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Vol. 35 No. 1 (2023): Vol 35 Issue 1

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Kinetic and Thermodynamic Analysis of Pyrolysis of Coconut Wood Residue

https://doi.org/10.14233/ajchem.2023.24016
Sindhu Nangarthody
Department of Chemical Engineering, National Institute of Technology, Calicut-673601, India ; Department of Chemical Engineering, Government Engineering College, Kozhikode-673005, India
V. Sivasubramanian
Department of Chemical Engineering, National Institute of Technology, Calicut-673601, India

Corresponding Author(s) : V. Sivasubramanian

siva@nitc.ac.in

Asian Journal of Chemistry, Vol. 35 No. 1 (2023): Vol 35 Issue 1

Abstract

Physico-chemical properties, kinetics and thermodynamic analysis of biomass are important in designing an efficient pyrolysis process. The current study aims to investigate the physico-chemical behaviour, calorific value and kinetics of thermal decomposition of coconut wood (Cocos nucifera) at 10, 15, and 25 ºC/min using the thermogravimetric analysis (TGA) technique in nitrogen atmospheres. Kinetic parameters were estimated using the Kissinger-Akahira-Sunose (KAS), Flynn-Wall-Ozawa (FWO), Staring, Tang, Friedman and Coats-Redfern (CR) methods. Average activation energy estimated from Kissinger-Akahira-Sunose (KAS), Starink, Tang and Coats-Redfern (CR) methods was ≈ 100 kJ/mol. The Flynn-Wall-Ozawa (FWO) method predicted a higher value of 104 kJ/mol and Friedman a lower value of 81 kJ/mol. Thermodynamic parameters like change in enthalpy, Gibbs free energy and entropy have also been evaluated.

Keywords

Coconut wood Thermogravimetric analysis Kinetic models Activation energy Thermodynamics
Nangarthody, S., & Sivasubramanian, V. (2022). Kinetic and Thermodynamic Analysis of Pyrolysis of Coconut Wood Residue. Asian Journal of Chemistry, 35(1), 39–44. https://doi.org/10.14233/ajchem.2023.24016
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