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Improvement of Wood Fuel Pellet Quality Using Sustainable Sugar Additives
Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Chemical Sciences.ORCID iD: 0000-0003-2528-4399
Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Chemical Sciences.ORCID iD: 0000-0002-9707-8896
Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Chemical Sciences.ORCID iD: 0000-0002-0380-3533
2016 (English)In: BioResources, ISSN 1930-2126, E-ISSN 1930-2126, Vol. 11, no 2, p. 3373-3383Article in journal (Refereed) Published
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Text
Abstract [en]

The global production and use of wood fuel pellets has increased significantly in recent years. The raw material and the energy required to dry it are the main production costs. Therefore, it is crucial to minimize energy consumption, production costs, and the environmental impact associated with wood pellets. However, these changes should not negatively affect the quality of the pellets. One way to achieve these goals is to use additives. This work investigates how different types of sugar additives affect both the energy needed by the pellet press and the durability and oxidation of the produced pellets. When sugar was used as an additive, the energy use was practically unaffected. When molasses and SSL were added, a small decrease in energy use was observed (6 to 8%) for admixtures up to 1 wt.%; however, when more molasses was added, the energy use increased. Using these additives increased the bulk density (7 to 15 %) and durability (10 to 20 %) of the pellets. The storage of the pellets also caused a small increase in durability (1 to 3 %). Volatile organic compounds were produced as oxidation peaks within the first two months of storage; thereafter, the peaks tapered off.

Place, publisher, year, edition, pages
2016. Vol. 11, no 2, p. 3373-3383
Keywords [en]
Wood fuel pellet, Additives, Molasses, White sugar, Spent sulphite liquor, Energy efficiency, Durability, Storage
National Category
Paper, Pulp and Fiber Technology
Research subject
Environmental and Energy Systems
Identifiers
URN: urn:nbn:se:kau:diva-44549ISI: 000375786700031OAI: oai:DiVA.org:kau-44549DiVA, id: diva2:950967
Available from: 2016-08-04 Created: 2016-08-04 Last updated: 2019-07-11Bibliographically approved

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Stahl, MagnusBerghel, JonasGranstrom, Karin

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