Preliminary Estimate of the Cost of Ethanol Production for SSF Technology

N. D. Hinman, D. J. Schell, J. Riley, P. W. Bergeron, P. J. Walter

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Abstract

The Solar Energy Research Institute (SERI) recently completed a detailed engineering and economic analysis of the simultaneous saccharification and fermentation (SSF) based wood-to-ethanol process. The reference-case design was based on a plant capacity of 1920 dry t/d and a wood cost of $42/dry t. For this case, the preliminary estimate of the production cost of the ethanol product is about $1.22/gal. The combined effects of optimizing SSF enzyme loading, increasing plant capacity to 10,000 dry t/d, and reducing wood cost to $34/dry t are to reduce the preliminary estimate of the production cost to about $0.95/gal. Other technological improvements may further reduce the production cost. Certain technical assumptions, inherent in the analysis, are being investigated further.

Original languageAmerican English
Pages (from-to)639-649
Number of pages11
JournalApplied Biochemistry and Biotechnology - Part A Enzyme Engineering and Biotechnology
Volume34-35
Issue number1
DOIs
StatePublished - 1992

NREL Publication Number

  • ACNR/JA-232-12360

Keywords

  • ethanol from biomass
  • Ethanol production costs
  • simultaneous saccharification and fermentation

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