Increasing ethanol yield through fiber conversion in corn dry grind process
Abstract
Conversion of corn fiber to ethanol in the dry grind process could increase ethanol yields, reduce downstream processing costs and improve overall process profitability. In this work, we investigate the in-situ conversion of corn fiber into ethanol (cellulase addition during simultaneous saccharification and fermentation) during dry grind process. Addition of 30 FPU/g fiber cellulase resulted in 4.6% increase in ethanol yield compared to the conventional process. Use of excess cellulase (120 FPU/g fiber) resulted in incomplete fermentation and lower ethanol yield compared to the conventional process. Lastly, multiple factors including high concentrations of ethanol and phenolic compounds were responsible for yeast stress and incomplete fermentation in excess cellulase experiments.
- Authors:
-
- University of Illinois at Urbana-Champaign, IL (United States)
- Publication Date:
- Research Org.:
- Center for Advanced Bioenergy and Bioproducts Innovation (CABBI), Urbana, IL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Biological and Environmental Research (BER)
- OSTI Identifier:
- 1991820
- Alternate Identifier(s):
- OSTI ID: 1478367
- Grant/Contract Number:
- SC0018420
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Bioresource Technology
- Additional Journal Information:
- Journal Volume: 270; Journal ID: ISSN 0960-8524
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 09 BIOMASS FUELS; Corn fiber; Cellulosic ethanol; Dry grind; Cellulase; Phenolic compounds
Citation Formats
Kurambhatti, Chinmay V., Kumar, Deepak, Rausch, Kent D., Tumbleson, M. E., and Singh, Vijay. Increasing ethanol yield through fiber conversion in corn dry grind process. United States: N. p., 2018.
Web. doi:10.1016/j.biortech.2018.09.120.
Kurambhatti, Chinmay V., Kumar, Deepak, Rausch, Kent D., Tumbleson, M. E., & Singh, Vijay. Increasing ethanol yield through fiber conversion in corn dry grind process. United States. https://doi.org/10.1016/j.biortech.2018.09.120
Kurambhatti, Chinmay V., Kumar, Deepak, Rausch, Kent D., Tumbleson, M. E., and Singh, Vijay. Tue .
"Increasing ethanol yield through fiber conversion in corn dry grind process". United States. https://doi.org/10.1016/j.biortech.2018.09.120. https://www.osti.gov/servlets/purl/1991820.
@article{osti_1991820,
title = {Increasing ethanol yield through fiber conversion in corn dry grind process},
author = {Kurambhatti, Chinmay V. and Kumar, Deepak and Rausch, Kent D. and Tumbleson, M. E. and Singh, Vijay},
abstractNote = {Conversion of corn fiber to ethanol in the dry grind process could increase ethanol yields, reduce downstream processing costs and improve overall process profitability. In this work, we investigate the in-situ conversion of corn fiber into ethanol (cellulase addition during simultaneous saccharification and fermentation) during dry grind process. Addition of 30 FPU/g fiber cellulase resulted in 4.6% increase in ethanol yield compared to the conventional process. Use of excess cellulase (120 FPU/g fiber) resulted in incomplete fermentation and lower ethanol yield compared to the conventional process. Lastly, multiple factors including high concentrations of ethanol and phenolic compounds were responsible for yeast stress and incomplete fermentation in excess cellulase experiments.},
doi = {10.1016/j.biortech.2018.09.120},
journal = {Bioresource Technology},
number = ,
volume = 270,
place = {United States},
year = {Tue Sep 25 00:00:00 EDT 2018},
month = {Tue Sep 25 00:00:00 EDT 2018}
}
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Cited by: 15 works
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Figures / Tables:
Table 1: Effect of 30 FPU/g fiber on cellulase addition in conventional dry grind process.
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Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.