DELIGNIFICATION OF BAGASSE WITH ACETIC-ACID AND OZONE .2. OZONE STAGE

Authors
CONTRERAS H NAGIEB ZA SANJUAN R
Citation
H. Contreras et al., DELIGNIFICATION OF BAGASSE WITH ACETIC-ACID AND OZONE .2. OZONE STAGE, Polymer-plastics technology and engineering, 36(5), 1997, pp. 673-680
Citations number
4
Categorie Soggetti
Polymer Sciences
Journal title
Polymer-plastics technology and engineering → ACNP
ISSN journal
03602559
Volume
36
Issue
5
Year of publication
1997
Pages
673 - 680
Database
ISI
SICI code
0360-2559(1997)36:5<673:DOBWAA>2.0.ZU;2-8
Abstract
Ozone gas was applied as second stage in delignification of bagasse pu lp obtained with acetic acid. The kappa number was reduced from 44 to 10 with 3% ozone (based on dry pulp). Because bagasse was pulped with an aqueous solution of acetic acid (80% volume), selectivity of the oz one stage was favored and does not necessary acidulate pulp, which had pH = 1.7. Consistency of pulp for ozonation was 40% and this stage wa s carried out at room temperature. Physical properties of pulp were im proved with ozone treatment.