Abstract
Yellow poplar wood sawdust consists of 41% cellulose and 19% hemicellulose. The goal of pressure cooking this material in water is to hydrate the more chemically resistive regions of cellulose in order to enhance enzymatic conversion to glucose. Pretreatment can generate organic acids through acid-catalyzed degradation of monosaccharides formed because of acids released from the biomass material or the inherent acidity of the water at temperatures above 160°C The resulting acids will further promote the acid-catalyzed degradation of monomers that cause both a reduction in the yield and the formation of fermentation inhibitors such as hydroxymethyl furfural and furfural. A continuous pH-monitoring system was developed to help characterize the trends in pH during pretreatment and to assist in the development of a base (2.0 M KOH) addition profile to help keep the pH within a specified range in order to reduce any catalytic degradation and the formation of any monosac-charide degradation products during pretreatment. The results of this work are discussed.
Author to whom all correspondence and reprint requests should be addressed.
This is a preview of subscription content, log in via an institution.
Buying options
Tax calculation will be finalised at checkout
Purchases are for personal use only
Learn about institutional subscriptionsPreview
Unable to display preview. Download preview PDF.
References
Kirk, T. K. and Farrell, R. L. (1987), Ann. Rev. Microbiol. 41, 465–505.
Zhbankov, R. G. (1992), J. Mol. Structure 270, 523–539.
Weil, J., Westgate, P. J., Kohlmann, K., and Ladisch, M. R. (1994), Enzyme Microb. Technol. 16, 1002–1004.
Weil, J., Sarikaya, A., Rau, D., Goetz, J., Ladisch, C., Brewer, M., Hendrickson, R., and Ladisch, M. R., (1997), Appl. Biochem. Biotechnol. 68, 41–60.
Kohlmann, K. L., Sarikaya, A., Westgate, P. J., Weil, J., Velayudhan, A., Hendrickson, R., and Ladisch, M. R. (1995), in Enzymatic Degradation of Insoluble Polysaccharides. M. Penner and J. Saddler, eds., American Chemical Society, Washington, DC, ACS Symp. Ser. No. 618, 237–255.
Macdonald, D. D., Hettiarachchi, S., Song, H., Makela, K., Emerson, R., and Ben-Haim, M. (1992), J. Solution Chem. 21(8), 849–881.
Baugh, K. D. and McCarty, P. L. (1988), Biotechnol Bioeng. 31, 50–61.
Ladisch, M. R. (1989), in Biomass Handbook, C. W. Hall and O. Kitani, eds., Gordon and Breach, pp. 434–451.
Bienkowski, P. R., Ladisch, M. R. Narayan, R., Tsao, G. T., and Eckert, R. (1987), Chem. Eng. Comm. 51, 179–192.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1998 Springer Science+Business Media New York
About this chapter
Cite this chapter
Weil, J., Brewer, M., Hendrickson, R., Sarikaya, A., Ladisch, M.R. (1998). Continuous pH Monitoring During Pretreatment of Yellow Poplar Wood Sawdust by Pressure Cooking in Water. In: Finkelstein, M., Davison, B.H. (eds) Biotechnology for Fuels and Chemicals. Applied Biochemistry and Biotechnology. Humana Press, Totowa, NJ. https://doi.org/10.1007/978-1-4612-1814-2_10
Download citation
DOI: https://doi.org/10.1007/978-1-4612-1814-2_10
Publisher Name: Humana Press, Totowa, NJ
Print ISBN: 978-1-4612-7295-3
Online ISBN: 978-1-4612-1814-2
eBook Packages: Springer Book Archive