Accounting for all sugars produced during integrated production of ethanol from lignocellulosic biomass
Abstract
This study explored integrated conversion of corn stover to ethanol and highlights techniques for accurate yield calculations. Acid pretreated corn stover (PCS) produced in a pilot-scale reactor was enzymatically hydrolyzed and the resulting sugars were fermented to ethanol by the glucose–xylose fermenting bacteria, Zymomonas mobilis 8b. The calculations account for high solids operation and oligomeric sugars produced during pretreatment, enzymatic hydrolysis, and fermentation, which, if not accounted for, leads to overestimating ethanol yields. The calculations are illustrated for enzymatic hydrolysis and fermentation of PCS at 17.5% and 20.0% total solids achieving 80.1% and 77.9% conversion of cellulose and xylan to ethanol and ethanol titers of 63 g/L and 69 g/L, respectively. In the future, these techniques, including the TEA results, will be applied to fully integrated pilot-scale runs.
- Authors:
-
- National Renewable Energy Lab. (NREL), Golden, CO (United States). National Bioenergy Center
- P2 Science, Woodbridge, CT (United States)
- Publication Date:
- Research Org.:
- National Renewable Energy Laboratory (NREL), Golden, CO (United States)
- Sponsoring Org.:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Sustainable Transportation Office. Bioenergy Technologies Office (BETO)
- OSTI Identifier:
- 1237439
- Alternate Identifier(s):
- OSTI ID: 1358840
- Report Number(s):
- NREL/JA-5100-65494
Journal ID: ISSN 0960-8524
- Grant/Contract Number:
- AC36-08GO28308
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Bioresource Technology
- Additional Journal Information:
- Journal Volume: 205; Journal Issue: C; Journal ID: ISSN 0960-8524
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 09 BIOMASS FUELS; 59 BASIC BIOLOGICAL SCIENCES; pretreatment; enzymatic hydrolysis; fermentation; ethanol; corn stover; yields; mass balance
Citation Formats
Schell, Daniel J., Dowe, Nancy, Chapeaux, Alexandre, Nelson, Robert S., and Jennings, Edward W. Accounting for all sugars produced during integrated production of ethanol from lignocellulosic biomass. United States: N. p., 2016.
Web. doi:10.1016/j.biortech.2016.01.024.
Schell, Daniel J., Dowe, Nancy, Chapeaux, Alexandre, Nelson, Robert S., & Jennings, Edward W. Accounting for all sugars produced during integrated production of ethanol from lignocellulosic biomass. United States. https://doi.org/10.1016/j.biortech.2016.01.024
Schell, Daniel J., Dowe, Nancy, Chapeaux, Alexandre, Nelson, Robert S., and Jennings, Edward W. Tue .
"Accounting for all sugars produced during integrated production of ethanol from lignocellulosic biomass". United States. https://doi.org/10.1016/j.biortech.2016.01.024. https://www.osti.gov/servlets/purl/1237439.
@article{osti_1237439,
title = {Accounting for all sugars produced during integrated production of ethanol from lignocellulosic biomass},
author = {Schell, Daniel J. and Dowe, Nancy and Chapeaux, Alexandre and Nelson, Robert S. and Jennings, Edward W.},
abstractNote = {This study explored integrated conversion of corn stover to ethanol and highlights techniques for accurate yield calculations. Acid pretreated corn stover (PCS) produced in a pilot-scale reactor was enzymatically hydrolyzed and the resulting sugars were fermented to ethanol by the glucose–xylose fermenting bacteria, Zymomonas mobilis 8b. The calculations account for high solids operation and oligomeric sugars produced during pretreatment, enzymatic hydrolysis, and fermentation, which, if not accounted for, leads to overestimating ethanol yields. The calculations are illustrated for enzymatic hydrolysis and fermentation of PCS at 17.5% and 20.0% total solids achieving 80.1% and 77.9% conversion of cellulose and xylan to ethanol and ethanol titers of 63 g/L and 69 g/L, respectively. In the future, these techniques, including the TEA results, will be applied to fully integrated pilot-scale runs.},
doi = {10.1016/j.biortech.2016.01.024},
journal = {Bioresource Technology},
number = C,
volume = 205,
place = {United States},
year = {Tue Jan 19 00:00:00 EST 2016},
month = {Tue Jan 19 00:00:00 EST 2016}
}
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