The cost of ethanol production from lignocellulosic biomass -- A comparison of selected alternative processes. Final report

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The purpose of this report is to compare the cost of selected alternative processes for the conversion of lignocellulosic biomass to ethanol. In turn, this information will be used by the ARS/USDA to guide the management of research and development programs in biomass conversion. The report will identify where the cost leverages are for the selected alternatives and what performance parameters need to be achieved to improve the economics. The process alternatives considered here are not exhaustive, but are selected on the basis of having a reasonable potential in improving the economics of producing ethanol from biomass. When other alternatives ... continued below

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120 p.

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Grethlein, H.E. & Dill, T. April 30, 1993.

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Description

The purpose of this report is to compare the cost of selected alternative processes for the conversion of lignocellulosic biomass to ethanol. In turn, this information will be used by the ARS/USDA to guide the management of research and development programs in biomass conversion. The report will identify where the cost leverages are for the selected alternatives and what performance parameters need to be achieved to improve the economics. The process alternatives considered here are not exhaustive, but are selected on the basis of having a reasonable potential in improving the economics of producing ethanol from biomass. When other alternatives come under consideration, they should be evaluated by the same methodology used in this report to give fair comparisons of opportunities. A generic plant design is developed for an annual production of 25 million gallons of anhydrous ethanol using corn stover as the model substrate at $30/dry ton. Standard chemical engineering techniques are used to give first order estimates of the capital and operating costs. Following the format of the corn to ethanol plant, there are nine sections to the plant; feed preparation, pretreatment, hydrolysis, fermentation, distillation and dehydration, stillage evaporation, storage and denaturation, utilities, and enzyme production. There are three pretreatment alternatives considered: the AFEX process, the modified AFEX process (which is abbreviated as MAFEX), and the STAKETECH process. These all use enzymatic hydrolysis and so an enzyme production section is included in the plant. The STAKETECH is the only commercially available process among the alternative processes.

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120 p.

Notes

OSTI as DE96004074

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  • Other Information: PBD: 30 Apr 1993

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  • Other: DE96004074
  • Report No.: DOE/CE/15491--T2
  • Grant Number: FG01-90CE15491
  • DOI: 10.2172/171246 | External Link
  • Office of Scientific & Technical Information Report Number: 171246
  • Archival Resource Key: ark:/67531/metadc620950

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  • April 30, 1993

Added to The UNT Digital Library

  • June 16, 2015, 7:43 a.m.

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  • Dec. 7, 2015, 9:04 a.m.

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Grethlein, H.E. & Dill, T. The cost of ethanol production from lignocellulosic biomass -- A comparison of selected alternative processes. Final report, report, April 30, 1993; United States. (digital.library.unt.edu/ark:/67531/metadc620950/: accessed June 23, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.