LOW TEMPERATURE SULFUR DIOXIDE PRETREATMENT

A process for converting lignocellulosic biomass to glucose or ethanol includes subjecting the lignocellulosic biomass to a SO2 pretreatment within the temperature range 110°C-150°C. Good glucose yields have been achieved when the SO2 pretreatment is conducted for more than 90 minutes and when the t...

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Bibliographische Detailangaben
Hauptverfasser:	LEDUC, NATACHA, MACKENZIE, DOUGLAS A, MARTENS, KRISTIN, FOODY, BRIAN, TOLAN, JEFFREY S, MACDONALD, DANIEL G
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	APPARATUS THEREFOR BEER BIOCHEMISTRY CHEMISTRY COMPOSITIONS BASED THEREON DERIVATIVES OF NATURAL MACROMOLECULAR COMPOUNDS ENZYMOLOGY FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIREDCHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERSFROM A RACEMIC MIXTURE METALLURGY MICROBIOLOGY MUTATION OR GENETIC ENGINEERING ORGANIC MACROMOLECULAR COMPOUNDS PAPER-MAKING PRODUCTION OF CELLULOSE PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCESFROM CELLULOSE-CONTAINING MATERIALS REGENERATION OF PULPING LIQUORS SPIRITS TEXTILES THEIR PREPARATION OR CHEMICAL WORKING-UP VINEGAR WINE
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Beschreibung
Zusammenfassung:	A process for converting lignocellulosic biomass to glucose or ethanol includes subjecting the lignocellulosic biomass to a SO2 pretreatment within the temperature range 110°C-150°C. Good glucose yields have been achieved when the SO2 pretreatment is conducted for more than 90 minutes and when the total amount of SO2 available is greater than 20 wt% based on dry weight of lignocellulosic biomass. La présente invention concerne un procédé de conversion de biomasse lignocellulosique en glucose ou en éthanol qui consiste à soumettre la biomasse lignocellulosique à un prétraitement au SO2 dans la plage de température de 110 °C à 150 °C. De bons rendements en glucose sont obtenus lorsque le prétraitement au SO2 est mis en uvre pendant plus de 90 minutes et lorsque la quantité totale de SO2 disponible est supérieure à 20 % en poids par rapport au poids sec de biomasse lignocellulosique.