Chlorine Dioxide Bleaching of Soda Rapeseed Pulp

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F17%3A39911270" target="_blank" >RIV/00216275:25310/17:39911270 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Chlorine Dioxide Bleaching of Soda Rapeseed Pulp
Original language description
Soda pulp cooked from rapeseed straw (Brassica napus L. convar. napus, winter line genotype Labrador) was subjected to a four-stage elemental chlorine-free bleaching under laboratory conditions. The bleaching sequence comprised three chlorine dioxide stages. The alkali extraction enhanced with hydrogen peroxide addition followed the first chlorine dioxide delignification. For comparison, kraft pulp cooked from a blend of spruce and pine was subjected to the same bleaching sequence D0EPD1D2. After each bleaching step, the optical and strength properties were measured. The preliminary results showed that bleachability of soda rapeseed pulp was lower in comparison with kraft softwood pulp for D0EPD1P bleaching sequence. The final brightness of 83.5 % ISO and 87.8 % ISO was achieved for soda and kraft pulps, respectively. However, the bleaching had a negative impact on the strength of soda rapeseed fibres. The zero-span breaking length decreased from 4.0 km to 3.3 km for unbleached and bleached soda pulps, respectively, while, for kraft softwood pulp, a decrease in fibre strength was not found.
Czech name
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Czech description
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Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Proceedings of the 5th International Conference on Chemical Technology
ISBN
978-80-86238-65-4
ISSN
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e-ISSN
neuvedeno
Number of pages
6
Pages from-to
"470 – 475"
Publisher name
Česká společnost průmyslové chemie
Place of publication
Praha
Event location
Mikulov
Event date
Apr 10, 2017
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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