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Title: Ethanol Production from Corn Fiber Separated after Liquefaction in the Dry Grind Process

Conversion of corn fiber to ethanol in the dry grind process can increase ethanol yields, improve coproduct quality and contribute to process sustainability. This work investigates the use of two physio-chemical pretreatments on corn fiber and effect of cellulase enzyme dosage to improve ethanol yields. Fiber separated after liquefaction of corn was pretreated using (I) hot water pretreatment (160 °C for 5, 10 or 20 min) and (II) wet disk milling and converted to ethanol. The conversion efficiencies of hot water pretreated fiber were higher than untreated fiber, with highest increase in conversion (10.4%) achieved for 5 min residence time at 160 °C. Disk milling was not effective in increasing conversion compared to other treatments. Furthermore, hydrolysis and fermentation of untreated fiber with excess cellulase enzymes resulted in 33.3% higher conversion compared to untreated fiber.
Authors:
 [1] ;  [1] ;  [1] ;  [1] ;  [1]
  1. Univ. of Illinois at Urbana-Champaign, Urbana, IL (United States)
Publication Date:
Grant/Contract Number:
SC0018420
Type:
Accepted Manuscript
Journal Name:
Energies (Basel)
Additional Journal Information:
Journal Name: Energies (Basel); Journal Volume: 11; Journal Issue: 11; Journal ID: ISSN 1996-1073
Publisher:
MDPI AG
Research Org:
Univ. of Illinois at Urbana-Champaign, Urbana, IL (United States). Center for Advanced Bioenergy and Bioproducts Innovation (CABBI)
Sponsoring Org:
USDOE Office of Science (SC), Biological and Environmental Research (BER) (SC-23)
Country of Publication:
United States
Language:
English
Subject:
09 BIOMASS FUELS; corn fiber; ethanol; dry grind; pretreatment; disk milling
OSTI Identifier:
1479663

Kurambhatti, Chinmay V., Kumar, Deepak, Rausch, Kent D., Tumbleson, Mike E., and Singh, Vijay. Ethanol Production from Corn Fiber Separated after Liquefaction in the Dry Grind Process. United States: N. p., Web. doi:10.3390/en11112921.
Kurambhatti, Chinmay V., Kumar, Deepak, Rausch, Kent D., Tumbleson, Mike E., & Singh, Vijay. Ethanol Production from Corn Fiber Separated after Liquefaction in the Dry Grind Process. United States. doi:10.3390/en11112921.
Kurambhatti, Chinmay V., Kumar, Deepak, Rausch, Kent D., Tumbleson, Mike E., and Singh, Vijay. 2018. "Ethanol Production from Corn Fiber Separated after Liquefaction in the Dry Grind Process". United States. doi:10.3390/en11112921. https://www.osti.gov/servlets/purl/1479663.
@article{osti_1479663,
title = {Ethanol Production from Corn Fiber Separated after Liquefaction in the Dry Grind Process},
author = {Kurambhatti, Chinmay V. and Kumar, Deepak and Rausch, Kent D. and Tumbleson, Mike E. and Singh, Vijay},
abstractNote = {Conversion of corn fiber to ethanol in the dry grind process can increase ethanol yields, improve coproduct quality and contribute to process sustainability. This work investigates the use of two physio-chemical pretreatments on corn fiber and effect of cellulase enzyme dosage to improve ethanol yields. Fiber separated after liquefaction of corn was pretreated using (I) hot water pretreatment (160 °C for 5, 10 or 20 min) and (II) wet disk milling and converted to ethanol. The conversion efficiencies of hot water pretreated fiber were higher than untreated fiber, with highest increase in conversion (10.4%) achieved for 5 min residence time at 160 °C. Disk milling was not effective in increasing conversion compared to other treatments. Furthermore, hydrolysis and fermentation of untreated fiber with excess cellulase enzymes resulted in 33.3% higher conversion compared to untreated fiber.},
doi = {10.3390/en11112921},
journal = {Energies (Basel)},
number = 11,
volume = 11,
place = {United States},
year = {2018},
month = {10}
}

Works referenced in this record:

Industrial Scale-Up of pH-Controlled Liquid Hot Water Pretreatment of Corn Fiber for Fuel Ethanol Production
journal, January 2005
  • Mosier, Nathan S.; Hendrickson, Richard; Brewer, Mark
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Inhibition of cellulases by phenols
journal, March 2010

Enzymatic Hydrolysis of Distiller's Dry Grain and Solubles (DDGS) Using Ammonia Fiber Expansion Pretreatment
journal, November 2006
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