Abstract
The effects of the steam-explosion treatment on aqueous fractionation and bioconversion of wheat straw have been investigated. The treatments have been carried out in batch and continuous reactors with capacity of 0.5 Kg/cycle and 150 Kg/h, respectively. The exploded materials have been sequentially extracted with water at 65°C and sodium hydroxide 1.5%. Analytical determinations of liquid fractions and solid residues haveled to the fractionation pattern of the carbohydrates as, monomers, oligomers, and polymers. Evaluations of total acidity, ash content, and lignin recovery have improved understanding of the process. This part of the work has allowed us to derive: the empiric relationship between the batch and the continuous reactors and the yield and availability of pentoses and hexoses in various phases. Selected samples have been tested in enzymatic-hydrolysis experiments, pointing out the effect of treatment severity and reactor used on the saccharification yield.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Chornet, E. and Overend, R. (1988), in Steam Explosion Techniques, Focher, B., Marzetti, A., and Crescenzi, V., eds. Gordon & Breach, Amsterdam, pp. 21–58.
Brownell, H. H., Yu, E. K. C., and Saddler, J. N. (1986), Biotechnol. Bioeng. 28, 792–801.
Bouchard, J., Leger, S., and Chornet, E. (1986), Biomass, 9, 161–171.
Abatzoglou, N., Chornet, E., and BelKacemi, K. (1992), Chem. Eng. Sci. 47, 1109–1122.
Nazhad, M. M., Ramos, L. P., Paszner, L., and Saddler, J. N. (1995), Enzyme Microbiol. Technol. 17, 68–74.
Sineiro, J., Dominguez, H., Nunez, M. J., and Lema, J. M. (1995), Enzyme Microbiol. Technol. 35, 23–32.
Viggiano, D., Cardinale, G., Felici, F., Nanna, F., and Zimbardi, F. (1994), Proceedings of the 8th European Conference on Biomass for Energy, Environment, Agriculture and Industry. Grassi, G., ed., Elsevier, pp. 1385–1392.
Vlasenko, E. Yu., Ding, H., Labavitch, J. M., and Shoemaker, S. P. (1997), Biores. Technol. 59, 109–119.
Von Sivers, M., and Zacchi, G. (1995), Biores. Technol. 51, 43–52.
Lynd, L. R., Cushman, J. H., Nichols, R. J., and Wyman, C. E. (1991), Science 251, 1318–1323.
Bashir, S., and Lee, S. (1994), Fuel Sci. Technol. 12, 1427–1473.
Carrasco, F., Chornet, E., Overend, R.P., and Heitz, M. (1986), Can. J. Chem. Eng. 64, 986–993.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Zimbardi, F., Viggiano, D., Nanna, F. et al. Steam explosion of straw in batch and continuous systems. Appl Biochem Biotechnol 77, 117–125 (1999). https://doi.org/10.1385/ABAB:77:1-3:117
Issue Date:
DOI: https://doi.org/10.1385/ABAB:77:1-3:117