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Type: Artigo de periódico
Title: Isoconversional Kinetic Study Of The Thermal Decomposition Of Sugarcane Straw For Thermal Conversion Processes.
Author: Rueda-Ordóñez, Yesid Javier
Tannous, Katia
Abstract: The aim of this work was investigate the kinetics of the thermal decomposition reaction of sugarcane straw. The thermal decomposition experiments were conducted at four heating rates (1.25, 2.5, 5 and 10°C/min) in a thermogravimetric analyzer using nitrogen as inert atmosphere. The kinetic analysis was carried out applying the isoconversional method of Friedman, and the activation energies obtained varied from 154.1kJ/mol to 177.8kJ/mol. The reaction model was determined through master plots, corresponding to a two-dimensional diffusion. The pre-exponential factor of 1.82*10(9)s(-1) was determined by linearization of the conversion rate equation as a function of the inverse of absolute temperature, concerning to activation energy of 149.7kJ/mol, which are in the order of magnitude for biomass thermal decomposition reported in literature. Finally, the theoretical and experimental conversion data showed a very good agreement, indicating that these results could be used for future process modeling involving sugarcane straw.
Subject: Activation Energy
Model Free
Citation: Bioresource Technology. v. 196, p. 136-144, 2015-Nov.
Rights: embargo
Identifier DOI: 10.1016/j.biortech.2015.07.062
Date Issue: 2015
Appears in Collections:Unicamp - Artigos e Outros Documentos

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