Pyrolysis kinetics of potassium-impregnated rubberwood analyzed by evolutionary computation

Yu Ying Lin, Wei Hsin Chen, Baptiste Colin, Bo Jhih Lin, François Leconte, Anelie Pétrissans, Mathieu Pétrissans

Research output: Contribution to journalArticlepeer-review

Abstract

To explore the catalytic effect of potassium on pyrolysis characteristics of biomass, the rubberwood is pyrolyzed by a thermogravimetric analyzer. The samples are impregnated by three concentrations of potassium carbonate (0.004 M, 0.008 M, and 0.012 M). The pyrolysis kinetics is analyzed by an independent parallel reaction (IPR) model to describe the catalytic effect on the four-pseudo components model in the rubberwood. The particle swarm optimization (PSO) is adopted to optimize the fit quality between the established kinetic models and experimental data. It is found that the pyrolysis of rubberwood impregnated with 0.012 M concentration of K2CO3 can reduce the activation energy of cellulose from 223.86 to 204.14 kJ mol−1, whereas there is no obvious effect on the activation energies of hemicelluloses and lignin. The starting temperature and ending temperature of cellulose thermodegradation also move toward lower temperatures, indicating that the addition of potassium enhances the degradation of cellulose.

Original languageEnglish
Article number124145
JournalBioresource technology
Volume319
DOIs
Publication statusPublished - 2021 Jan

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Environmental Engineering
  • Renewable Energy, Sustainability and the Environment
  • Waste Management and Disposal

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