Investigation of Non-Isothermal Kinetics and Thermodynamic Parameters for the Pyrolysis of Different Date Palm Parts

Investigation of Non-Isothermal Kinetics and Thermodynamic Parameters for the Pyrolysis of Different Date Palm Parts

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Using the thermalgravimetric technique, we investigated the non-isothermal combustion kinetics of abundant and low-cost date palm wastes (leaflet, rachis, fibers, and u11-200ps their composite) as potential biomass energy sources.The kinetic and thermodynamic parameters were determined by Flynn–Wall–Ozawa (FWO), Kissinger–Akahila–Sunose (KAS), and Starink methods.Thermogravimetric analysis results showed a major peak for the degradation of volatiles between 127–138 °C with average percentage mass loss of 68.04 ± 1.5, 65.

57 ± 0.6, 62.97 ± 5.5, and 59.26 ± 3.

2, for rachis, composite, leaflet, and fibers, respectively.The FWO model showed the lowest activation energy, E_α, of 157 ± 25.6, 158 ± 25.7, 164 ± 40.1, and 169 ± 51.

8 kJ mol⁻¹ for the composite, rachis, leaflet, and fibers, respectively.The positive enthalpy click here values confirmed an endothermic pyrolysis reaction.For all models, a minimal difference of 4.40, 5.57, 6.

55, and 7.51 kJ mol⁻¹ between activation energy and enthalpy for rachis, fibers, composite, and leaflet ensued, respectively.The KAS model was best suited to describe chemical equilibrium with average ΔG values of 90.3 ± 28.8, 99.

3 ± 34.9, 178.9 ± 27.3, and 186.5 ± 38.

2 kJ mol⁻¹ for rachis, fibers, composite, and leaflet, respectively.The reaction mechanism by the Malek and Popescu methods was (($g\left(\mathsf{\alpha }\right)=\left[-\ln \left(1-\mathsf{\alpha }\right){]}^{\frac{1}{4}}\right)$ across the conversion range of 0.1–0.9 for all heating rates.The high energy content and volatile matter combined with low energy barriers make date palm waste a potential candidate in a biorefinery.