Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7074436 | Bioresource Technology | 2015 | 7 Pages |
Abstract
In this study, for the first time the effects of glycerol on enzymatic hydrolysis and ethanol fermentation were investigated. Enzymatic hydrolysis was inhibited slightly with 2.0Â wt% glycerol, leading to reduction in glucan digestibility from 84.9% without glycerol to 82.9% (72Â h). With 5.0Â wt% and 10.0Â wt% glycerol, glucan digestibility was reduced by 4.5% and 11.0%, respectively. However, glycerol did not irreversibly inhibit cellulase enzymes. Ethanol fermentation was not affected by glycerol up to 5.0Â wt%, but was inhibited slightly at 10.0Â wt% glycerol, resulting in reduction in ethanol yield from 86.0% in the absence of glycerol to 83.7% (20Â h). Based on the results of laboratory and pilot-scale experiments, it was estimated that 0.142Â kg ethanol can be produced from 1.0Â kg dry bagasse (a glucan content of 38.0%) after pretreatment with acidified glycerol solution.
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Authors
Zhanying Zhang, Heng H. Wong, Peter L. Albertson, Mark D. Harrison, William O.S. Doherty, Ian M. O'Hara,