Abstract
Diffusivities of sulfuric acid in Aspen wood were experimentally determined at various diffusional temperatures and fitted to Arrhenius equations. These equations were subsequently incorporated into a theoretical model to establish the effect of transient acid concentration gradients within a solid substrate during acid-catalyzed hydrolysis of hemicellulose. Total xylose yield was found to decrease for increasing chip size, and this effect was intensified by increasing reaction temperature. Quantitative criteria were established for assessment of transient acid concentration effects upon xylose yield and reaction time at various reaction conditions.
Similar content being viewed by others
References
Fukuyama, M. and Urakami, H. (1986),Mokuzai Gakkaishi 32, 147–154.
Fukuyama, M. and Urakami, H. (1982),Mokuzai Gakkaishi 28, 17–24.
Fukuyama, M. and Urakami, H. (1980),Mokuzai Gakkaishi 26, 587–594.
McGregor, R. P., Peemoeller, H., Schneider, M. H., and Scharp, A. R. (1983),J. Appl. Polym. Sci. 37, 901–909.
Bains, B. S. and Kumar, S. (1978),J. Timber Dev. Assoc. India 24, 25–32.
Kumar, S. and Jain, V. K. (1973),Holsforsch. Holzvertwert. 25, 21–24.
Fukuyama, M., Urakami, H., and Ikuho, I. (1980),Kyoto-furitsu Daigaku Gakututsu Hokoku. Nogaku 32, 101–109.
Akhtaruzzaman, A. F. M. and Virkola, N. E. (1979),Pap. Puu 61, 578–580.
Surma-Slusarska, B., Rutkowski, J., and Reimschussel, W. (1978),Pregl. Papier 32, 118–125.
Grohmann K., Torget, R., and Himmel, M. (1985),Biotechnol. Bioeng. Symp. 15, 59–80.
Brennan, A. H., Schell, D. J., Hoagland, W., and Werdene, P. G. (1987),Ninth Symp. Biotechnol. Bioeng., Boulder, CO.
Kim, S. B. and Lee, Y. Y. (1986),Biotechnol. Bioeng. Symp. 17, 71–84.
Tillman, L. M., Abaseed, A. E., Lee, Y. Y., and Torget, R. (1989),Biotechnol. Bioeng. Symp. 20/21, 107–117.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Tillman, L.M., Lee, Y.Y. & Torget, R. Effect of transient acid diffusion on pretreatment/hydrolysis of hardwood hemicellulose. Appl Biochem Biotechnol 24, 103–113 (1990). https://doi.org/10.1007/BF02920237
Issue Date:
DOI: https://doi.org/10.1007/BF02920237