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Calcium oxide as an additive for both conservation and improvement of the combustion properties of energy grass: A preliminary study
Swedish University of Agricultural Sciences, Department of Forest Biomaterials and Technology.
Swedish University of Agricultural Sciences, Department of Forest Biomaterials and Technology.
Swedish University of Agricultural Sciences, Department of Forest Biomaterials and Technology.
Swedish University of Agricultural Sciences, Department of Forest Biomaterials and Technology.
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Number of Authors: 6
2017 (English)In: Biomass and Bioenergy, ISSN 0961-9534, E-ISSN 1873-2909, Vol. 99, 1-10 p.Article in journal (Refereed) Published
Abstract [en]

Degradation of biomass is one of the major reasons for high costs of feedstock collection, transport, and storage, which is largely associated with biomass moisture and microbial activities. Our concept is to add calcium oxide (CaO) to the biomass already when it is collected and in its natural (wet) condition. When a suitable quantity of CaO is added to moistened biomass, an alkali microenvironment will be formed with a pH exceeding 9, based on the reaction CaO + H2O ↔ Ca(OH)2. As a consequence, microbial activities are largely inhibited. The Ca(OH)2 will then successively react with CO2, following the reaction Ca(OH)2 + CO2 ↔ CaCO3 + H2O. The CaCO3 will reside in the feedstock throughout the entire production chain and end up as an additive/sorbent to improve combustion by decreasing slagging. Two experiments were conducted and proved the concept works for at least reed canary grass, but, as expected, the strength of the effect was dependent on the CaO dosage and initial biomass moisture.

Place, publisher, year, edition, pages
2017. Vol. 99, 1-10 p.
National Category
Energy Engineering
Research subject
Energy Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-62178DOI: 10.1016/j.biombioe.2017.02.010ISI: 000399515400001Scopus ID: 2-s2.0-85013452746OAI: oai:DiVA.org:ltu-62178DiVA: diva2:1077223
Note

Validerad; 2017; Nivå 2; 2017-02-27 (andbra)

Available from: 2017-02-27 Created: 2017-02-27 Last updated: 2017-05-11Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
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