Journal
BIORESOURCE TECHNOLOGY
Volume 206, Issue -, Pages 86-92Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2016.01.077
Keywords
Corn stalk; Acid pretreatment; Ethanol fermentation
Funding
- National Basic Research Program of China [2013CB733600]
- National Nature Science Foundation of China [21390202, 21476015]
- National High-Tech R&D Program of China [2014AA021903]
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In this study, the effects of different parts of corn stalk, including stem, leaf, flower, cob and husk on second generation ethanol production were evaluated. FTIR, XRD and SEM were performed to investigate the effect of dilute acid pretreatment. The bagasse obtained after pretreatment were further hydrolyzed by cellulase and used as the substrate for ethanol fermentation. As results, hemicelluloses fractions in different parts of corn stalk were dramatically removed and the solid fractions showed vivid compositions and crystallinities. Compared with other parts of corn stalk, the cob had higher sugar content and better enzymatic digestibility. The highest glucose yield of 94.2% and ethanol production of 24.0 g L-1 were achieved when the cob was used as feedstock, while the glucose yield and the ethanol production were only 86.0% and 17.1 g L-1 in the case of flower. (C) 2016 Elsevier Ltd. All rights reserved.
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