NDLI: Application of peroxymonosulfuric acid as a modification of the totally chlorine-free bleaching of acacia wood prehydrolysis-kraft pulp

Content Provider	Springer Nature Link
Author	Rizaluddin, Andri Taufick Liu, Qiang Panggabean, Posma R. Ohi, Hiroshi Nakamata, Keiichi
Copyright Year	2015
Abstract	The totally chlorine-free (TCF) bleaching process avoids the generation of organochlorine substances. In this study, the application of peroxymonosulfuric acid (H2SO5: Psa) to TCF bleaching was proposed as a modification of the bleaching process of hardwood prehydrolysis-kraft pulp. Acacia mearnsii pulps were treated by oxygen bleaching, followed by Psa treatment, ozone bleaching, alkali extraction, and finally, hydrogen peroxide bleaching. The Psa treatment was conducted with 10 % pulp consistency at pH 3 and 70 °C. The use of Psa increased the removal of hexenuronic acid from the pulp and improved pulp brightness. After the final hydrogen peroxide bleaching, pulp brightness increased to 86.0 % ISO with a 0.6 % Psa dosage. The Psa treatment showed better selectivity, i.e., kappa number decrement per unit of viscosity, compared with ozone bleaching. A dosage of 0.2 % Psa afforded a 3.4 kappa number decrement with a 10.9 cP viscosity loss, while ozone treatment with a dosage of 0.5 % resulted in a 2.6 kappa number decrement with a 12.5 cP viscosity loss. The results showed that the Psa treatment can enhance pulp quality in terms of brightness and reduce ozone consumption, which improves the TCF bleaching process.
Starting Page	292
Ending Page	298
Page Count	7
File Format	PDF
ISSN	14350211
Journal	Journal of Wood Science
Volume Number	61
Issue Number	3
e-ISSN	16114663
Language	English
Publisher	Springer Japan
Publisher Date	2015-02-17
Publisher Place	Tokyo
Access Restriction	Subscribed
Subject Keyword	Peroxymonosulfuric acid Prehydrolysis-kraft pulp Totally chlorine-free bleaching Hexenuronic acid Hardwood pulp Wood Science & Technology Materials Science Characterization and Evaluation of Materials
Content Type	Text
Resource Type	Article
Subject	Biomaterials Forestry

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Application of peroxymonosulfuric acid as a modification of the totally chlorine-free bleaching of acacia wood prehydrolysis-kraft pulp

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