Abstract
The results of an experimental study of the acid hydrolysis of hardwood are presented in the form of values for the three parameters, activation energy, power on the acid concentration, and pre-exponen-tial factor, of the first order kinetic constants for each of the following reaction participants: xylan remaining, glucan remaining, xylose formed, and xylose decomposed. These are used as a base for a quantitative theory to predict the temperature, time, and acid concentrations needed for effective pretreatment of the substrate for subsequent enzymatic hydrolysis of the glucan. This theory is based on the assumption that successful pretreatment requires >90% removal of the xylan, <10% removal of the glucan, and >80% xylose yield. This theory is compared with selected published data.
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References
Conner, A. H. (1983),Wood and Fiber Science 16, (2), 268–277.
Mason, W. H. (1921), US Patent1,399,976.
Richter, G. A. (1956),Tappi 39, (4), 193–210.
Marchessault, R. H. and St.-Pierre, J. (1978), Chemrawn Conf., Toronto, Canada.
Bender, R. (1979), US Patent4,136,207.
Lamptey, J., Robinson, C. W., and Moo-Young, M. (1985),Biotechnol. Letts. 7, (7), 531–534.
Wright, J. D. (1988), A.I.Ch.E. National Meeting, New Orleans, LA.
Grohmann, K., Torget, R., and Himmel, M. (1985),Biotechnol. Bioengr. Symp. No. 15 59–80.
Tanahashi, M., Takada, S., Aoki, T., Goto, T., Higuchi, T., and Hanai, S. (1985),Wood Res. 69, 36–51.
Grethlein, H. E., Allen, D. C, and Converse, A. O. (1984),Biotechol. Bioengr. 26, 1498–1505.
Brownell, H. H. and Saddler, J. N. (1985), Presented at the Chicago ACS meeting.
Kwarteng, I. K. (1983), PhD Thesis, Thayer School of Engr., Dartmouth College, Hanover, NH.
McParland, J. J., Grethlein, H. E., and Converse, A. O. (1982),Solar Energy 28, 55–63.
Saeman, J. F., Bubi, J. L., and Harris, J. E. (1945),Ind. Engr. Chem. Anal. Sec. 17, 35–37.
Root, D. F. (1956), PhD. thesis, University of Wisconsin.
Smith, P. C. (1980), ME Thesis, Thayer School of Engineering, Dartmouth College.
Grous, W. R., Converse, A. O., and Grethlein, H. E. (1986),Enzyme Microb. Technol. 8, 274–280.
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Converse, A.O., Kwarteng, I.K., Grethlein, H.E. et al. Kinetics of thermochemical pretreatment of lignocellulosic materials. Appl Biochem Biotechnol 20, 63–78 (1989). https://doi.org/10.1007/BF02936473
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DOI: https://doi.org/10.1007/BF02936473