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Title: Techno-Economic Evaluation of Cellulosic Ethanol Production Based on Pilot Biorefinery Data: a Case Study of Sweet Sorghum Bagasse Processed via L+SScF

Journal Article · · BioEnergy Research
 [1];  [2];  [3];  [4]; ORCiD logo [3]
  1. Univ. of Florida, Gainesville, FL (United States); Univ. of Florida, Perry, FL (United States); Sanquin Plasma Products, Amsterdam (The Netherlands)
  2. Univ. of Florida, Gainesville, FL (United States); Univ. of Florida, Perry, FL (United States); Cargill, Eddyville, IA (United States)
  3. Univ. of Florida, Gainesville, FL (United States)
  4. Univ. of Florida, Gainesville, FL (United States); Univ. of Florida, Perry, FL (United States)

Replacing fossil fuels with renewable fuels derived from lignocellulosic biomass can contribute to the mitigation of global warming and the economic development of rural communities. This will require lignocellulosic biofuels to become price competitive with fossil fuels. Techno-economic analyses can provide insights into which parts of the biofuel production process need to be optimized to reduce cost or energy use. Here, we used data obtained from a pilot biorefinery to model a commercial-scale biorefinery that processes lignocellulosic biomass to ethanol, with a focus on the minimum ethanol selling price (MESP). The process utilizes a phosphoric acid-catalyzed pre-treatment of sweet sorghum bagasse followed by liquefaction and simultaneous saccharification and co-fermentation (L+SScF) of hexose and pentose sugars by an engineered Escherichia coli strain. After validating a techno-economic model developed with the SuperPro Designer software for the conversion of sugarcane bagasse to ethanol by comparing it to a published Aspen Plus model, six different scenarios were modeled for sweet sorghum bagasse Under the most optimistic scenario, the ethanol can be produced at a cost close to the energy-equivalent price of gasoline. Aside from an increase in the price of gasoline, the gap between ethanol and gasoline prices could also be bridged by either a decrease in the cost of cellulolytic enzymes or development of value-added products from lignin.

Research Organization:
Univ. of Florida, Gainesville, FL (United States)
Sponsoring Organization:
USDA; National Institute of Food and Agriculture (NIFA); USDOE Office of Energy Efficiency and Renewable Energy (EERE), Office of Sustainable Transportation. Bioenergy Technologies Office (BETO); USDOE Office of International Affairs (IA); Florida Department of Agriculture and Consumer Sciences
DOE Contract Number:
PI0000031; 2011-10006-30358; 020650
OSTI ID:
1768850
Journal Information:
BioEnergy Research, Vol. 11, Issue 2; ISSN 1939-1234
Publisher:
Springer
Country of Publication:
United States
Language:
English

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