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dc.contributor.authorTrubetskaya, Anna
dc.contributor.authorJensen, Peter Arendt
dc.contributor.authorJensen, Anker Degn
dc.contributor.authorSteibel, Markus
dc.contributor.authorSpliethoff, Hartmut
dc.contributor.authorGlarborg, Peter
dc.identifier.citationTrubetskaya, A., Jensen, P. A., Jensen, A. D., Steibel, M., Spliethoff, H., & Glarborg, P. (2015). Influence of fast pyrolysis conditions on yield and structural transformation of biomass chars. Fuel Processing Technology, 140, 205-214. doi:
dc.description.abstractFast pyrolysis of biomass (wood, straw, rice husk) and its major components (cellulose, hemicellulose, lignin) was conducted in a wire mesh reactor. The aim of this study was to understand the influence of temperature (350–1400 ∘ C), heating rate (10–3000 ∘ C/s), particle size (0.05–2 mm) and holding time (1–4 s) on the char morphology and char yield. Scanning electron microscopy (SEM) and elemental analysis were conducted to determine the effect of operating conditions on char softening and melting during pyrolysis. The char yield decreased with heating rate for rates ≤ 600 ∘ C/s; above this value a similar biomass char yield was obtained. The potassium content affected the char yield stronger than other minerals, while the distribution of the three major biomass constituents (cellulose, hemicellulose, lignin) affected the char yield only to a minor degree. Moreover, it was found that the heat treatment temperature had a larger influence on the char yield than the heating rate. Scanning electron microscopy indicated different types of biomass char plasticization influenced by the applied temperatures, heating rates, particle sizes and holding times, except for the rice husk char that formed chars with a structure similar to the parental fuel at all conditions. The less severe morphological changes of rice husk char were attributed to a high silica content.en_IE
dc.description.sponsorshipThe authors would like to acknowledge the financial support that they received for this project from Danish Strategic Research Council, DONG Energy and Vattenfall. We also thank DTU Danish Polymer Center, DTU CEN, and Jesper Harholt (University of Copenhagen) for assisting with hemicellulose purification, microscopy measurements, and biomass compositional analysis.en_IE
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Ireland
dc.subjectFast pyrolysisen_IE
dc.subjectWire mesh reactoren_IE
dc.subjectHeating rateen_IE
dc.subjectChar plasticizationen_IE
dc.titleInfluence of fast pyrolysis conditions on yield and structural transformation of biomass charsen_IE
dc.local.contactAnna Trubetskaya, Mechanical Engineering, College Of Engineering And Informatics, Nui Galway. - Email:

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