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<p>This work investigates the pyrolysis behavior of alfa fibers (AF), focusing on its physicochemical characteristics, thermal degradation analysis, thermokinetic evaluation, and the characterization of the resulting pyrolysis products. AF exhibited low moisture and ash contents, high volatile matter, and low nitrogen levels, confirming its potential as a bioenergy source. The thermal breakdown behavior of AF was assessed using TGA analysis under four different heating rates, and the resulting data were used to determine the kinetic and thermodynamic parameters through the KAS, FWO, and Friedman iso-conversional models. The computed average activation energies were 242.23, 250.6, and 261.57&#xa0;kJ/mol for KAS, FWO, and Friedman models. Furthermore, the comprehensive pyrolysis index (CPI) indicated that a higher heating rate is beneficial for improved pyrolysis performance. Characterization of the derived pyrolysis products demonstrated that bio-oil contains a chemically rich composition, rendering it suitable for the recovery of valuable compounds, whereas the biochar displayed a high carbon content, low ash and nitrogen levels, and a higher HHV value, signifying its utility as an efficient solid fuel. This research highlights the strong potential of AF, an abundant biomass source in Morocco, as a valuable resource for bioenergy production through pyrolysis.</p> Graphical Abstract <p></p>

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Thermokinetic approach to alfa fiber pyrolysis: thermal behavior, reaction kinetics, thermodynamics, and product characterization

  • 期刊论文

  • 发表日期：

    2026年2月25日

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  • Amine Miftah,
  • Zineb Ouahouah,
  • Soumaya Basaoud,
  • Leila Azaryouh,
  • Khalifa El Harfi,
  • Adil Aboulkas

摘要

This work investigates the pyrolysis behavior of alfa fibers (AF), focusing on its physicochemical characteristics, thermal degradation analysis, thermokinetic evaluation, and the characterization of the resulting pyrolysis products. AF exhibited low moisture and ash contents, high volatile matter, and low nitrogen levels, confirming its potential as a bioenergy source. The thermal breakdown behavior of AF was assessed using TGA analysis under four different heating rates, and the resulting data were used to determine the kinetic and thermodynamic parameters through the KAS, FWO, and Friedman iso-conversional models. The computed average activation energies were 242.23, 250.6, and 261.57 kJ/mol for KAS, FWO, and Friedman models. Furthermore, the comprehensive pyrolysis index (CPI) indicated that a higher heating rate is beneficial for improved pyrolysis performance. Characterization of the derived pyrolysis products demonstrated that bio-oil contains a chemically rich composition, rendering it suitable for the recovery of valuable compounds, whereas the biochar displayed a high carbon content, low ash and nitrogen levels, and a higher HHV value, signifying its utility as an efficient solid fuel. This research highlights the strong potential of AF, an abundant biomass source in Morocco, as a valuable resource for bioenergy production through pyrolysis.

Graphical Abstract