Author:
SANTOS RICARDO B.,JAMEEL HASAN,CHANG HOU-MIN,HART PETER W.
Abstract
Most studies aimed at determining rates of hardwood delignification and carbohydrate degradation have focused on understanding the behavior of a single wood species. Such studies tend to determine either the delignification rate or the rate of carbohydrate degradation without examining the potential interactions resulting from related variables. The current study provides a comprehensive evaluation of lignin and carbohydrate degradation during kraft pulping of multiple hardwood species. The kraft delignification rates of Eucalyptus urograndis, E. nitens, E. globulus, sweet gum, maple, red oak, red alder, cottonwood, and acacia were obtained. The kinetics of glucan, xylan, and total carbohydrate dissolution during the bulk phase of the kraft pulping process for those species also were investigated. The wide ranges of delignification and carbohydrate degradation rates were correlated to wood chemical characteristics. It appears that the syringyl:guaiacyl lignin ratio and lignin-carbohydrate complexes are the main factors responsible for the differences in kraft pulping performance among the hardwoods studied.
Subject
Mechanical Engineering,General Materials Science,Media Technology,General Chemical Engineering,General Chemistry
Reference50 articles.
1. Gierer, J., Wood Sci. Technol. 14(4): 241(1980).
2. Chiang, V.L., Cho, H.J., and Puumala, R.J., Tappi J. 70(2): 101(1987).
3. Sarkanen, K.V. and Hergert, H.L. in Lignins: Occurrence, Formation, Structure and Reaction, (K.V. Sarkanen and C.H. Ludwig, Eds.), Wiley-Interscience, New York, 1971.
4. Akiyama, T., Goto, H., Nawawi, D.S., et al., Holzforschung 59(3): 276(2005).
5. Dimmel, D., MacKay, J., Courchene, C., et al., J. Wood Chem. Technol. 22(4): 235(2002).
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