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Microwave-assisted biodiesel production from WCO using snail shell-derived CaO@Coal fly ash: Optimization via RSM, cost analysis, kinetics, thermodynamics, and bibliometrics

Author

Listed:
  • Das, Shikhasmita
  • Kaushik, Biman
  • Chaudhury, Arpita Paul
  • Basumatary, Sanjay
  • Pratap, Priyanshu
  • Mohan, Sakar
  • Rano, Ruma
  • Rokhum, Samuel Lalthazuala

Abstract

The global energy crisis and growing environmental alarms have hastened the search for renewable energy sources. This study explores a novel approach to biodiesel synthesis using microwave-assisted transesterification with a composite catalyst derived from snail shell-derived calcium oxide (CaO) supported on coal fly ash. The synthesized catalyst exhibits FAME conversion of 98.03 % under optimal conditions. Diverse analytical techniques were utilized to characterize the catalyst using TGA, XRF, BET, CO2-TPD, XRD, XPS, SEM, ICP-OES, and TEM analysis. Kinetic and thermodynamic parameters resulted in an activation energy of 36.6 kJ mol−1, an activation enthalpy of 33.62 kJ mol−1, and an entropy of −0.173 kJ mol−1 K−1, respectively. The cost analysis effectively demonstrated the economic viability of this method. A comprehensive bibliometric analysis also provided insights into the research trends and developments in biodiesel production from waste materials regarding feedstock and catalysts. The findings indicate that microwave-assisted biodiesel production with eco-friendly catalysts offers a promising alternative for sustainable energy, meeting economic and environmental objectives as the Sustainable Development Goals (SDGs).

Suggested Citation

  • Das, Shikhasmita & Kaushik, Biman & Chaudhury, Arpita Paul & Basumatary, Sanjay & Pratap, Priyanshu & Mohan, Sakar & Rano, Ruma & Rokhum, Samuel Lalthazuala, 2025. "Microwave-assisted biodiesel production from WCO using snail shell-derived CaO@Coal fly ash: Optimization via RSM, cost analysis, kinetics, thermodynamics, and bibliometrics," Renewable Energy, Elsevier, vol. 254(C).
  • Handle: RePEc:eee:renene:v:254:y:2025:i:c:s096014812501403x
    DOI: 10.1016/j.renene.2025.123741
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    References listed on IDEAS

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