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

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 proceeding › Conference article in proceedings › Scientific

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 language	English
Title of host publication	IPBC 2014 Grenoble
Subtitle of host publication	International Pulp Bleaching Conference
Editors	Gopal C. Goyal, Christine Chirat
Place of Publication	Grenoble
Pages	69-75
Publication status	Published - 2014
MoE publication type	B3 Non-refereed article in conference proceedings
Event	International pulp bleaching conference, IPBC 2014 - Grenoble, France Duration: 29 Oct 2014 → 31 Oct 2014

Conference

Conference	International pulp bleaching conference, IPBC 2014
Abbreviated title	IPBC 2014
Country/Territory	France
City	Grenoble
Period	29/10/14 → 31/10/14

Keywords

oxygen delignification
ozone
sulphur free
high kappa number
birch

Cite this

@inproceedings{3a1f5cff57e3439db081d3aabbe567ff,

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",

note = "HUO: Peer-reviewed: Abstract only CA2: BA3504; International pulp bleaching conference, IPBC 2014, IPBC 2014 ; Conference date: 29-10-2014 Through 31-10-2014",

year = "2014",

language = "English",

isbn = "978-1-0901-8800-6",

pages = "69--75",

editor = "Goyal, \{Gopal C.\} and Christine Chirat",

booktitle = "IPBC 2014 Grenoble",

}

Oxygen and ozone delignification of high kappa number sulphur-free soda hardwood pulps-pulp and papermaking properties. / Asikainen, Sari; Varhimo, Antero; Hultholm, Tom et al.
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 proceeding › Conference article in proceedings › Scientific

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

T2 - International pulp bleaching conference, IPBC 2014

Y2 - 29 October 2014 through 31 October 2014

ER -

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

Abstract

Conference

Keywords

Fingerprint

Cite this