A1 Journal article (refereed)
Acid-catalyzed mechanocatalytic pretreatment to improve sugar release from birch sawdust : Structural and chemical aspects (2022)


Lempiäinen, H., Lappalainen, K., Mikola, M., Tuuttila, T., Hu, T., & Lassi, U. (2022). Acid-catalyzed mechanocatalytic pretreatment to improve sugar release from birch sawdust : Structural and chemical aspects. Catalysis Today, 397-399(550-561). https://doi.org/10.1016/j.cattod.2021.06.015


JYU authors or editors


Publication details

All authors or editorsLempiäinen, Henna; Lappalainen, Katja; Mikola, Marja; Tuuttila, Tero; Hu, Tao; Lassi, Ulla

Journal or seriesCatalysis Today

ISSN0920-5861

eISSN1873-4308

Publication year2022

Volume397-399

Issue number550-561

PublisherElsevier BV

Publication countryNetherlands

Publication languageEnglish

DOIhttps://doi.org/10.1016/j.cattod.2021.06.015

Publication open accessOpenly available

Publication channel open accessPartially open access channel

Publication is parallel published (JYX)https://jyx.jyu.fi/handle/123456789/77505


Abstract

This study examined acid-catalyzed mechanocatalytic pretreatment of birch sawdust without a separate impregnation step. Catalyst amount and pretreatment time were the key variables. Pretreated material was mixed with water for hydrolysis (100 °C, 60 min). The efficient release of total reducing sugars from birch sawdust is significant to the path towards biofuels and biochemicals. Based on the results, the structure and surface of birch sawdust changed as a function of mechanocatalytic pretreatment. Milling time caused significant transformations in birch structure and also increased the yields of reducing sugars. The highest yield of total reducing sugar from pretreated sawdust was 23.0% after 30 min of hydrolysis with 1.0 mmol/g acid catalyst, whereas the highest glucose yield was 23.8 g/kg (1.5 mmol/g catalyst, 60 min) and the highest xylose yield was 37.5 g/kg (1.0 mmol/catalyst, 30 min). Overall, acid-catalyzed mechanocatalytic treatment seems to improve sugar yields from birch.


Keywordsbiomass (industry)biorefineriessugarssawdustbirchespreliminary treatmentgrindingcatalysiscatalystssulphuric acid

Free keywordsbirch; mechanocatalytic pretreatment; ball milling; sulfuric acid; catalyst; sawdust


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Ministry reportingYes

Reporting Year2022

JUFO rating1


Last updated on 2024-03-04 at 19:55