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Acid pre-treatment and enzymatic hyrolysis of rapeseed straw for bioethanol production.

This study investigates the effect of acid pre-treatment conditions on the amount of glucose extracted from OSR straw following hydrolysis.

Year of Publication2010

Oilseed rape (OSR) straw represents a potential feedstock for bioethanol production. Unlike carbohydrate feedstocks, lignocellulosic feedstocks must be pre-treated prior to hydrolysis and fermentation. The current study investigates the effect of acid pre-treatment conditions on the amount of glucose extracted from OSR straw following hydrolysis. Glucose yield after enzymatic hydrolysis (using cellulose and β glucosidase at 50OC) was studied by varying biomass concentration (5, 10, 15% w/w), acid concentration (1, 1.5, 2, 2.5 and 3% w/w) and pre-treatment time (10, 30, 60 and 90 min) during pre-treatment at 130OC. The maximum glucose recovery was 62% of the cellulose content of OSR straw at 5% (w/w) biomass concentration, 2.5% (w/w) acid concentration and pre-treatment time of 90 min.

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Additional keywords/tags

glucosehydrolysisosr strawsulphuric acid pre treatment
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