Oxygen and ozone delignification of high kappa number sulphur-free soda hardwood pulps-pulp and papermaking properties

Sari Asikainen, Antero Varhimo, Tom Hultholm, Esa Hassinen

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

Abstract

Soda birch pulps cooked to kappa numbers 35 and 50 were delignified using oxygen and ozone. The following process modifications were studied: 1) Medium kappa number (35) soda cooking followed by oxygen/ozone delignification and final bleaching: O-O-A/D-Eop-D-P and O-Z-D-Eop-D-P. 2) High kappa number (50) soda cooking followed by oxygen/ozone delignification and final bleaching: O-Z-D-Eop-D-P and O-O-Z-D-Eop-D-P. The results showed that stopping the soda cook at higher kappa number than in traditional cooking and continuing the delignification with oxygen and ozone would be a promising process alternative to obtain paper grade pulp with adequate properties and sulphur free lignin as a by-product.
Original languageEnglish
Title of host publicationIPBC 2014 Grenoble
Subtitle of host publicationInternational Pulp Bleaching Conference
EditorsGopal C. Goyal, Christine Chirat
Place of PublicationGrenoble
Pages69-75
Publication statusPublished - 2014
MoE publication typeB3 Non-refereed article in conference proceedings
EventInternational pulp bleaching conference, IPBC 2014 - Grenoble, France
Duration: 29 Oct 201431 Oct 2014

Conference

ConferenceInternational pulp bleaching conference, IPBC 2014
Abbreviated titleIPBC 2014
CountryFrance
CityGrenoble
Period29/10/1431/10/14

Fingerprint

delignification
papermaking
ozone
hardwood
pulp
sulfur
oxygen
cooking
bleaching
Betula
lignin

Keywords

  • oxygen delignification
  • ozone
  • sulphur free
  • high kappa number
  • birch

Cite this

Asikainen, S., Varhimo, A., Hultholm, T., & Hassinen, E. (2014). Oxygen and ozone delignification of high kappa number sulphur-free soda hardwood pulps-pulp and papermaking properties. In G. C. Goyal, & C. Chirat (Eds.), IPBC 2014 Grenoble: International Pulp Bleaching Conference (pp. 69-75). Grenoble.
Asikainen, Sari ; Varhimo, Antero ; Hultholm, Tom ; Hassinen, Esa. / Oxygen and ozone delignification of high kappa number sulphur-free soda hardwood pulps-pulp and papermaking properties. IPBC 2014 Grenoble: International Pulp Bleaching Conference. editor / Gopal C. Goyal ; Christine Chirat. Grenoble, 2014. pp. 69-75
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title = "Oxygen and ozone delignification of high kappa number sulphur-free soda hardwood pulps-pulp and papermaking properties",
abstract = "Soda birch pulps cooked to kappa numbers 35 and 50 were delignified using oxygen and ozone. The following process modifications were studied: 1) Medium kappa number (35) soda cooking followed by oxygen/ozone delignification and final bleaching: O-O-A/D-Eop-D-P and O-Z-D-Eop-D-P. 2) High kappa number (50) soda cooking followed by oxygen/ozone delignification and final bleaching: O-Z-D-Eop-D-P and O-O-Z-D-Eop-D-P. The results showed that stopping the soda cook at higher kappa number than in traditional cooking and continuing the delignification with oxygen and ozone would be a promising process alternative to obtain paper grade pulp with adequate properties and sulphur free lignin as a by-product.",
keywords = "oxygen delignification, ozone, sulphur free, high kappa number, birch",
author = "Sari Asikainen and Antero Varhimo and Tom Hultholm and Esa Hassinen",
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Asikainen, S, Varhimo, A, Hultholm, T & Hassinen, E 2014, Oxygen and ozone delignification of high kappa number sulphur-free soda hardwood pulps-pulp and papermaking properties. in GC Goyal & C Chirat (eds), IPBC 2014 Grenoble: International Pulp Bleaching Conference. Grenoble, pp. 69-75, International pulp bleaching conference, IPBC 2014, Grenoble, France, 29/10/14.

Oxygen and ozone delignification of high kappa number sulphur-free soda hardwood pulps-pulp and papermaking properties. / Asikainen, Sari; Varhimo, Antero; Hultholm, Tom; Hassinen, Esa.

IPBC 2014 Grenoble: International Pulp Bleaching Conference. ed. / Gopal C. Goyal; Christine Chirat. Grenoble, 2014. p. 69-75.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

TY - GEN

T1 - Oxygen and ozone delignification of high kappa number sulphur-free soda hardwood pulps-pulp and papermaking properties

AU - Asikainen, Sari

AU - Varhimo, Antero

AU - Hultholm, Tom

AU - Hassinen, Esa

N1 - HUO: Peer-reviewed: Abstract only CA2: BA3504

PY - 2014

Y1 - 2014

N2 - Soda birch pulps cooked to kappa numbers 35 and 50 were delignified using oxygen and ozone. The following process modifications were studied: 1) Medium kappa number (35) soda cooking followed by oxygen/ozone delignification and final bleaching: O-O-A/D-Eop-D-P and O-Z-D-Eop-D-P. 2) High kappa number (50) soda cooking followed by oxygen/ozone delignification and final bleaching: O-Z-D-Eop-D-P and O-O-Z-D-Eop-D-P. The results showed that stopping the soda cook at higher kappa number than in traditional cooking and continuing the delignification with oxygen and ozone would be a promising process alternative to obtain paper grade pulp with adequate properties and sulphur free lignin as a by-product.

AB - Soda birch pulps cooked to kappa numbers 35 and 50 were delignified using oxygen and ozone. The following process modifications were studied: 1) Medium kappa number (35) soda cooking followed by oxygen/ozone delignification and final bleaching: O-O-A/D-Eop-D-P and O-Z-D-Eop-D-P. 2) High kappa number (50) soda cooking followed by oxygen/ozone delignification and final bleaching: O-Z-D-Eop-D-P and O-O-Z-D-Eop-D-P. The results showed that stopping the soda cook at higher kappa number than in traditional cooking and continuing the delignification with oxygen and ozone would be a promising process alternative to obtain paper grade pulp with adequate properties and sulphur free lignin as a by-product.

KW - oxygen delignification

KW - ozone

KW - sulphur free

KW - high kappa number

KW - birch

M3 - Conference article in proceedings

SN - 978-1-0901-8800-6

SP - 69

EP - 75

BT - IPBC 2014 Grenoble

A2 - Goyal, Gopal C.

A2 - Chirat, Christine

CY - Grenoble

ER -

Asikainen S, Varhimo A, Hultholm T, Hassinen E. Oxygen and ozone delignification of high kappa number sulphur-free soda hardwood pulps-pulp and papermaking properties. In Goyal GC, Chirat C, editors, IPBC 2014 Grenoble: International Pulp Bleaching Conference. Grenoble. 2014. p. 69-75