Abstract
ABSTRACTThe sweet sorghum bagasse pretreated with 5% (w/w) acetic acid at an accumulated solid concentration of 20% (w/v) during the 96-h fed-batch simultaneous saccharification and fermentation achieved a maximum ethanol concentration of 53.1 g/L and ethanol yield of 88.7%, compared to 25.7 g/L and 86.7% for the 96-h batch simultaneous saccharification and fermentation at a solid concentration of 10% (w/v), respectively. For comparison, the bagasse pretreated with 0.5% (w/w) sulfuric acid and water under the same fed-batch simultaneous saccharification and fermentation conditions produced maximum ethanol concentrations of 44.3 and 36.5 g/L, and ethanol yields of 77.6 and 69.7%, respectively.
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