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A comparison of emerging technologies: hot chlorine dioxide bleaching versus hot acid treatment
KTH, Superseded Departments, Fibre and Polymer Technology.ORCID iD: 0000-0002-2900-4713
2004 (English)In: Paperi ja puu, ISSN 0031-1243, Vol. 86, no 1, 39-44 p.Article in journal (Refereed) Published
Abstract [en]

Hot acid treatment and hot chlorine dioxide bleaching are two emerging technologies within the field of bleaching of hardwood kraft pulp. In this study, these two technologies are thoroughly investigated and compared with each other, and also with a reference standard ECF-sequence. A 2-stage bleaching sequence is also investigated. Interestingly, this latter sequence proves to offer superior results regarding many of the investigated parameters, not least bleaching chemical consumption to a given ISO brightness. Moreover, these investigations show that the results of hot acid treatment followed by a chlorine dioxide treatment without intermediate washing on the one hand and hot chlorine dioxide bleaching on the other differ markedly in terms e.g. of bleaching chemical consumption, bleaching yield and development of tensile strength. The hot chlorine dioxide bleaching offers many benefits compared to hot acid treatment followed by chlorine dioxide bleaching.

Place, publisher, year, edition, pages
2004. Vol. 86, no 1, 39-44 p.
Keyword [en]
kraft pulp
National Category
Materials Engineering
URN: urn:nbn:se:kth:diva-23188ISI: 000189081600012ScopusID: 2-s2.0-1242332764OAI: diva2:341886
QC 20100525 QC 20111031Available from: 2010-08-10 Created: 2010-08-10 Last updated: 2011-10-31Bibliographically approved

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