Pyrolysis kinetics of biomass wastes using isoconversional methods and the distributed activation energy model

Cindy Natalia Arenas, María Victoria Navarro, Juan Daniel Martínez

    Research output: Contribution to journalArticle in an indexed scientific journalpeer-review

    139 Scopus citations

    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.

    Original languageEnglish
    Article number121485
    JournalBioresource Technology
    Volume288
    DOIs
    StatePublished - Sep 2019

    Bibliographical note

    Publisher Copyright:
    © 2019 Elsevier Ltd

    Keywords

    • Biomass
    • Isoconversional methods
    • Kinetic models
    • Pyrolysis
    • Thermogravimetric analysis

    Types Minciencias

    • Artículos de investigación con calidad A1 / Q1

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