Steam explosion of mixed hardwood chips as a biomass pretreatment

Journal Article · Wed Jun 01 00:00:00 EDT 1983 · Ind. Eng. Chem., Prod. Res. Dev.; (United States)

DOI:https://doi.org/10.1021/i300010a034· OSTI ID:5249340

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

Mixed southern hardwood chips were pretreated by steam explosion. Reaction temperatures ranged from 167 to 235 degrees C, with reaction times of 0.5, 1.0, and 2.0 min. The highest reaction temperatures degraded up to two-thirds of the hemicelluloses, with the remainder soluble in hot water. The cellulose content decreased only slightly at the higher reaction temperatures. The steam-explosion pretreatment did not increase the rate of acid hydrolysis of the cellulose. The apparent lignin content increased as teh steam-explosion temperature increased. The lignin was partially extractable by a hot alkaline solution. No differences were observed with the addition of NaOH catalyst. Scanning electron microscopy showed that wood chips exploded under mild conditions were only partially defibrated, while severe conditions shredded the fibers into many individual fragments. (Refs. 26).

• Research Organization: Mississippi Forest Products Utilization Lab., Mississippi State Univ., Mississippi State, MS 39762
• OSTI ID: 5249340
• Journal Information: Ind. Eng. Chem., Prod. Res. Dev.; (United States), Vol. 22:2
• Country of Publication: United States
• Language: English

Related Subjects

09 BIOMASS FUELS
WOOD
HEAT TREATMENTS
WOOD WASTES
ALKALINE HYDROLYSIS
CELLULOSE
DECOMPOSITION
HEMICELLULOSE
LIGNIN
STEAM
CARBOHYDRATES
CHEMICAL REACTIONS
HYDROLYSIS
LYSIS
ORGANIC COMPOUNDS
POLYSACCHARIDES
SACCHARIDES
SOLID WASTES
SOLVOLYSIS
WASTES
140504* - Solar Energy Conversion- Biomass Production & Conversion- (-1989)