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Hydrothermal pretreatment of wood by mild steam explosion and hot water extraction
KTH, School of Chemical Science and Engineering (CHE), Centres, Wallenberg Wood Science Center. Chalmers University of Technology, Sweden.
KTH, School of Chemical Science and Engineering (CHE), Centres, Wallenberg Wood Science Center. Chalmers University of Technology, Sweden.
2017 (English)In: Bioresource Technology, ISSN 0960-8524, E-ISSN 1873-2976, Vol. 241, 120-126 p.Article in journal (Refereed) Published
Abstract [en]

The aim of this work was to compare the two most common hydrothermal pre-treatments for wood – mild steam explosion and hot water extraction – both with the prospect of enabling extraction of hemicelluloses and facilitating further processing. Although both involve autohydrolysis of the lignocellulosic tissue, they are performed under different conditions: the most prominent difference is the rapid, disintegrating, discharge employed in the steam explosion opening up the structure. In this comparative study, the emphasis was placed on local composition of the pre-treated wood chips (of industrially relevant size). The results show that short hot water extraction treatments lead to significant variations in the local composition within the wood chips, while steam explosion accomplishes a comparably more even removal of hemicelluloses due to the advective mass transport during the explosion step.

Place, publisher, year, edition, pages
Elsevier, 2017. Vol. 241, 120-126 p.
Keyword [en]
Autohydrolysis, Hot water extraction, Local properties, Pre-treatment, Steam explosion
National Category
Wood Science
Identifiers
URN: urn:nbn:se:kth:diva-209494DOI: 10.1016/j.biortech.2017.05.061Scopus ID: 2-s2.0-85019595719OAI: oai:DiVA.org:kth-209494DiVA: diva2:1113020
Note

QC 20170621

Available from: 2017-06-21 Created: 2017-06-21 Last updated: 2017-06-21Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
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  • Other locale
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