Severity Function Describing the Hydrolysis of Xylan Using Carbonic Acid

  • G. Peter Van Walsum
Chapter
Part of the ABAB Symposium book series (ABAB)

Abstract

Beech wood derived xylan to hydrolyzed to predominantly xylose monomer units after exposure to hot, compressed liquid water saturated with carbon dioxide. Similar treatment without CO2 saturation resulted in only minor hydrolysis and a smaller fraction of monomers among the hydrolysis products. Severity of the hydrolysis reaction was correlated to reaction time, temperature, and carbon dioxide partial pressure and followed a function similar to those used to characterize mineral acid systems. Results from parallel hydrolysis experiments with an aqueous system and a very dilute sulfuric acid system allowed an approximation of the dissociation constant of carbonic acid in the temperature range of 170–230°C. Results suggest that carbonic acid may be a viable reagent for promoting hydrolysis without mineral acids, especially in the case of a bioprocessing plant that produces carbon dioxide.

Index Entries

Xylan carbonic acid severity hydrolysis biomass conversion pretreatment carbon dioxide 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    Lynd, L. R., Cushman, J. H., Nichols, R. J., and Wyman, C. E. (1991), Science 251(15), 1318–1323.CrossRefGoogle Scholar
  2. 2.
    Torget, R. and Hsu, T. (1994), Appl. Biochem. Biotechnol. 45/46, 5–22.CrossRefGoogle Scholar
  3. 3.
    Torget, R., Hatzis, C., Hayward, T. K., Hsu, T., and Phillipidis, G. P. (1996), Appl. Biochem. Biotechnol. 57/58, 85–101.CrossRefGoogle Scholar
  4. 4.
    Lee, Y. Y., Wu, Z., and Torget, R. W. (2000), Bioresour. Technol. 71(1), 29–38.CrossRefGoogle Scholar
  5. 5.
    Lynd, L. R., Elander, R. T., and Wyman, C. E. (1996), Appl. Biochem. Biotechnol. 57/58, 741–761.CrossRefGoogle Scholar
  6. 6.
    van Walsum, G. P., Allen, S. G., Spencer, M. J., Laser, M. S., Antal, M. J., and Lynd, L. R. (1996), Appl. Biochem. Biotechnol. 54/55, 157–170.CrossRefGoogle Scholar
  7. 7.
    Shevchenko, S. M., Chang, K., Robinson, J., and Saddler, J. N. (2000), Bioresour. Technol. 72, 207–211.CrossRefGoogle Scholar
  8. 8.
    Duranceau, S. J., Anderson, R. K., and Teegarden, R. D. (1999), J. Am. Water Works Assoc. 91(5), 85–96.Google Scholar
  9. 9.
    Minkova, V., Marinov, S. P., Zanzi, R., et al. (2000), Fuel Process. Technol. 62, 45–52.CrossRefGoogle Scholar
  10. 10.
    Puri, V. P. and Mamers, H. (1983), Biotechnol. Bioeng. 25, 3149–3161.CrossRefGoogle Scholar
  11. 11.
    Pavilon, S. J. (1990), US Patent no. 4952504.Google Scholar
  12. 12.
    Pavilon, S. J. (1992), US Patent no. 5135861.Google Scholar
  13. 13.
    Ellis, A. J. (1959), Am. J. Sci. 257, 217–234.CrossRefGoogle Scholar
  14. 14.
    Ellis, A. J. and Golding, R. M. (1963), Am. J. Sci. 261, 47–60.CrossRefGoogle Scholar
  15. 15.
    Ryzhenko, B. N. (1963), Geochemistry 2, 151–164.Google Scholar
  16. 16.
    Sweeton, F. H., Mesmer, R. E., and Baes, C. F. Jr. (1974), J. Solut. Chem. 3(3), 191–214.CrossRefGoogle Scholar
  17. 17.
    Overend, R. P. and Chornet, E. (1987), Phil. Trans. R. Soc. Lond. A321, 523–536.CrossRefGoogle Scholar
  18. 18.
    Chum, H. L., Johnson, D. K., Black, S. K., and Overend, R. P. (1990), Appl. Biochem. Biotechnol. 24/25, 1–14.CrossRefGoogle Scholar
  19. 19.
    Abatzoglou, N., Chornet, E., and Overend, R. P. (1992), Chem. Eng. Sci. 47(5), 1109–1122.CrossRefGoogle Scholar
  20. 20.
    Bouchard, J., Nguyen, T. S., Chornet, E., and Overend, R. P. (1991), Bioresour. Technol. 36, 121–131.CrossRefGoogle Scholar
  21. 21.
    Takenouchi, S. and Kennedy, G. C. (1964), Am. J. Sci. 262, 1055–1074.CrossRefGoogle Scholar
  22. 22.
    Zawasza, A. and Malesinska, B. Y. (1981), J. Chem. Eng. Data 26, 388–391.CrossRefGoogle Scholar
  23. 23.
    Read, A. J. (1975), J. Solut. Chem. 4(1), 53–70.CrossRefGoogle Scholar
  24. 24.
    Park, S. N., Kim, C. S., Kim, M. H., Lee, I.-J., and Kim, K. (1998), J. Chem. Soc. Faraday Trans. 94, 1421–1425.CrossRefGoogle Scholar
  25. 25.
    Bilal, B. A. and Müller, E. (1993), Z. Naturforsch. 48a, 1073–1080.Google Scholar

Copyright information

© Springer Science+Business Media New York 2001

Authors and Affiliations

  • G. Peter Van Walsum
    • 1
  1. 1.Department of Environmental Studies and Glasscock Energy Research CenterBaylor UniversityWacoUSA

Personalised recommendations