University of Oulu

Werner Marcelo Goldmann, Juha Ahola, Marja Mikola, Juha Tanskanen, Formic acid aided hot water extraction of hemicellulose from European silver birch (Betula pendula) sawdust, Bioresource Technology, Volume 232, May 2017, Pages 176-182, ISSN 0960-8524,

Formic acid aided hot water extraction of hemicellulose from European silver birch (Betula pendula) sawdust

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Author: Goldmann, Werner Marcelo1; Ahola, Juha1; Mikola, Marja1;
Organizations: 1Chemical Process Engineering, Faculty of Technology, University of Oulu, P.O. Box 4300, Oulu 90014, Finland
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 0.5 MB)
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Language: English
Published: Elsevier, 2017
Publish Date: 2019-05-01


Hemicellulose has been extracted from birch (Betula pendula) sawdust by formic acid aided hot water extraction. The maximum amount of hemicellulose extracted was about 70 mol% of the total hemicellulose content at 170 °C, measured as the combined yield of xylose and furfural. Lower temperatures (130 and 140 °C) favored hemicellulose hydrolysis rather than cellulose hydrolysis, even though the total hemicellulose yield was less than at 170 °C. It was found that formic acid greatly increased the hydrolysis of hemicellulose to xylose and furfural at the experimental temperatures. The amount of lignin in the extract remained below the detection limit of the analysis (3 g/L) in all cases. Formic acid aided hot water extraction is a promising technique for extracting hemicellulose from woody biomass, while leaving a solid residue with low hemicellulose content, which can be delignified to culminate in the three main isolated lignocellulosic fractions: cellulose, hemicellulose, and lignin.

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Series: Bioresource technology
ISSN: 0960-8524
ISSN-E: 1873-2976
ISSN-L: 0960-8524
Volume: 232
Pages: 179 - 182
DOI: 10.1016/j.biortech.2017.02.032
Type of Publication: A1 Journal article – refereed
Field of Science: 215 Chemical engineering
Funding: This work was carried out thanks to funding from ERDF project PreBio (decision nr EURA 2014/162/09 02 01 01/2014/PPL).
Copyright information: © 2017. This manuscript version is made available under the CC-BY-NC-ND 4.0 license