Effect of pulp surfaces on enzyme-aided bleaching of kraft pulps

Anna Suurnäkki, Anette Heijnesson, Johanna Buchert, Ulla Westermark, Liisa Viikari

Research output: Contribution to journalArticleScientificpeer-review

19 Citations (Scopus)

Abstract

The effects of fibre surfaces on pulp bleachability and on enzyme-aided bleaching were studied by bleaching pine and birch kraft pulps, fibres [i.e. pulps with fines (<100 μm) removed] and mechanically peeled fibres with one stage of hydrogen peroxide treatment. The removal of the primary fines from the pulps resulted in a higher brightness after bleaching. The removal of the outer surface of the pine kraft fibres decreased the brightness after bleaching, whereas no effect was observed with the birch kraft fibres. The xylanase treatment increased the bleachability of both types of pulps, fibres and mechanically peeled fibres, suggesting that its effect on bleaching is not only a surface effect but a broader phenomenon. In the mannanase-aided bleaching of the pine kraft pulp, the presence of the outer surface of the fibres hindered the enzymatic bleach-boosting effect. A positive effect of mannanase on the bleachability of the pine kraft pulp was observed only after the removal of the outer surface of the fibres.
Original languageEnglish
Pages (from-to)J91-J96
Number of pages6
JournalJournal of Pulp and Paper Science
Volume22
Issue number3
Publication statusPublished - 1996
MoE publication typeA1 Journal article-refereed

Fingerprint

Kraft pulp
Bleaching
Pulp
Enzymes
Fibers
Luminance
Hydrogen peroxide
Hydrogen Peroxide

Cite this

Suurnäkki, A., Heijnesson, A., Buchert, J., Westermark, U., & Viikari, L. (1996). Effect of pulp surfaces on enzyme-aided bleaching of kraft pulps. Journal of Pulp and Paper Science, 22(3), J91-J96.
Suurnäkki, Anna ; Heijnesson, Anette ; Buchert, Johanna ; Westermark, Ulla ; Viikari, Liisa. / Effect of pulp surfaces on enzyme-aided bleaching of kraft pulps. In: Journal of Pulp and Paper Science. 1996 ; Vol. 22, No. 3. pp. J91-J96.
@article{3e15b4251bf5415381d8ff948a840cab,
title = "Effect of pulp surfaces on enzyme-aided bleaching of kraft pulps",
abstract = "The effects of fibre surfaces on pulp bleachability and on enzyme-aided bleaching were studied by bleaching pine and birch kraft pulps, fibres [i.e. pulps with fines (<100 μm) removed] and mechanically peeled fibres with one stage of hydrogen peroxide treatment. The removal of the primary fines from the pulps resulted in a higher brightness after bleaching. The removal of the outer surface of the pine kraft fibres decreased the brightness after bleaching, whereas no effect was observed with the birch kraft fibres. The xylanase treatment increased the bleachability of both types of pulps, fibres and mechanically peeled fibres, suggesting that its effect on bleaching is not only a surface effect but a broader phenomenon. In the mannanase-aided bleaching of the pine kraft pulp, the presence of the outer surface of the fibres hindered the enzymatic bleach-boosting effect. A positive effect of mannanase on the bleachability of the pine kraft pulp was observed only after the removal of the outer surface of the fibres.",
author = "Anna Suurn{\"a}kki and Anette Heijnesson and Johanna Buchert and Ulla Westermark and Liisa Viikari",
note = "Project code: BEL3015",
year = "1996",
language = "English",
volume = "22",
pages = "J91--J96",
journal = "J-FOR: Journal of Science & Technology for Forest Products and Processes",
issn = "1927-6311",
number = "3",

}

Suurnäkki, A, Heijnesson, A, Buchert, J, Westermark, U & Viikari, L 1996, 'Effect of pulp surfaces on enzyme-aided bleaching of kraft pulps', Journal of Pulp and Paper Science, vol. 22, no. 3, pp. J91-J96.

Effect of pulp surfaces on enzyme-aided bleaching of kraft pulps. / Suurnäkki, Anna; Heijnesson, Anette; Buchert, Johanna; Westermark, Ulla; Viikari, Liisa.

In: Journal of Pulp and Paper Science, Vol. 22, No. 3, 1996, p. J91-J96.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Effect of pulp surfaces on enzyme-aided bleaching of kraft pulps

AU - Suurnäkki, Anna

AU - Heijnesson, Anette

AU - Buchert, Johanna

AU - Westermark, Ulla

AU - Viikari, Liisa

N1 - Project code: BEL3015

PY - 1996

Y1 - 1996

N2 - The effects of fibre surfaces on pulp bleachability and on enzyme-aided bleaching were studied by bleaching pine and birch kraft pulps, fibres [i.e. pulps with fines (<100 μm) removed] and mechanically peeled fibres with one stage of hydrogen peroxide treatment. The removal of the primary fines from the pulps resulted in a higher brightness after bleaching. The removal of the outer surface of the pine kraft fibres decreased the brightness after bleaching, whereas no effect was observed with the birch kraft fibres. The xylanase treatment increased the bleachability of both types of pulps, fibres and mechanically peeled fibres, suggesting that its effect on bleaching is not only a surface effect but a broader phenomenon. In the mannanase-aided bleaching of the pine kraft pulp, the presence of the outer surface of the fibres hindered the enzymatic bleach-boosting effect. A positive effect of mannanase on the bleachability of the pine kraft pulp was observed only after the removal of the outer surface of the fibres.

AB - The effects of fibre surfaces on pulp bleachability and on enzyme-aided bleaching were studied by bleaching pine and birch kraft pulps, fibres [i.e. pulps with fines (<100 μm) removed] and mechanically peeled fibres with one stage of hydrogen peroxide treatment. The removal of the primary fines from the pulps resulted in a higher brightness after bleaching. The removal of the outer surface of the pine kraft fibres decreased the brightness after bleaching, whereas no effect was observed with the birch kraft fibres. The xylanase treatment increased the bleachability of both types of pulps, fibres and mechanically peeled fibres, suggesting that its effect on bleaching is not only a surface effect but a broader phenomenon. In the mannanase-aided bleaching of the pine kraft pulp, the presence of the outer surface of the fibres hindered the enzymatic bleach-boosting effect. A positive effect of mannanase on the bleachability of the pine kraft pulp was observed only after the removal of the outer surface of the fibres.

M3 - Article

VL - 22

SP - J91-J96

JO - J-FOR: Journal of Science & Technology for Forest Products and Processes

JF - J-FOR: Journal of Science & Technology for Forest Products and Processes

SN - 1927-6311

IS - 3

ER -

Suurnäkki A, Heijnesson A, Buchert J, Westermark U, Viikari L. Effect of pulp surfaces on enzyme-aided bleaching of kraft pulps. Journal of Pulp and Paper Science. 1996;22(3):J91-J96.