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Influence of fast pyrolysis conditions on yield and structural transformation of biomass chars

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Show simple item record Trubetskaya, Anna Jensen, Peter Arendt Jensen, Anker Degn Steibel, Markus Spliethoff, Hartmut Glarborg, Peter 2018-08-07T08:43:44Z 2018-08-07T08:43:44Z 2015
dc.description peer-reviewed en_US
dc.description.abstract Fast 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_US
dc.language.iso eng en_US
dc.publisher Elsevier en_US
dc.relation.ispartofseries Fuel Processing Technology;140, pp. 205-214
dc.rights This is the author’s version of a work that was accepted for publication in Food Processing Technology. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Fuel Processing Technology, 2015, 140, pp. 205-214, en_US
dc.subject fast pyrolysis en_US
dc.subject wire mesh reactor en_US
dc.subject heating rate en_US
dc.subject char plasticization en_US
dc.subject alkali en_US
dc.title Influence of fast pyrolysis conditions on yield and structural transformation of biomass chars en_US
dc.type info:eu-repo/semantics/article en_US
dc.type.supercollection all_ul_research en_US
dc.type.supercollection ul_published_reviewed en_US
dc.identifier.doi 10.1016/j.fuproc.2015.08.034
dc.contributor.sponsor Danish Strategic Research Council en_US
dc.rights.accessrights info:eu-repo/semantics/openAccess en_US

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