Converting watermelon seeds into biomass energy is a good environmentally friendly opportunity to meet the increasing energy demand and reduce the dependence on fossil fuels. Thermogravimetric pyrolysis of water-melon seeds was investigated under non-isothermal conditions at different heating rates under inert atmosphere. Thermogravimetric analysis of watermelon seeds revealed four pyrolysis stages, two of which are active stages. Using attained pyrolysis characteristics, activation energies were calculated applying Kissinger-Akahira-Sunose and Starink isoconversional kinetic methods. The average activation energies using Kissinger-Akahira-Sunose method were 99.9 and 161.0 kJ/mol for the second and the third stage, respectively. Similarly, the average activation energies using Starink method were 100.2 and 161.3 kJ/mol for the second and the third stage, respectively. Pre-exponential factors and reaction models were determined by the application of Criado's master plots method combined with isoconversional methods. The experimental curves matched successfully with the developed models. Thermodynamic parameters including Delta H, Delta G, and Delta S values were calculated.
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Indian Inst Technol, Dept Aerosp Engn, Mumbai 400076, Maharashtra, IndiaIndian Inst Technol, Dept Aerosp Engn, Mumbai 400076, Maharashtra, India
Sahoo, Khokan
Raja, Kanuparthy Naga
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Hindustan Petr Corp Ltd, Corp Green Res & Dev Ctr, Bengaluru 560067, Karnataka, IndiaIndian Inst Technol, Dept Aerosp Engn, Mumbai 400076, Maharashtra, India
Raja, Kanuparthy Naga
Kumbhakarna, Neeraj
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Indian Inst Technol, Dept Mech Engn, Mumbai 400076, Maharashtra, IndiaIndian Inst Technol, Dept Aerosp Engn, Mumbai 400076, Maharashtra, India
Kumbhakarna, Neeraj
Kumar, Sudarshan
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Indian Inst Technol, Dept Aerosp Engn, Mumbai 400076, Maharashtra, IndiaIndian Inst Technol, Dept Aerosp Engn, Mumbai 400076, Maharashtra, India