Prehydrolysis achieves higher organosolv delignification

Journal Article · Mon Feb 01 04:00:00 EST 1982 · Tappi; (United States)

OSTI ID:5166099

April, G C; Bharoocha, R; Sheng, J; Hansen, S

Presented is the investigation of water pretreatment of southern yellow pine meal and its effects on subsequent organsolv treatment of the pulp with 50:50 n-butanol:water. Lignin removal is enhanced with no additional loss in residual pulp. Values for lignin conversion of 31% (at 180 degrees C) and 34% (at 200 degrees C) without pretreatment are increased to 33% (at 180 degrees C) and 37% (at 200 degrees C) when a water pretreatment is used. Holdup times were varied from 0 to 3 hr. Kinetic analysis of the data shows that weight loss due to water pretreatment of the wood is initially controlled by hemicellulose hydrolysis with a shift to beta-cellulose hydrolysis in later periods of the treatment. (Refs. 11).

• Research Organization: Univ. Alabama, Box G, Univ., Alabama 3548
• OSTI ID: 5166099
• Journal Information: Tappi; (United States), Journal Name: Tappi; (United States) Vol. 65:2; ISSN TAPPA
• Country of Publication: United States
• Language: English

Related Subjects

09 BIOMASS FUELS
140504* -- Solar Energy Conversion-- Biomass Production & Conversion-- (-1989)
ALCOHOLS
BUTANOLS
CARBOHYDRATES
CELLULOSE
CHEMICAL REACTIONS
CONIFERS
DECOMPOSITION
DELIGNIFICATION
HEMICELLULOSE
HYDROLYSIS
HYDROXY COMPOUNDS
KINETICS
LIGNIN
LYSIS
ORGANIC COMPOUNDS
ORGANIC SOLVENTS
PINES
PLANTS
POLYSACCHARIDES
SACCHARIDES
SOLVENTS
SOLVOLYSIS
TREES
WATER TREATMENT
WOOD