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Mild autohydrolysis: an environmentally friendly technology for xylooligosaccharide production from wood
Author(s) -
Garrote Gil,
Domínguez Herminia,
Parajó Juan Carlos
Publication year - 1999
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/(sici)1097-4660(199911)74:11<1101::aid-jctb146>3.0.co;2-m
Subject(s) - xylose , furfural , xylan , cellulose , chemistry , environmentally friendly , lignin , pulp and paper industry , hemicellulose , hydrolysis , biorefinery , biofuel , chemical engineering , raw material , waste management , organic chemistry , fermentation , catalysis , ecology , engineering , biology
Eucalyptus globulus wood samples were subjected to hydrothermal treatments under mild operational conditions (145–190 ° C, liquor to solid ratio 6–10 g g −1 , reaction times up to 7.5 h). Residual xylan, xylooligosaccharides, other sugars, furfural, glucan and lignin contents were determined. Negligible effects were caused by hydrothermal treatments on both cellulose and lignin. Kinetic models were developed which describe the hydrolysis of hemicelluloses. Xylan degradation, xylooligosaccharide and xylose generation, and xylose dehydration to furfural were accurately described by models based on pseudohomogeneous, first‐order kinetics with Arrhenius‐type temperature dependence. These models are useful for a technical evaluation of this environmentally friendly technology. © 1999 Society of Chemical Industry