Processing of Acacia dealbata in Aqueous Media: First Step of a Wood Biorefinery
作者： Remedios Yáñez , Aloia Romaní , Gil Garrote , José Luis Alonso , Juan Carlos Parajó
DOI: 10.1021/IE900233X
关键词:
摘要: In order to assess the suitability of autohydrolysis as a first biorefinery stage, Acacia dealbata wood samples were heated in aqueous media range 170−240 °C. Under selected operational conditions (maximum temperature, 215 °C), 70% xylan was converted into xylooligosaccharides, whereas cellulose and lignin remained solid phase with little alteration. The spent solids from treatments contained 65% (measured glucan), 8% hemicelluloses, 27% lignin. Kinetic models describing solubilization well polysaccharide fractions (glucan, xylan, arabinosyl acetyl substituents hemicelluloses) developed. All considered sequential, first-order, pseudohomogeneous kinetics, Arrhenius type dependence on provided satisfactory interpretation experimental data.
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