Abstract
The production of xylose fromEucalyptus globulus wood samples in media containing sulphuric acid was studied. The prehydrolysis reactions were carried out in autoclave. All the experiments were performed with liquid/wood ratio of 10 g/g. The effects of sulphuric acid concentration (within the range 2–6%), reaction time (0–6 h) and temperature (115 or 130°C) on the type and distribution of reaction products were studied. Xylose was the main compound generated by hydrolysis. The xylose concentration/time series of data were fitted to a kinetic model which provided a close reproduction of experimental results. The concentrations of other reaction products (glucose, arabinose, furfural and acetic acid) in reaction media were also determined. The results obtained are compared with those obtained in experiments carried out at atmospheric pressure.
Zusammenfassung
Die Herstellung von Xylose aus Holz von Eucalyptus globulus mit Hilfe von Schwefelsäure wurde untersucht. Die Vorhydrolyse wurde im Autoklaven durchgeführt. Das Flottenverhältnis (Flüssigkeit/Holz) betrug in allen Experimenten 10 g/g. Der Einfluß der Säurekonzentration (2–6%), der Reaktionszeit (0–6 h) und der Temperatur (115 oder 130°C) auf die Art und Verteilung der Reaktionsprodukte wurde untersucht. Xylose war jeweils das Hauptprodukt der Hydrolyse. Die Ausbeute-Daten wurden durch ein kinetisches Model simuliert, das eine gute Vorhersage der Ergebnisse erlaubt. Die Konzentrationen anderer Reaktionsprodukte wie Glucose, Arabinose, Furfural und Essigsäure wurden ebenfalls bestimmt. Die Ergebnisse wurden mit denjenigen vorangehender Untersuchungen unter Atmosphärendruck verglichen.
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References
Ackerson, M.;Ziobro, M.;Gaddy, J. L. 1981: Two-stage acid hydrolysis of biomass. Biotechnol. Bioeng. Symp. 11: 103–112
Beck M. J. 1986: Effect of intermittent feeding of cellulose hydrolyzate to hemicellulose hydrolyzate on ethanol yield byPachysolen tannophilus. Biotechnol. Lett. 8: 513–516
Brennan A. H.;Hoagland, W.;Schell, S. J. 1986: High temperature acid hydrolysis for biomass using an engineering-scale plug flow reactor: results of flow solids testing. Biotechnol. Bioeng. 17: 53–70
Carrasco, F. 1991: Fundamentos de la producción de furfural. Afinidad 48: 183–189
Clausen, E. C.;Gaddy, J. L. 1982: Production of ethanol from cellulosic residues by chemical/biochemical methods. Liquid Fuel Systems 6: 87–103
Conner, A. H. 1984: Kinetic modeling of hardwood prehydrolysis. Part I. Xylan removal by water prehydrolysis. Wood Fiber Sci. 16: 268–277
Conner, A. H.;Lorenz, L. F. 1986: Kinetic modeling of hardwood prehydrolysis. Part III. Water and dilute acetic acid prehydrolysis of southern red oak. Wood Fiber Sci. 18: 248–263
David, C.;Fornassier, R.;Lejong, W.;Vanlautem, N. 1988 Pretreatment ofEucalyptus wood with sodium hypochloryte and enzymatic hydrolysis with cellulases ofTrichoderma viride. J. Appl. Polym. Sci. 36: 29–41
Delgenes, J. P.;Moletta, R.;Navarro, J. M. 1990: Acid hydrolysis of wheat straw and process consideration for ethanol fermentation byPichia stipitis Y7124. Proc. Biochem. Int. 8: 132–135
Farmos-Yhtymä 1988: Process for the preparation of xylitol from xylose by cultivatingCandida guillermondii. Int. Pat. Appl. Wo88/05467
Frazer, F. R.;McCaskey, T. A. 1989: Wood hydrolyzate treatments for improved fermentation of wood sugars to 2,3-butanediol Biomass. 18: 31–42
Harris, J. F.;Baker, A. J.;Zerbe, J. I. 1984: Two stage dilute acid hydrolysis of hardwood for ethanol production. Energy from Biomass and Wastes. 8: 1151–1170
Maloney, M. T.;Chapman, T. W.;Baker, A. J. 1985: Dilute acid hydrolysis of paper birch: Kinetics studies of xylan and acetyl group hydrolysis. Biotechnol. Bioeng. 27: 355–361
Maloney, M. T.;Chapman, T. W.;Baker, A. J. 1986: An engineering analysis of the production of xylose by dilute acid hydrolysis of hardwood hemicellulose. Biotechnol. Prog. 2: 192–202
Nakagawa, M.;Kamiyama, Y.;Sakai, Y. 1986: Saccharification of tropical wood. I. Hydrolysis rates of giant ipil-ipil wood pentosan and cellulose in dilute sulfuric acid. Japanese J. Tropical Agric. 30: 153–159
Parajó, J. C.;Vázquez, D.;Alonso, J. I.;Santos, V.;Domínguez, H. 1993: Prehydrolysis ofEucalyptus wood with dilute sulphuric acid: operation at atmospheric pressure. Holz Roh-Werkst. 51: 357–363
Parekh, S. E.;Yu, S.;Wayman, M. 1986: Adaptation ofCandida shehetae andPichia stipitis to wood hydrolysates for increased ethanol production. Appl. Microbiol. Biotechnol. 25: 300–304
Pereira, H. 1988: Variability in the chemical composition of plantation eucalypts (Eucalyptus globulus Labill.). Wood Fiber Sci. 20: 82–90
Ranganathan, S.;McDonald, D. G.;Bakhshi, N. N. 1985: Kinetic studies of wheat hydrolysis using sulphuric acid. Can. J. Chem. Eng. 63: 840–844
Roberto, I. C.;Felipe, M. G. A.;Lacis, L. S.;Silvio, S.;Mancilha, I. M. 1991: Utilization of sugar cane bagasse hemicellulosic hydrolyzate byCandida gillermondii for xylitol production. Biores. Technol. 36: 271–275
Vázquez, D.;Lage, M. A.;Paraijó, J. C.;Vázquez, G. 1991: Transformación de materiales lignocelulósicos: Composición, fraccionamiento y aprovechamiento. Rev. Agroq. Tecnol. Alim. 31: 143–164
Watson, N. E.;Prior, B. A.;Lategan, P. M. 1984: Factors in acid treated bagasse inhibiting ethanol production from D-xylose byPachysolen tannophilus. Enzyme Microb. Technol. 6: 451–456
Wayman, M.;Yu, S. 1985: Acetone-butanol fermentation of xylose and sugar mixtures. Biotechnol. Lett. 7: 255–260
Wilson, J. J.;Deschatelets, L.;Nishikawa, N. K. 1989: Comparative fermentability of enzymatic and acid hydrolysates of steam-pretreated aspenwood hemicellulose byPichia stipitis CBS 5776. Appl. Microbiol. Biotechnol. 31: 592–596
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Parajó, J.C., Vázquez, D., Alonso, J.L. et al. Prehydrolysis ofEucalyptus wood with dilute sulphuric acid: operation in autoclave. Holz als Roh-und Werkstoff 52, 102–108 (1994). https://doi.org/10.1007/BF02615474
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DOI: https://doi.org/10.1007/BF02615474