Continuous steam hydrolysis of tulip poplar
To produce ethanol from hardwood it is desirable to fractionate the hardwood in order to produce a relatively pure cellulosic pulp for dilute acid hydrolysis. An experimental investigation of continuous steam hydrolysis of tulip poplar wood chips indicates that over 90% of the lignin present can be extracted by 0.1N sodium hydroxide, resulting in a cellulose pulp containing over 90% hexosan. The study was performed using a Stake Technology, Ltd., continuous digester rated at one oven dry ton per hour of wood chips. The yields of hexosans, hexoses, xylan, xylose, lignin, furfural, acetic acid and methanol were determined as a function of residence time and steam pressure in the digester. The information provides a basis for establishing a material and energy balance for a hardwood to ethanol plant.
- Research Organization:
- Georgia Inst. of Technology, Atlanta, GA
- OSTI ID:
- 5516010
- Report Number(s):
- CONF-820814-
- Journal Information:
- Proc., Intersoc. Energy Convers. Eng. Conf.; (United States), Vol. 1; Conference: 17. Intersociety Energy Conversion Engineering conference, Los Angeles, CA, USA, 8 Aug 1982
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
POLICY AND ECONOMY
BIOMASS
WOOD
ACID HYDROLYSIS
ACETIC ACID
BIOCONVERSION
CELLULOSE
ENERGY BALANCE
ETHANOL
FRACTIONATION
FURFURAL
HEXOSES
LIGNIN
MATERIALS TESTING
METHANOL
POPLARS
PRODUCTION
SLURRIES
SODIUM HYDROXIDES
SOLVENT EXTRACTION
STEAM
XYLANS
XYLOSE
ALCOHOLS
ALDEHYDES
ALKALI METAL COMPOUNDS
CARBOHYDRATES
CARBOXYLIC ACIDS
CHEMICAL REACTIONS
DECOMPOSITION
DISPERSIONS
ENERGY SOURCES
EXTRACTION
FURANS
HEMICELLULOSE
HETEROCYCLIC COMPOUNDS
HYDROGEN COMPOUNDS
HYDROLYSIS
HYDROXIDES
HYDROXY COMPOUNDS
LYSIS
MIXTURES
MONOCARBOXYLIC ACIDS
MONOSACCHARIDES
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
OXYGEN COMPOUNDS
PENTOSES
PLANTS
POLYSACCHARIDES
RENEWABLE ENERGY SOURCES
SACCHARIDES
SEPARATION PROCESSES
SODIUM COMPOUNDS
SOLVOLYSIS
SUSPENSIONS
TESTING
TREES
299003* - Energy Planning & Policy- Unconventional Sources & Power Generation- Other- (-1989)