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Comparative studies of kraft and kraft-borate pulping of black spruce

Date
2003
Author
Bujanovic, Biljana
Yilgor, Nural
Cameron, John
Metadata
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Abstract
Borate autocausticizing can either replace (total autocausticizing) or supplement the kraft lime cycle (partial autocausticizing). Partial autocausticizing has been recently commercialized in one kraft mill and is undergoing trials in several additional mills. Although it is known that borate reacts with lignin, little information is available on the effect of borates on kraft pulp yield or fibre properties. The objectives of this study were to determine the effect of sodium metaborate, which is the borate product from autocausticizing, on kraft pulping and on the properties of black spruce pulps. The major findings of this study suggest that borate increases yield, can decrease rejects, improves the selectivity of lignin removal, does not affect the delignification rate and can increase pulp viscosity at the same kappa number.
URI
http://hdl.handle.net/20.500.12627/103591
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İstanbul Üniversitesi Akademik Arşiv Sistemi (ilgili içerikte aksi belirtilmediği sürece) Creative Commons Alıntı-GayriTicari-Türetilemez 4.0 Uluslararası Lisansı ile lisanslanmıştır.

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Creative Commons Lisansı

İstanbul Üniversitesi Akademik Arşiv Sistemi (ilgili içerikte aksi belirtilmediği sürece) Creative Commons Alıntı-GayriTicari-Türetilemez 4.0 Uluslararası Lisansı ile lisanslanmıştır.

DSpace software copyright © 2002-2016  DuraSpace
Contact Us | Send Feedback
Theme by 
Atmire NV