Journal of Korea Technical Association of The Pulp and Paper Industry (펄프종이기술)

Korea Technical Association of the Pulp and Paper Industry (한국펄프종이공학회)
권호 표지

The Fate of Aspen Extractives in Kraft Pulping and Oxygen Delignification

  • Shin, Soo-Jeong (Faculty of Paper Science and Engineering, State University of New York, College of Environmental Science and Forestry(SUNY-ESF)) ;
  • Lai, Yuan-Zong (Faculty of Paper Science and Engineering, State University of New York, College of Environmental Science and Forestry(SUNY-ESF))
  • Published : 2005.09.30
Download PDF
⟨ Previous Next ⟩

Abstract

The compositions of residual extractives in woodmeal, unbleached and oxygen-delignified aspen kraft pulps were investigated with gas chromatography(GC) and gas chromatography-mass spectrometry (GC-MS) with focus on fate of extractives in kraft pulping and oxygen delignification. Steryl esters and shorter retention time (shorter than palmitic acid) extractives were main extractives in aspen woodmeal. Shorter retention time extractives were well removed in kraft pulping. Sterol esters were hydrolyzed to sterols and fatty acids. Sterols and fatty acids were two major extractives classes in unbleached kraft pulps. Linoleic acid was main fatty acids in unbleached pulps compared with palmitic acid which is generally found in aspen woodmeal. Sterolsand fatty acids were also two major extractives classes in oxygen-delignified kraft pulps. However, linoleic acid was well removed in oxygen delignification.

Keywords

References

  1. Affleck, R.R and Ryan, R.G., Pitch control in a kraft pulp mill. Pulp Paper Mag. Can. 70(12): T563 (1969)
  2. Shin, S.-J., Schroeder, L.R. and Lai, Y.-Z., Impact of residual extractives on lignin determination in kraft pulps. J. Wood Chem. & Technol, 24(2):139 (2004)
  3. TAPPI Test Methods, Classical Test Method T204 cm-97, Solvent extractives of wood and pulp, 2000, TAPPI Press, Atlanta
  4. Fernandez, M.P., Watson, P.A., and Breuil, C., Gas Chromatography-Mass Spectrometry Method for the Simultaneous Determination of Wood Extractive Compounds in Quaking Aspen. J. Chromatogr. A 922: 225 (2001) https://doi.org/10.1016/S0021-9673(01)00948-7
  5. Gutierrez, A., del Rio, J. C., Gonzalez-Via, F.J. and Martin, F., Analysis of lipophilic extractives from wood and pitch deposits by solid-phase extraction and gas chromatography. J. Chromatography A 823:449 (1998) https://doi.org/10.1016/S0021-9673(98)00356-2
  6. Dunlop-Jones, N.; Jialing, H. and Allen, L.H., An analysis of the acetone extractives of the wood and bark from fresh trembling aspen: Implications for deresination and pitch control, J. Pulp Pap. Sci. 17(2): J60 (1991)
  7. Hrutfiord,B.F. and Hopley,S.M., 'Reactions of terpenes, resin, and fatty acids in oxygen-alkali delignification system', In Chemistry of Delignification with Oxygen, Ozone, and Peroxide Proceeding(Raleigh, USA) p.247 (1976)