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Economic Analysis of Cellulosic Ethanol Production from Sugarcane Bagasse Using a Sequential Deacetylation, Hot Water and Disk-Refining Pretreatment

Journal Article · · Processes
DOI:https://doi.org/10.3390/pr7100642· OSTI ID:2375901

A new process for conversion of sugarcane bagasse to ethanol was analyzed for production costs and energy consumption using experimental results. The process includes a sequential three-stage deacetylation, hot water, and disk-refining pretreatment and a commercial glucose-xylose fermenting S. cerevisiae strain. The simultaneous saccharification and co-fermentation (SScF) step used was investigated at two solids loadings: 10% and 16% w/w. Additionally, a sensitivity analysis was conducted for the major operating parameters. The minimum ethanol selling price (MESP) varied between $4.91and $4.52/gal ethanol. The higher SScF solids loading (16%) reduced the total operating, utilities, and production costs by 9.5%, 15.6%, and 5.6%, respectively. Other important factors in determining selling price were costs for fermentation medium and enzymes (e.g., cellulases). Hence, these findings support operating at high solids and producing enzymes onsite as strategies to minimize MESP.

Research Organization:
Center for Advanced Bioenergy and Bioproducts Innovation (CABBI), Urbana, IL (United States); University of Illinois at Urbana-Champaign, IL (United States)
Sponsoring Organization:
USDOE; USDOE Office of Science (SC); USDOE Office of Science (SC), Biological and Environmental Research (BER)
Grant/Contract Number:
SC0018420
OSTI ID:
2375901
Alternate ID(s):
OSTI ID: 1803423
OSTI ID: 1991846
Journal Information:
Processes, Journal Name: Processes Journal Issue: 10 Vol. 7; ISSN PROCCO; ISSN 2227-9717
Publisher:
MDPI AGCopyright Statement
Country of Publication:
Switzerland
Language:
English

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