The Extraction of Wood In Fixed Bed and Atmospheric Condition

Authors : Melek GÜRKAHRAMAN, Dursun PEHLİVAN

Pages : 239-250

View : 10 | Download : 5

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :Extraction of poplar wood chips with ethanol in a fixed bed and in a soxhlet apparatus in atmosferic conditions was studied. The fixed-bed extraction of the wood was carried out at 30°C and 70°C bed temperatures The conversion rates of wood insert ignore into journalissuearticles values(daf basis); were determined from the decrease in the amounts of wood in the bed. The extract yield obtained in a fixed bed was 6.45% at 30°C and 7.44% at 70°C. The yield reached 6.02% in a soxhlet apparatus. FTIR and TGA analyses of the extracts were also undertaken. The FTIR spectra of the extracts indicated mainly lignin and hemicellulose properties. The TGA patterns showed that the lignin components transfered into the extracts were decomposed first.
Keywords : Wood, ethanol, extraction, FTIR, TGA