Biomass pyrolysis devolatilization kinetics of herbaceous and woody feedstocks

dc.contributor.author Peterson, Chad A.
dc.contributor.author Hornbuckle, Malachi K.
dc.contributor.department Mechanical Engineering
dc.contributor.department Agricultural and Biosystems Engineering
dc.contributor.department Chemical and Biological Engineering
dc.contributor.department Bioeconomy Institute
dc.date.accessioned 2021-12-30T18:44:40Z
dc.date.available 2021-12-30T18:44:40Z
dc.date.issued 2022-02
dc.description.abstract Devolatilization kinetics were determined using a modified micropyrolyzer reactor for several biomass feedstocks: switchgrass, corn stover, red oak, and pine. The micropyrolyzer was directly coupled to a flame ionization detector (FID) to track the release of volatiles from the biomass. Time series data from these experiments was analyzed to determine apparent devolatilization rates. Care was taken to assure the experiments were isothermal and kinetically limited calculating a Biot number less than 0.1 and pyrolysis numbers greater than 10, which simplifies the derivation of devolatilization rates. A single, first order reaction was able to model devolatilization rates at temperatures up to 500 °C. No correlation was found between the inorganic content of the biomass and its rate of devolatilization. Apparent activation energies were in the range of 54.9–88.4 kJ mol−1. The rate coefficient at 500 °C was calculated as 1.90–5.14 s−1 for the four feedstocks.
dc.description.comments This is a manuscript of an article published as Peterson, Chad A., Malachi K. Hornbuckle, and Robert C. Brown. "Biomass pyrolysis devolatilization kinetics of herbaceous and woody feedstocks." Fuel Processing Technology 226 (2022): 107068. DOI: 10.1016/j.fuproc.2021.107068. Copyright 2021 Elsevier B.V. Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0). Posted with permission.
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/ywAbnZDv
dc.language.iso en_US
dc.publisher Elsevier
dc.source.uri https://doi.org/10.1016/j.fuproc.2021.107068 *
dc.subject Pyrolysis
dc.subject Biomass
dc.subject Devolatilization rate
dc.subject Chemical kinetics
dc.subject.disciplines DegreeDisciplines::Engineering::Mechanical Engineering::Energy Systems
dc.title Biomass pyrolysis devolatilization kinetics of herbaceous and woody feedstocks
dc.type Article
dspace.entity.type Publication
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