Strong acid hydrolysis of cellulosic and hemicellulosic material

Chemistry: molecular biology and microbiology – Micro-organism – tissue cell culture or enzyme using process... – Preparing compound containing saccharide radical

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127 1, 127 36, 127 37, 127 462, 127 463, 210665, 210673, 536 111, 536124, 536127, C13K 102, C12P 1912, C12P 1902, B01J 300

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055977146

ABSTRACT:
A economically viable method for producing sugars using concentrated acid hydrolysis of biomass containing cellulose and hemicellulose is disclosed. The cellulose and hemicellulose in the biomass is first decrystallized and then hydrolyzed to produce a hydrolysate containing both sugars and acid. Silica and silicates present in the biomass can then be removed for further processing. The remaining solids are then subjected to a second decrystallization if necessary and a second hydrolyzation to optimize the sugar yields.

REFERENCES:
patent: 4242455 (1980-12-01), Muller et al.
patent: 4266981 (1981-05-01), Tsao et al.
patent: 4427584 (1984-01-01), Legrand
patent: 4556430 (1985-12-01), Converse et al.
patent: 4612286 (1986-09-01), Sherman et al.
patent: 4645541 (1987-02-01), DeLong
patent: 4668340 (1987-05-01), Sherman
patent: 4742814 (1988-05-01), Sinner et al.
patent: 4880473 (1989-11-01), Scott et al.
patent: 5084104 (1992-01-01), Heikkila et al.
patent: 5188673 (1993-02-01), Clausen et al.
"The Butyl Alcohol-Isopropyl Alcohol Fermentation" Osburn, et al., Journal of Biol. Chemistry. 121:685-695 (1937).
"Studies on Anerobic Bacteria" Sjolander, Journal Bacteriol, 34:419-428 (1937).
"Kinetics of Wood Saccharification: Hydrolysis of Cellulose and Decomposition of Sugars in Dilute Acid at High Temperature".
Saeman, Industrial and Engineering Chemistry, 37: No. 1, pp. 43-52 (Jan. 1945).
"Factors affecting losses of sugars during acid hydrolysis of polysaccharides" LaBerge, et al., LABP, 19: No. 11, pp. 1121-1123 (Nov. 1970).
"Kinetics of the Acid Hydrolysis of Cellulose Found in Paper Refuse" Fagan, et al., Environmental Science & Technology, 5: No. 6, pp. 545-547 (Jun. 1971).
"Alcoholic Beverages" Rose, Economic Microbiology, 1:21-41 (1977).
"Comparison of the Economics of Acid and Enzymatic Hydrolysis of Newsprint" Grethlein, Biotechnology and Bioengineering, 20:503-525 (1978).
"Key Factors in the Hydrolysis of Cellulose" Saeman, Symposium on Biomass as a Non-Fossil Fuel Source, Presented Apr. 1-6, 1979, pp. 472-480.
"Rapid Ethanol Fermentation of Cellulose Hydrolysate" Ghose, et al., Biotechnology and Bioengineering, 21:1387-1400 (1979).
"Kinetics of Alcohol Fermentation at High Yeast Levels" (from Communications to the Editor) Rosario, et al., Biotechnology and Bioengineering, 21:1477-1482 (1979).
"Cellulose Degradation--A Common Link" Dunlap, et al., Utilization and Recycle of Agricultural Wastes and Residues, Chapter 2, pp. 19-65 (1980).
"The Production of Alcohol Fuels via Acid Hydrolysis Extrusion Technology" Noon, et al., Publication of Kansas Energy Office & Ozarks Commission, Revised May 1982.
"Characterization of Cellobiose Fermentations of Ethanol by Yeasts" Freer, et al., Biotechnology and Bioengineering, 25:541-557 (1983).
"Simultaneous Saccharification and Fermentation of Cellulose: Effect of Ethanol on Enzymatic Saccharification of Cellulose" Ooshima, et al., Biotechnology and Bioengineering, 27:389-397 (1985).
"Integrated Fuel Alcohol Production Systems, Phase III" Barrier, et al., Experimental Facility Testing Report for Jan. 15, 1984--Jan. 15, 1985.
"Integrated Fuel Alcohol Production Systems, Phase III" Barrier, et al., Experimental Facility Testing Report, Feb. 1985.
"Acid Hydrolysis Experimental Facility Results with Corn Stover" Barrier, et al., Jun. 23-26, 1985.
"Integrated Fuel Alhohol Production Systems, Phase III" Barrier, et al., Experimental Facility Testing Report for Jan. 15, 1985--Jan. 15, 1986.
"Integrated Production of Ethanol and Coproducts from Agricultural Biomass" Barrier, et al., Tennessee Valley Authority Biomass Program, (Apr. 1986).
"Silicon-based Materials from Rice Husk" Karera, et al., Journal of Scientific & Industrial Research, 45:441-448 (Oct. 1986).
"Process Considerations for Scale-up of Liquid Chromatography and Electrophoresis" Rudge, et al., Separation, Recovery, and Purification in Biotechnology, pp. 122-152 (1986).
"Study of transformations of plant polysaccharides in the presence of acid catalysts" Rovenskii, et al., Chemical Abstracts, 109:104, cite 232958r (Dec. 19, 1988).
"Component composition and balance of hydrolysis products in carrying out cooking operations with the use of part of the hexose hydrolyzate on raw material loading" Popovtsev, et al., Chemical Abstracts, vol. 116, cite 8091q (Jan. 6, 1992).
"Application of Continuous Substrate Feeding to the ABE Fermentation: Relief of Product Inhibition Using Extraction, Perstraction, Stripping, and Pervaporation" Qureshi, et al., Biotechnol. Prog., 8: No. 5, pp. 382-390 (1992).

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