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Compression of Biomass Substances-A Study on Springback Effects and Color Formation in Pellet Manufacture
Karlstad Univ, Dept Engn & Chem Sci, Environm & Energy Syst, SE-65188 Karlstad, Sweden..ORCID iD: 0000-0003-0446-4251
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Fibre- and Polymer Technology. KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Centres, Wallenberg Wood Science Center.ORCID iD: 0000-0002-7880-3888
Karlstad Univ, Dept Engn & Chem Sci, Chem Engn, SE-65188 Karlstad, Sweden..
Karlstad Univ, Dept Engn & Chem Sci, Environm & Energy Syst, SE-65188 Karlstad, Sweden..
2019 (English)In: Applied Sciences, E-ISSN 2076-3417, Vol. 9, no 20Article in journal (Refereed) Published
Abstract [en]

In order to increase the use of a variated raw material base for pellet production with a maintained density level, knowledge of the biomaterials' ability to counteract any springback effects is essential. In this study, the springback effects were investigated for single press produced pellets from cellulose, hemicelluloses, pectin, and two woods at different moisture contents. The change in pellet coloring was also tested through a spectrophotometer for both xylan and carboxymethyl cellulose (CMC) pellets. The results show that the density of xylan pellets is much higher than glucomannan, for both green and cured pellets, and that the length of the pellets, as well as springback contribution, differ between the hemicelluloses. The study also presents results showing that both xylan and CMC pellets have a mutually identical spectrum and that the changes in the structure of xylan are not only related to moisture content, but are also pressure-related. The study also postulates that the color difference of the xylan pellets is a result of physical changes in the structure, as opposed to being of a chemical nature.

Place, publisher, year, edition, pages
MDPI , 2019. Vol. 9, no 20
Keywords [en]
biomass pellets, densification, glucomannan, xylan, hemicelluloses
National Category
Paper, Pulp and Fiber Technology
Identifiers
URN: urn:nbn:se:kth:diva-264885DOI: 10.3390/app9204302ISI: 000496269400105Scopus ID: 2-s2.0-85074204651OAI: oai:DiVA.org:kth-264885DiVA, id: diva2:1380152
Note

QC 20191218

Available from: 2019-12-18 Created: 2019-12-18 Last updated: 2019-12-18Bibliographically approved

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Lindén, Pär

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