Rapid steam hydrolysis/extraction of mixed hardwoods as a biomass pretreatment

Journal Article · Sun Jan 01 00:00:00 EST 1984 · J. Wood Chem. Technol.; (United States)

DOI:https://doi.org/10.1080/02773818408062286· OSTI ID:5574794

Biermann, C J; Schultz, T P; McGinnis, G D

Rapid steam hydrolysis of wood chips with continuous condensate/product removal was investigated as a biomass pretreatment similar to steam explosion. Steam was introduced at the top of a pressurized reactor containing mixed southern (USA) hardwood chips while condensate and particle products were removed at the bottom of the reactor. A reaction time of one minute was employed for isothermal steaming runs from 160 to 280 degrees C. Fractionation of wood occurred at temperature above 200 degrees C as hemicellulose and lignin began to appear in the steam condensate fraction, leaving a cellulose-rich fraction in the steaming reactor. At high temperature cellulose was not degraded as much as it was in steam explosion at the same temperature, presumably because of the removal of acetic acid as it is formed. Lignin extracted from the solid residue appeared particularly reactive as determined by nitrobenzene oxidation and pyrolysis/gas chromatography. Lignin collected in the steam condensate was also very reactive, presumably because of its rapid cooling after being removed from the reactor. 23 references.

• Research Organization: Mississippi State Univ., MS
• OSTI ID: 5574794
• Journal Information: J. Wood Chem. Technol.; (United States), Vol. 4:1
• Country of Publication: United States
• Language: English

Related Subjects

09 BIOMASS FUELS
WOOD WASTES
AUTOHYDROLYSIS
CELLULOSE
HEMICELLULOSE
HIGH TEMPERATURE
LIGNIN
STEAM
CARBOHYDRATES
CHEMICAL REACTIONS
DECOMPOSITION
HEAT TREATMENTS
HYDROLYSIS
LYSIS
ORGANIC COMPOUNDS
POLYSACCHARIDES
SACCHARIDES
SOLID WASTES
SOLVOLYSIS
WASTES
090222* - Alcohol Fuels- Preparation from Wastes or Biomass- (1976-1989)
140504 - Solar Energy Conversion- Biomass Production & Conversion- (-1989)