Development of geothermally assisted process for production of liquid fuels and chemicals from wheat straw
The effects of variations in autohydrolysis conditions on the production of fermentable sugars from wheat straw are investigated. Both the direct production of sugar from the autohydrolysis of hemicellulose and the subsequent yield from the enzymatic hydrolysis of cellulose are considered. The principal parameters studied were time, temperature, and water/fiber weight ratio; however, the effects of adding minor amounts of phenol and aluminum sulfate to the autohydrolysis charge were also investigated. A brief study was made of the effects of two major parameters, substrate concentration and enzyme/substrate ratio, on the sugar yield from enzymatic hydrolysis of optimally pretreated straw. The efficiency with which these sugars could be fermented to ethanol was studied. In most cases experiments were carried out using distilled water; however, the effects of direct use of geothermal water were determined for each of the major steps in the process. An appendix to the body of the report describes the results of a preliminary economic evaluation of a plant designed to produce 25 x 10/sup 6/ gallons of ethanol per year from wheat straw using the best process conditions determined in the above work. Also appended are the results from a preliminary investigation of the applicability of autohydrolysis technology to the production of fermentable sugars from corn stover.
- Research Organization:
- Colorado State Univ., Fort Collins (USA). Dept. of Agricultural and Chemical Engineering
- DOE Contract Number:
- AS07-79ID12051
- OSTI ID:
- 6340189
- Report Number(s):
- DOE/ID/12051-T1; ON: DE81023338
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
09 BIOMASS FUELS
AGRICULTURAL WASTES
HYDROLYSIS
ETHANOL PLANTS
GEOTHERMAL PROCESS HEAT
WHEAT
ALUMINIUM SULFATES
CELLULOSE
ETHANOL
FERMENTATION
PHENOL
SACCHARIDES
THERMAL WATERS
ALCOHOLS
ALUMINIUM COMPOUNDS
AROMATICS
BIOCONVERSION
CARBOHYDRATES
CEREALS
CHEMICAL REACTIONS
DECOMPOSITION
ENERGY
GRAMINEAE
GRASS
HEAT
HYDROXY COMPOUNDS
INDUSTRIAL PLANTS
LYSIS
ORGANIC COMPOUNDS
ORGANIC WASTES
OXYGEN COMPOUNDS
PHENOLS
PLANTS
POLYSACCHARIDES
PROCESS HEAT
SOLVOLYSIS
SULFATES
SULFUR COMPOUNDS
WASTES
Geothermal Legacy
151000* - Geothermal Energy- Direct Energy Utilization
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