Determination of kinetic parameters and thermodynamic properties for Ash (Fraxinus) wood sawdust slow pyrolysis by thermogravimetric analysis

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dc.contributor.authorNyombi, Antony
dc.contributor.authorWilliams, Mike
dc.contributor.authorWessling, Roland
dc.date.accessioned2019-12-03T14:58:21Z
dc.date.available2019-12-03T14:58:21Z
dc.date.issued2018-08-15
dc.description.abstractAsh (Fraxinus) wood sawdust pyrolysis under nitrogen was conducted using 2, 5, 10, 15, and 20°C/min heating rates. Friedman and Starink methods were used for kinetic analysis while y(α) master plots were used for pyrolysis mechanisms prediction. The mean activation energy were 198 and 202 kJ/mol for Friedman and Starink, respectively. The master plots predicted that the pyrolysis process could be a combination of diffusion, geometrical contraction, nucleation, and reaction order models. The pre-exponential factors were in the range 1012 to 1019 s−1. Gibbs free energy was 180 −185 kJ/mol. The entropy values were negative up to α = 0.75 indicating high orderliness of products relative to reactants but changed to positive at higher conversions implying likely disorderliness of the products compared to reactants. The calorific value of Ash (Fraxinus) wood sawdust was 18.3 MJ/kg.en_UK
dc.identifier.citationNyombi A, Williams M, Wessling R. Determination of kinetic parameters and thermodynamic properties for Ash (Fraxinus) wood sawdust slow pyrolysis by thermogravimetric analysis. Energy Sources Part A Recovery, Utilisation and Environmental Effects, Volume 40, Issue 22, 2018, pp. 2660-2670en_UK
dc.identifier.issn1556-7036
dc.identifier.urihttps://doi.org/10.1080/15567036.2018.150284
dc.identifier.urihttp://dspace.lib.cranfield.ac.uk/handle/1826/14792
dc.language.isoenen_UK
dc.publisherTaylor and Francisen_UK
dc.rightsAttribution-NonCommercial 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/*
dc.subjectAsh (Fraxinus)en_UK
dc.subjectKinetic parametersen_UK
dc.subjectThermodynamic propertiesen_UK
dc.subjectCalorific valueen_UK
dc.subjectSlow Pyrolysisen_UK
dc.titleDetermination of kinetic parameters and thermodynamic properties for Ash (Fraxinus) wood sawdust slow pyrolysis by thermogravimetric analysisen_UK
dc.typeArticleen_UK

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