2013
DOI: 10.15376/biores.8.4.5319-5332
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Ethanol Precipitation of Hetero-Polysaccharide Material from Hardwood by Alkaline Extraction Prior to the Kraft Cooking Process

Abstract: aHemicellulose material is an abundant and relatively under-utilized hetero-polysaccharide material present in lignocellulosic materials. In this study, an alkaline treatment was applied to sweetgum and Eucalyptus globulus chips to extract hemicelluloses prior to kraft pulping to subsequently evaluate the final product and process. An alkaline extraction (10 and 50% NaOH by weight on wood) for 60 min at 100 °C followed by precipitation in ethanol recovered 4.3% of the biomass as a predominantly xylan material … Show more

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