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Abstract <p>This article reports promising characteristics of mustard and canola pressed cakes (MR and CR, respectively) as biomass feedstock for pyrolysis as justified by their proximate and ultimate analyses. Low moisture, low ash (8.22% for MR), high volatile matter (82.93% for CR), and moderate fixed carbon (7.94% for CR, 8.1% for MR) and desirable functional group revealed by their FTIR analyses all advocate their fruitful pyrolysis. Thermogravimetric analysis (TGA) along with DTGA show complicated apparent pyrolysis profiles. The application of advanced kinetic approach, utilizing the generalized linear isoconversional method, reveals complicated activation energy dependency patterns, associated with the overlapping degradation stages that include dehydration (E = 106.02&#xa0;kJ/mol for MR, 94.06&#xa0;kJ/mol for CR), pseudo-hemicellulose breakdown (180.5&#xa0;kJ/mol for MR, 189.8&#xa0;kJ/mol for CR), pseudo-cellulose degradation (202.1&#xa0;kJ/mol for MR, 239.7&#xa0;kJ/mol for CR), and pseudo-lignin breakdown (E = 379.80&#xa0;kJ/mol for MR, 500.9&#xa0;kJ/mol for CR). The mechanistic function F(α, T) based on the advanced kinetics approach suggests that the majority of the pyrolysis processes in mustard and canola de-oiled cakes pursue complicated diffusion and nucleation/growth mechanisms. Overall, these results bring forth valuable insights in regard to optimizing bioenergy production and utilization of agricultural waste in the sustainable practices.</p> Graphical abstract <p></p>

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Kinetics and non-isothermal pyrolysis mechanisms in mustard and canola de-oiled cakes

  • 期刊论文

  • 发表日期：

    2025年8月28日

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  • Fatima Saleem,
  • Nadia Qadir,
  • Muhammad Azeem Arshad,
  • Khurram Shahzad Munawar

摘要

Abstract

This article reports promising characteristics of mustard and canola pressed cakes (MR and CR, respectively) as biomass feedstock for pyrolysis as justified by their proximate and ultimate analyses. Low moisture, low ash (8.22% for MR), high volatile matter (82.93% for CR), and moderate fixed carbon (7.94% for CR, 8.1% for MR) and desirable functional group revealed by their FTIR analyses all advocate their fruitful pyrolysis. Thermogravimetric analysis (TGA) along with DTGA show complicated apparent pyrolysis profiles. The application of advanced kinetic approach, utilizing the generalized linear isoconversional method, reveals complicated activation energy dependency patterns, associated with the overlapping degradation stages that include dehydration (E = 106.02 kJ/mol for MR, 94.06 kJ/mol for CR), pseudo-hemicellulose breakdown (180.5 kJ/mol for MR, 189.8 kJ/mol for CR), pseudo-cellulose degradation (202.1 kJ/mol for MR, 239.7 kJ/mol for CR), and pseudo-lignin breakdown (E = 379.80 kJ/mol for MR, 500.9 kJ/mol for CR). The mechanistic function F(α, T) based on the advanced kinetics approach suggests that the majority of the pyrolysis processes in mustard and canola de-oiled cakes pursue complicated diffusion and nucleation/growth mechanisms. Overall, these results bring forth valuable insights in regard to optimizing bioenergy production and utilization of agricultural waste in the sustainable practices.

Graphical abstract