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Potassium and soot interaction in fast biomass pyrolysis at high temperatures

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Show simple item record Trubetskaya, Anna Larsen, Flemming Hofmann Shchukarev, Andrey Ståhl, Kenny Umeki, Kentaro 2018-08-07T14:05:53Z 2018
dc.description peer-reviewed en_US
dc.description.abstract This study aims to investigate the interaction between potassium and carbonaceous matrix of soot produced from wood and herbaceous biomass pyrolysis at high heating rates at 1250 C in a drop tube reactor. The in uence of soot carbon chemistry and potassium content in the original biomass on the CO2 reactivity was studied by thermogravimetric analysis. The XPS results showed that potassium incorporation with oxygen-containing surface groups in the soot matrix did not occur during high temperature pyrolysis. The potassium was mostly found as water-soluble salts such as KCl, KOH, KHCO3 and K2CO3 in herbaceous biomass soot. The low ash-containing pinewood soot was less reactive than the potassium rich herbaceous biomass soot, indicating a dominating role of potassium on the soot reactivity. However, the catalytic e ect of potassium on the reactivity remained the same after a certain potassium amount was incorporated in the soot matrix during pyrolysis. Raman spectroscopy results showed that the carbon chemistry of biomass soot also a ected the CO2 reactivity. The less reactive pinewood soot was more graphitic than herbaceous biomass soot samples with the disordered carbon structure. en_US
dc.language.iso eng en_US
dc.publisher Elsevier en_US
dc.relation.ispartofseries Fuel; 225, pp. 89-94
dc.rights This is the author’s version of a work that was accepted for publication in Fuel. 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, 2018, 225, pp. 89-94, en_US
dc.subject soot en_US
dc.subject potassium en_US
dc.subject biomass en_US
dc.subject fast pyrolysis en_US
dc.subject CO2 reactivity en_US
dc.title Potassium and soot interaction in fast biomass pyrolysis at high temperatures 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.fuel.2018.03.140
dc.contributor.sponsor Kempe Foundation, the Swedish strategic research program Bio4Energy en_US 2020-04-02
dc.embargo.terms 2020-04-02 en_US
dc.rights.accessrights info:eu-repo/semantics/openAccess en_US

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