Eucalyptus wood quality and its impact on kraft pulp production and use
Source abstract
Abstract
This paper summarizes the authors’ research findings over the last five years on eucalyptus wood properties and their impact on process efficiency and pulp use, addressing the influence of species and harvesting age. Efficient production of kraft pulp is achieved with eucalyptus wood having reasonably high density, low extractives and lignin contents, high lignin S/G ratio, and high xylan and uronic acid contents. Woods containing large amounts of lignin tend to possess lignin with low S/G ratios and are hard to process. Age significantly affects the chemistry and morphology of wood and its behavior in kraft pulping and pulp use. Wood density, extractives content, and fiber coarseness increase with age. Eucalyptus hemicelluloses are composed mainly of a xylan unusually rich in uronic acids, which is reasonably stable in kraft pulping. The xylans retained in the kraft pulp substantially improve its refinability. The increase in wood age and density increases fiber coarseness, which negatively affects pulp refinability, but increases pulp drainability.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Lignin and Wood Chemistry · Wood Treatment and Properties · Advanced Cellulose Research Studies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (29)
Show source-provided references
1. Gomide, J.L. and Demuner, B.J., O Papel 47(8):36(1986).
2. Goldschmid, O. In: Lignins, Occurrence, Formation, Structure, and Reactions (Sarkanen, K.V., and Ludwig, C.H., eds.), John Wiley and Sons, New York, 1971, pp. 241–266.10.1002/pol.1972.110100315 ↗
3. Lin, S.Y. and Dence, C.W., Methods in Lignin Chemistry, Springer-Verlag, 1992, Berlin, p. 578.10.1007/978-3-642-74065-7 ↗
4. Scott, R.W., Anal. Chem. 51(7):936(1979).10.1021/ac50043a036 ↗
5. Magaton, A.S., Study of Eucalyptus Hemicellulose Behavior During Kraft Pulping. Ph.D dissertation, Federal University of Minas Gerais, Brazil, 2008.
6. Wright, R., Outlook for Market Pulp Report: Demand, Supply, and Prices. Hawkins Wright, 2006, p. 48.
7. Colodette, J.L., Mokfienski, A., Gomide, J.L., Oliveira, R.C., J. Tianjin Univ. Sci. and Tech. A:71 (2004).
8. Peredo, M., Mora, C., Osses, M., Caracterización de la oferta pulp-able de eucalyptus de forestal Arauco. Bioforest S. A. Internal Report. January 2005, p. 58.
9. Gomide, J.L., Colodette, J.L., Oliveira, R.C., Silva, C.M., Revista Árvore, 29(1):129(2005).10.1590/S0100-67622005000100014 ↗
10. Gomes, F.J.B., Gouvêa, A.F.G., Colodette, J.L., Gomide, J.L., et al. O Papel 69(12):95(2008).
11. Backman, M.E. and De León, J.P., Proceedings, 2003 Eucepa Conference, Lisbon, pp. 206–213.
12. Freire, C.S.R., Silvestre, A.J.D., Pascoal Neto, C.C.L., Cavaleiro, J.A.S., Holzforschung 56(2):143(2002).10.1515/HF.2002.024 ↗
13. Gutierrez, A., Del Río, J.C., González-Vila, F.J., Romero, J., Holzforschung 53(5):481(1999).10.1515/HF.1999.079 ↗
14. Rodrigues, J., Meier, D., Faix, O., J. Anal. Appl. Pyrolysis,48:121(1998).10.1016/S0165-2370(98)00134-X ↗
15. Fergus, B.J. and Goring, D.A., Pulp Pap. Mag. Can. 19:314(1969).
16. Chang, H. and Sarkanen, K.V., Tappi J. 56:132(1973).
17. Collins, D., Pilotti, C., Wallis, A., Appita J. 43:193(1990).
18. Wallis, A.F.A., Wearne, R.H., Wright, P., Appita J. 49:427(1996).
19. Hibbert, A.I., Wearne, R.H., Wallis, A.F.A., Appita J. 52:781(1999).
20. Colodette, J.L. and Gomide, J.L., Proceedings, 2004 Genolyptus Program Annual Meeting, Campinas, Brazil, p. 16.
21. Nakamura, H., Nawawil, D.S., Kondo, K., et al., Proceedings, 2007 International Symposium on Wood Fiber and Pulping Chemistry, Durban, South Africa.
22. Pascoal Neto, C., Evtuguin, D., Pinto, P., et al., Proceedings, 2005 International Symposium on Wood Fiber and Pulping Chemistry, Auckland, New Zealand, pp. 431–438.
23. Daniel, A.I.D., Pascoal Neto, C., Evtuguin, D.V., Tappi J. 2(5):2(2003).
24. Ek, M., Gustavsson, C., Kadiric, J., Teder, A., Proceedings, 2001 Brazilian Symposium on the Chemistry of Lignins and Other Wood Components, Belo Horizonte, Brazil, pp. 99–106.
25. Simão, J.P., Egas, A.P.V., Baptista, C.M.S., Ind. Eng. Chem. Res. 44:2990(2005).10.1021/ie049062e ↗
26. Gustavsson, C., On the Interrelation Between Kraft Cooking Conditions and Pulp Composition. PhD Dissertation, Royal Institute of Technology, Stockholm, Sweden, 2006.
27. Jiang, Z-H., Van Lierop, B., Berry, R., Tappi J. 83(1):167(2000).
28. Pedrazzi, C., Behavior of Eucalyptus Wood Xylans During Pulping, Bleaching, and Refining and their Impact on Pulp Quality. PhD Dissertation, Federal University of Viçosa, Brazil, 2009 (in press).
29. Danielsson, S., Xylan Reactions in Kraft Cooking and their Influence on Paper Sheet Properties. Licentiate Thesis, Royal Institute of Technology (KTH), Stockholm, Sweden (2006).