Investigations for the production of a fermentable feedstock from bagasse using the Purdue cellulose hydrolysis (solvent) system
The major objective is to isolate the cellulosic bundles imbedded in the lignin, and thereafter hydrolyze the isolated cellulosic bundles of alpha and hemi-celluloses into sugars of mono-hexose and pentose, respectively, without significant destruction of these sugars. Two approaches for obtaining the stated goals may be followed: (1) dissolve the lignin without changing the cellulosic fraction. Separate the dissolved lignin from the fibrous bundles and hydrolyze the residual fiber into mono-sugars; and (2) dissolve the cellulosic fraction without dissolving the lignin. Hydrolyze the dissolved cellulosic fraction without interference of lignin into mono-sugars. Remove the non-hydrolyzed lignin which is insoluble in aqueous acid solutions, and thus separate the lignin fraction from the aqueous solution containing the mono-sugars from hydrolyzing. Research was conducted on approach No. 1 using the hydrotropic solution of sodium benzene sulfonate for dissolving lignin from the matrix. Removal of lignin was carried out with the use of a high-pressure, stainless steel Parr vessel. To accomplish the second task, sulfur trioxide was employed as a catalyst to hydrolyze cellulose into liquid mono-sugars. SO/sub 3/ when introduced into an air stream at ambient temperature will react with fiber particles and coat them at random with a thin layer of formed H/sub 2/SO/sub 4/. Abrading of treated fiber can take place in an extruding screw press. The degree of abrading results in a plasticized end product. Hydrolysis of the abraded fibrous material can take place without further addition of acid catalyst in the presence of steam. 5 figures, 14 tables. (DMC)
- Research Organization:
- Florida Univ., Gainesville (USA). Dept. of Agronomy
- DOE Contract Number:
- FG44-80R410169
- OSTI ID:
- 5754123
- Report Number(s):
- DOE/R4/10169-T1; ON: DE84000752
- Resource Relation:
- Other Information: Portions are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
Similar Records
Promising ethanologens for xylose fermentation
Rapid and near-complete dissolution of wood lignin at ≤80°C by a recyclable acid hydrotrope
Related Subjects
CELLULOSE
ACID HYDROLYSIS
DISSOLUTION
LIGNIN
BAGASSE
CATALYTIC EFFECTS
EXTRUSION
GLUCOSE
HEXOSES
PENTOSES
PRESSES
SEPARATION PROCESSES
SULFONATES
SULFUR TRIOXIDE
SYNTHESIS
AGRICULTURAL WASTES
ALDEHYDES
CARBOHYDRATES
CHALCOGENIDES
CHEMICAL REACTIONS
DECOMPOSITION
FABRICATION
HYDROLYSIS
LYSIS
MATERIALS WORKING
MONOSACCHARIDES
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
ORGANIC WASTES
OXIDES
OXYGEN COMPOUNDS
POLYSACCHARIDES
SACCHARIDES
SOLVOLYSIS
SULFUR COMPOUNDS
SULFUR OXIDES
WASTES
090122* - Hydrocarbon Fuels- Preparation from Wastes or Biomass- (1976-1989)
140504 - Solar Energy Conversion- Biomass Production & Conversion- (-1989)