Increasing ethanol yield through fiber conversion in corn dry grind process

Kurambhatti, Chinmay V.; Kumar, Deepak; Rausch, Kent D.; Tumbleson, M. E.; Singh, Vijay

doi:10.1016/j.biortech.2018.09.120

Title: Increasing ethanol yield through fiber conversion in corn dry grind process

Journal Article · 25 September 2018 · Bioresource Technology

DOI: https://doi.org/10.1016/j.biortech.2018.09.120 · OSTI ID:1991820

Kurambhatti, Chinmay V. ^[1]; Kumar, Deepak ^[1]; Rausch, Kent D. ^[1]; Tumbleson, M. E. ^[1]; Singh, Vijay ^[1]

University of Illinois at Urbana-Champaign, IL (United States)

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.

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Research Organization:: Center for Advanced Bioenergy and Bioproducts Innovation (CABBI), Urbana, IL (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Biological and Environmental Research (BER)

Grant/Contract Number:: SC0018420

OSTI ID:: 1991820

Alternate ID(s):: OSTI ID: 1478367

Journal Information:: Bioresource Technology, Vol. 270; ISSN 0960-8524

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 15 works

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