Pyrolytic kinetics and thermodynamic analyses of date seeds at different heating rates using the Coats–Redfern method

Mohsin Raza, Basim Abu-Jdayil, Abrar Inayat

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)

Abstract

Pyrolytic kinetic and thermodynamic analyses of date seeds were performed using thermogravimetric analysis (TGA) at different heating rates (10, 20, 30, and 40 °C/min) ranging from 20 °C to 900 °C. The curves of TGA and differential thermogravimetric analysis (DTG) showed that pyrolysis of date seeds consists of three areas of mass loss: dehydration, devolatilistion and char formation. The temperature range of each of these regions varies with heating rate. The Coats-Redfern method was used to perform the kinetic and thermodynamic evaluations for the devolatilisation region at different heating rates. The Zhuravlev diffusion equation proved to be the best–fit model with the highest regression coefficient values in the devolatilistion region. The average activation energy value for the devolatilistion region was estimated to be 186 kJ/mol. The kinetic data were used to determine the thermodynamic parameters (ΔH, ΔG, and ΔS). The data presented here are useful for describing date seeds as a significant raw material for pyrolysis, designing pyrolysis reactors, and understanding the mechanism of date seed pyrolysis in detail.

Original languageEnglish
Article number127799
JournalFuel
Volume342
DOIs
Publication statusPublished - Jun 15 2023

Keywords

  • Biomass pyrolysis
  • Biomass waste
  • Circular economy
  • Coats–Redfern method
  • Date palm waste
  • Date seeds
  • Kinetic analysis
  • Lignocellulosic biomass

ASJC Scopus subject areas

  • General Chemical Engineering
  • Fuel Technology
  • Energy Engineering and Power Technology
  • Organic Chemistry

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