Biobleaching of softwood kraft pulp with manganese peroxidase

Katsunobu Ehara, Yuji Tsutsumi, Tomoaki Nishida

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Unbleached softwood kraft pulp (SWKP) and hardwood kraft pulp(HWKP) were biobleached with partially purified manganese peroxidase(MnP). Though a remarkable brightness increase of SWKP was not obtained by a single MnP treatment, repeated MnP treatment combined with alkaline extraction gave a significant delignification and brightening of SWKP. Total effective chlorine required to obtain a pulp of 85% ISO brightness by chemical bleaching after the repeated MnP treatment was reduced 51.4%, 66.2%, and 69.0% for normal-lignin-content SWKP, low-lignin-content SWKP, and HWKP, respectively, compared to conventional bleaching process without introducing MnP treatment.

Original languageEnglish
Title of host publicationPoster Presentations
Editors Anon
PublisherCanadian Pulp & Paper Assoc
Pages26-1/26
Volume2
Publication statusPublished - 1997
Externally publishedYes
EventProceedings of the 1997 9th International Symposium on Wood and Piping Chemistry, ISWPC. Part 1 (of 2) - Montreal, Can
Duration: Jun 9 1997Jun 12 1997

Other

OtherProceedings of the 1997 9th International Symposium on Wood and Piping Chemistry, ISWPC. Part 1 (of 2)
CityMontreal, Can
Period6/9/976/12/97

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)

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  • Cite this

    Ehara, K., Tsutsumi, Y., & Nishida, T. (1997). Biobleaching of softwood kraft pulp with manganese peroxidase. In Anon (Ed.), Poster Presentations (Vol. 2, pp. 26-1/26). Canadian Pulp & Paper Assoc.