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Updated: Jan 24, 2026

Fast Pyrolysis of Biomass Residues in a Twin-screw Mixing Reactor
Published on: September 9, 2016
Pyrolysis kinetics of biomass wastes using isoconversional methods and the distributed activation energy model
Cindy Natalia Arenas1, María Victoria Navarro2, Juan Daniel Martínez1
1Grupo de Investigaciones Ambientales (GIA), Universidad Pontificia Bolivariana (UPB), Circular 1ra N° 74-50, Medellín, Colombia.
Abstract:
In this work, a thermogravimetric analyser was used to assess the pyrolysis kinetics of pineapple, orange and mango peel wastes and agro-industrial by-products, rice husk and pine wood. Five isoconversional methods (KAS, FWO, Starink, Vyazovkin and Friedman) and one model-fitting method (DAEM) accurately fitted the experimental data at three heating rates (5, 10 and 20 °C/min) between 10% and 90% conversion. These methods agree with the trends shown by the activation energy (Ea) distribution calculated, with fluctuations between 150 and 550 kJ/mol. The fluctuations of Ea in the whole range of conversion, in addition to a higher number of relevant reactions obtained by DAEM for fruit peel samples compared to agro-industrial samples, are associated with a higher extractive content in the peels. Kinetic parameters fitted by DAEM were successfully verified at the highest heating rate studied.
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