Journal
FUEL
Volume 107, Issue -, Pages 823-827Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.fuel.2013.02.002
Keywords
Bioethanol; Corn stover; Enzymatic hydrolysis; Saccharomyces cerevisiae; Enzymatic hydrolysis residue
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Funding
- International Advanced Forestry Technology Introduction Project Funding [2012-418]
- National Natural Science Foundation of China [31070523]
- Doctorate Fellowship Foundation of Nanjing Forestry University
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An integrated process of enzymatic hydrolysis and fermentation was investigated to enhance ethanol production from steam-exploded corn stover. The process included enzymatic hydrolysis at a low substrate loading, fermentation of concentrated supernatant and solid state fermentation of enzymatic hydrolysis residue. The results suggested that enzymatic hydrolysis at a low substrate loading caused a high hydrolysis efficiency; Fermentation of concentrated supernatant provided a high ethanol concentration of 92.33 g/L, which helped to decrease the cost of subsequent ethanol distillation; Simultaneous saccharification and fermentation of enzymatic hydrolysis residue was carried out, in order to enhance ethanol production as much as possible. (c) 2013 Elsevier Ltd. All rights reserved.
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