Abstract
Batch reactors were employed to investigate the kinetics of cellulose hydrolysis under extremely low acid (ELA) and high temperature condition. The sawdust was pretreated by Autohydrolysis prior to the batch reaction. The maximum yield of glucose obtained from the batch reactor experiment was about 70% for the pretreated sawdust, this occurred at 210 and 220°C. The maximum glucose yield from the untreated sawdust was much lower at these temperatures, about 55%. The maximum yields of glucose from the lignocellulosics were obtained between 15th and 20th minutes after which gradual decrease was observed.
References
Boussaid, A, J. Robinson, Yi-jin Cai, D. J. Gregg, and J. N. Saddler (1999) Fermentability of the hemicellulosederived sugars from steam-exploded softwood (Douglas Fir).Biotechnol. Bioeng. 64: 284–289.
Zerbe, J. I., and A. J. Baker (1987) Invertigation of fundamentals of two-stage, dilute sulfurio acichydrolysis of wood. pp. 927–947 In: K. Donald (ed.).Energy from Biomass and Wastes X. Institute of Gas Technology, Chicago, USA.
Layokun, S. K. (1985) Ethanol production from cellulose and holocellulose byPachusole tannophilus JNSChE 4: 26–35.
Solomon, B. O., S. K. Layokun, P. K. Nwesigwe, and P. O. Olutiola (1990) Hydrolysis of sawdust by cellulase enzyme derived fromAspergillus flavus Linn Isolate NSPR 101 beyond the initial fast rate period.JNSChE. 9: 1–2.
Ojumu, TV, B. O. Solomon, E. Betiku, and S. K. Layokun (2003) Cellulase production byAspergillus flavus Lin isolate NSPR 101 fermented in sawdust, baggasse and comcob.Afr. J. Biotechnol. 2: 150–152.
Badmus M. A. O. (2002) Auto-hydrolysis production of glucose from palm tree trunk.NJISS 1: 1–4.
Jeffries, T. W., and Y. Y. Lee (1999). Feedstocks: New supplies and processing.Appl. Biochem. Biotechnol. 77–79: 3–4.
Kim, J. S., Y. Y. Lee, and R. W. Torget (2001) Cellulose hydrolysis under extremely low sulfuric acid and hightemperature conditions.Appl. Biochem. Biotechnol. 91–93: 331–340.
Fan, L. T., M. M. Gharpuray, and Y. B. H. Lee (1987)Cellulose Hydrolysis. Vol. 3, pp. 1–68. Springer-Verlag, Berlin, Germany.
Vinzant, T. B., L. Ponfick, N. Nagle, C. I. Ehrman, J. B. Reynolds, and M. E. Himmel (1994) SSF Comparison of selected woods from southern sawmills.Appl. Biochem. Biotechnol. 45/46: 611–626.
Conner, A. H., B. F. Wood, C. G. Hill, Jr., and J. F. Harris (1985) Kinetic model for the dilute sulfuric acid saccharification of lignocellulose.J. Wood Chem. Technol. 5: 461–489.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Ojumu, T.V., AttahDaniel, B.E., Betiku, E. et al. Auto-hydrolysis of lignocellulosics under extremely low sulphuric acid and high temperature conditions in batch reactor. Biotechnol. Bioprocess Eng. 8, 291–293 (2003). https://doi.org/10.1007/BF02949219
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF02949219