THE INFLUENCE OF SULFIDITY IN KRAFT PULPING ON THE NATURE OF RESIDUALLIGNIN

Authors
YANG RM LAI YZ
Citation
Rm. Yang et Yz. Lai, THE INFLUENCE OF SULFIDITY IN KRAFT PULPING ON THE NATURE OF RESIDUALLIGNIN, Journal of wood chemistry and technology, 17(4), 1997, pp. 383-390
Citations number
10
Journal title
Journal of wood chemistry and technology → ACNP
ISSN journal
02773813
Volume
17
Issue
4
Year of publication
1997
Pages
383 - 390
Database
ISI
SICI code
0277-3813(1997)17:4<383:TIOSIK>2.0.ZU;2-7
Abstract
The influence of sulfidity in kraft pulping of Norway spruce chips on the characteristics of residual lignin has been examined at two levels 25 and 40%. Comparing with the reference kraft cook at similar kappa number, the high sulfidity pulp lignin displayed a significantly lower phenolic hydroxyl group content, and a lower response to O-2 delignif ication, but it gave a slightly higher yield of nitrobenzene oxidation products, and was more responsive to a neutral sulfite treatment.