Economic evaluation of the MIT process for manufacture of ethanol
Description
This report summarizes the results of an economic evaluation of the MIT process for the manufacture of ethanol from cellulosic residues. Conceptual process designs were developed for two cases, Case A which is based on the experimental data obtained to date, and Case B which hypothesizes the suppression of acid byproducts. Manufacturing costs, including profit, were estimated at $12.20/million Btu for Case A and $9.40/million Btu for Case B. These are equivalent to about $1.05 and $0.80/gal ethanol respectively. These economic estimates may be slightly on the low side since they do not consider feedstock storage nor working capital requirements. … continued below
Physical Description
32 pages
Creation Information
Jenkins, D. M. & Reddy, T. S. June 28, 1979.
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Battelle Memorial Institute. Columbus Laboratories.
Publisher Info: Battelle Columbus Labs., OH (USA)Place of Publication: Ohio
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Description
This report summarizes the results of an economic evaluation of the MIT process for the manufacture of ethanol from cellulosic residues. Conceptual process designs were developed for two cases, Case A which is based on the experimental data obtained to date, and Case B which hypothesizes the suppression of acid byproducts. Manufacturing costs, including profit, were estimated at $12.20/million Btu for Case A and $9.40/million Btu for Case B. These are equivalent to about $1.05 and $0.80/gal ethanol respectively. These economic estimates may be slightly on the low side since they do not consider feedstock storage nor working capital requirements. Nevertheless, the manufacturing costs for Case A appear to be comparable to those of the manufacture of ethanol from corn. The plant size used for this analysis was 1500 ton/day corn stover. This is considered to be a realistic size. The conceptual plants make about 27 million gal/yr ethanol in Case A and 41 million gal/yr in Case B. The MIT process appears to be one of the more promising programs being developed under contract for DOE. It is recommended that the process research be continued. Three areas of concern were identified which must be investigated before the process can be commercialized. First, a satisfactory means of storage of corn stover and other agricultural residues must be developed. Second, a method to sterilize corn stover must be developed or it must be demonstrated that the MIT process can run continuously for extended periods with stover that has been sterilized. Third, research must be done to demonstrate the recycle and reuse of process water.
Physical Description
32 pages
Notes
NTIS, PC A03/MF A01.
Subjects
Keywords
- Acetic Acid
- Agricultural Wastes
- Alcohols
- Bacteria
- Bioconversion
- Biosynthesis
- Carbohydrates
- Carboxylic Acids
- Cellulose
- Cereals
- Chemical Reactions
- Clostridium
- Clostridium Thermocellum
- Continuous Culture
- Cost
- Data
- Data Compilation
- Data Forms
- Decomposition
- Diagrams
- Economic Analysis
- Economics
- Enzymatic Hydrolysis
- Equipment
- Ethanol
- Fermentation
- Gramineae
- Grass
- Hydrogen Compounds
- Hydrolysis
- Hydroxy Acids
- Hydroxy Compounds
- Information
- Lactic Acid
- Liquid Wastes
- Lysis
- Maize
- Microorganisms
- Monocarboxylic Acids
- Numerical Data
- Organic Acids
- Organic Compounds
- Oxygen Compounds
- Plants
- Polysaccharides
- Recycling
- Saccharides
- Solid Wastes
- Solvolysis
- Sterilization
- Storage
- Synthesis
- Tables
- Waste Water
- Wastes
- Water 140504* -- Solar Energy Conversion-- Biomass Production & Conversion-- (-1989)
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- Report No.: DSE-3992-T1
- Grant Number: ET-78-X-01-3992
- Digital Object Identifier: https://doi.org/10.2172/5361444
- Office of Scientific & Technical Information Report Number: 5361444
- Archival Resource Key: ark:/67531/metadc1071723
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- June 28, 1979
Added to The UNT Digital Library
- Feb. 4, 2018, 10:51 a.m.
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- May 27, 2021, 4:05 p.m.
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Jenkins, D. M. & Reddy, T. S. Economic evaluation of the MIT process for manufacture of ethanol, report, June 28, 1979; Ohio. (https://digital.library.unt.edu/ark:/67531/metadc1071723/: accessed July 16, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.