Upgrading birch kraft pulp to dissolving pulp and xylo-oligosaccharides by water post-hydrolysis

Marc Borrega, Herbert Sixta

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Abstract

Water post-hydrolysis of birch Kraft pulps in a flow-through reactor allows their conversion to viscose-grade pulps while recoverying the extracted sugars as xylooligosaccharides (XOS). Up to 240 ºC, increasing extraction temperature favors the removal of xylan over the degradation of cellulose. Beyond 240 ºC, increasing temperature has negligible effects on the selectivity of xylan removal. The recovery of XOS from the hydrolysates increases with flow rate due to limited formation of sugar degradation products.
Original languageEnglish
Title of host publicationNWBC 2015
Subtitle of host publication6th Nordic Wood Biorefinery Conference
EditorsEemeli Hytönen
Place of PublicationEspoo
PublisherVTT Technical Research Centre of Finland
Pages397-401
ISBN (Electronic)978-951-38-8353-9
ISBN (Print)978-951-38-8352-2
Publication statusPublished - 2015
MoE publication typeA4 Article in a conference publication
Event6th Nordic Wood Biorefinery Conference, NWBC 2015 - Helsinki, Finland
Duration: 20 Oct 201522 Oct 2015

Publication series

SeriesVTT Technology
Number233
ISSN2242-1211

Conference

Conference6th Nordic Wood Biorefinery Conference, NWBC 2015
Abbreviated titleNWBC 2015
CountryFinland
CityHelsinki
Period20/10/1522/10/15

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