SO2-catalysed prehydrolysis of coniferous wood for ethanol production
Rent the article at a discountRent now
* Final gross prices may vary according to local VAT.Get Access
This paper reports studies of large scale, 1500 kg/h, SO2-catalysed prehydrolysis of coniferous wood chips, samples then being hydrolyzed by a wood-saccharifying enzyme system followed by fermentation to ethanol in the laboratory. Hemicellulose hydrolysis using SO2 catalyst (prehydrolysis) was found to be more effective than steam alone (autohydrolysis). Prehydrolysis time was 2 min, with steam pressure at 1.2 to 1.7 MPa (175 to 250 psig), and SO2 catalyst 2.0 to 2.6% on dry wood. The amount of sugars recovered upon enzyme saccharification of the prehydrolysed wood was about 70% of the weight of the wood. When these combined hemicellulose and cellulose sugars were fermented by a pentose-fermenting strain of yeast,Pichia stipitis R, 372 L ethanol/tonne of (dry) wood was obtained.
- Parekh, S., Yu, S. and Wayman, M. 1986. J. Appl. MIcrobiol. and Biotechn. in press.
- Wayman, M., Lora, J.H. and Gulbinas, E. 1979. Chemistry for Energy, ACS Symposium Series Monograph No. 90, 183–201.
- Wayman, M. and Parekh, S. 1985. Biotechn. Letts. 7:909–912.
- Wayman, M., Tallevi, A. and Winsborrow, B. 1984. Biomass 6:183–191.
- SO2-catalysed prehydrolysis of coniferous wood for ethanol production
Volume 8, Issue 10 , pp 749-752
- Cover Date
- Print ISSN
- Online ISSN
- Kluwer Academic Publishers
- Additional Links
- Industry Sectors
- Author Affiliations
- 1. University of Toronto, M5S 1A4, Toronto, Ontario, Canada
- 2. Département de génie chimique, Université de Sherbrooke, J1K 2R1, Sherbrooke, Québec, Canada
- 3. Division of Biosciences, National 1 Research Council of Canada, K1A 0R6, Ottawa, Canada