventional fermentation. Thus, the ethanol removal from the fermentative broth at 40 °C showed as an alternative to decrease the inhibitory effect of ethanol on yeast.