Estudo da utilizacao da biomassa florestal como fonte de produtos quimicos e energia atraves de processos quimicos e biotechnologicos (Utilization of forest biomass for chemicals and energy by chemical and biotechnological processes). Master's thesis

Technical Report · Sat Apr 01 00:00:00 EST 1989

OSTI ID:5495096

de Miranda, I M.S.S.

The chemical composition and the non-structural carbohydrate composition were determined for 1-year-old Eucalyptus globulus Labill trees, grown in an experimental plantation with different nutrient and water supplies (C-trees, where no treatment was made and IL-trees, which received a nutrient supply and irrigation). Leaf carbohydrates were determined for the same conditions. Pulping experiments were made using kraft cooks of eucalyptus wood. The results of the pretreatments are complemented with scanning electron microscopy observations. Average wood composition was: ash 1.6%, total extractives 5.2%, Klason lignin 21.0%, soluble lignin 3.1% (% of o.d. weight). The results did not show statistical significant differences between the two growth conditions. The average wood carbohydrate composition was: glucose 2.7%, frutose 4.1% sucrose 1.3% and starch 0.5%. The average carbohydrate composition of leaves was: glucose 1.0%, frutose 1.7%, sucrose 0.1% and starch 4.1%. The average yield for the kraft wood delinification was 49%. The saccharification of pretreated eucalyptus chips with a steam-explosion pretreatment was: For H2SO4 impregnation 26.6% and for H2O impregnation 44.2%.

• Research Organization: Universidade Tecnica, Lisbon (Portugal). Inst. Superior Tecnico
• OSTI ID: 5495096
• Report Number(s): PB-91-208827/XAB
• Resource Relation: Other Information: Text in Portuguese; summary in English
• Country of Publication: United States
• Language: English

Related Subjects

09 BIOMASS FUELS
EUCALYPTUSES
CULTIVATION TECHNIQUES
WOOD
CHEMICAL COMPOSITION
DELIGNIFICATION
ENZYMATIC HYDROLYSIS
AGE DEPENDENCE
ASH CONTENT
BIOMASS
BIOMASS PLANTATIONS
CARBOHYDRATES
CHEMICAL REACTION YIELD
COMPARATIVE EVALUATIONS
FRUCTOSE
GLUCOSE
IRRIGATION
LEAVES
LIGNIN
RAW MATERIALS
SACCHARIFICATION
SACCHAROSE
SCANNING ELECTRON MICROSCOPY
STARCH
STEAM
SULFURIC ACID
WOOD OILS
ALDEHYDES
CHEMICAL REACTIONS
DECOMPOSITION
DISACCHARIDES
ELECTRON MICROSCOPY
ENERGY SOURCES
EVALUATION
HEXOSES
HYDROGEN COMPOUNDS
HYDROLYSIS
INORGANIC ACIDS
KETONES
LYSIS
MAGNOLIOPHYTA
MAGNOLIOPSIDA
MATERIALS
MICROSCOPY
MONOSACCHARIDES
OILS
OLIGOSACCHARIDES
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PLANTS
POLYSACCHARIDES
REAGENTS
RENEWABLE ENERGY SOURCES
SACCHARIDES
SOLVOLYSIS
TREES
YIELDS
091000* - Biomass Fuels- Properties & Composition- (1990-)
090800 - Biomass Fuels- Production- (1990-)
090900 - Biomass Fuels- Processing- (1990-)