TY - JOUR
T1 - Comprehensive characterization and kinetic analysis of coconut shell thermal degradation
T2 - Energy potential evaluated via the Coats-Redfern method
AU - Uddin Monir, Minhaj
AU - Muntasir Shovon, Shaik
AU - Ahamed Akash, Faysal
AU - Habib, Md Ahosan
AU - Techato, Kuaanan
AU - Abd Aziz, Azrina
AU - Chowdhury, Shahariar
AU - Eka Prasetya, Tofan Agung
N1 - Publisher Copyright:
© 2024 The Authors
PY - 2024/3
Y1 - 2024/3
N2 - Coconut shell represents a promising biomass for energy production, given their wide availability. In this study, the thermo-kinetics of coconut shells were examined through thermogravimetric analysis from 30 °C to 1000 °C at 5 °C/min under N2. Advanced analytical tools assessed the elemental, microstructural, and morphological attributes of the samples. The thermal degradation unveiled three phases: dehydration, devolatilization, and combustion. Notably, the Coats-Redfern method detailed the devolatilization stage, pinpointing the coconut shell's thermal and kinetic attributes. The Zhuravlev diffusion equation (DM6) emerged as the most suitable model, with an activation energy (Ea) and pre-exponential factor of 68.9 kJ mol−1 and 0.05 min−1, respectively. Thermodynamic values such as enthalpy (ΔH), Gibbs free energy (ΔG), and entropy (ΔS) for devolatilization were 65.2, 193.1, and −0.28117, respectively. Collectively, the findings underscore the significant bioenergy potential of coconut shells, positioning them as a sustainable alternative to traditional energy. Such insights play a crucial role in improving pyrolysis reactor designs and comprehending the mechanisms of coconut shell pyrolysis, offering potential solutions for energy deficits and environmental concerns.
AB - Coconut shell represents a promising biomass for energy production, given their wide availability. In this study, the thermo-kinetics of coconut shells were examined through thermogravimetric analysis from 30 °C to 1000 °C at 5 °C/min under N2. Advanced analytical tools assessed the elemental, microstructural, and morphological attributes of the samples. The thermal degradation unveiled three phases: dehydration, devolatilization, and combustion. Notably, the Coats-Redfern method detailed the devolatilization stage, pinpointing the coconut shell's thermal and kinetic attributes. The Zhuravlev diffusion equation (DM6) emerged as the most suitable model, with an activation energy (Ea) and pre-exponential factor of 68.9 kJ mol−1 and 0.05 min−1, respectively. Thermodynamic values such as enthalpy (ΔH), Gibbs free energy (ΔG), and entropy (ΔS) for devolatilization were 65.2, 193.1, and −0.28117, respectively. Collectively, the findings underscore the significant bioenergy potential of coconut shells, positioning them as a sustainable alternative to traditional energy. Such insights play a crucial role in improving pyrolysis reactor designs and comprehending the mechanisms of coconut shell pyrolysis, offering potential solutions for energy deficits and environmental concerns.
KW - Activation energy
KW - Coats-Redfern method
KW - Coconut shell pyrolysis
KW - Kinetic analysis
KW - Thermodynamic characteristics
UR - http://www.scopus.com/inward/record.url?scp=85186357848&partnerID=8YFLogxK
U2 - 10.1016/j.csite.2024.104186
DO - 10.1016/j.csite.2024.104186
M3 - Article
AN - SCOPUS:85186357848
SN - 2214-157X
VL - 55
JO - Case Studies in Thermal Engineering
JF - Case Studies in Thermal Engineering
M1 - 104186
ER -