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Energy Recovery from Pumpkin Peel Using Microwave-Assisted Pyrolysis

Author

Listed:
  • Scarlett Allende

    (Electronics Material Laboratory, College of Science and Engineering, James Cook University, Townsville, QLD 4811, Australia)

  • Graham Brodie

    (Electronics Material Laboratory, College of Science and Engineering, James Cook University, Townsville, QLD 4811, Australia)

  • Mohan V. Jacob

    (Electronics Material Laboratory, College of Science and Engineering, James Cook University, Townsville, QLD 4811, Australia)

Abstract

The significant quantities of food waste that require disposal have a high environmental impact, and the depletion of non-renewable fuel sources has heightened the need to investigate sustainable and efficient methods of biomass conversion into energy. This research focuses on utilising pumpkin peel as a feedstock for energy recovery through microwave pyrolysis under different operating conditions. The study demonstrated that a higher biochar yield (11 wt%) was achieved at 0.9 kW. However, results revealed that superior quality biochar was obtained at 1.2 kW, characterized by high carbon content (70.33%), low oxygen content (23%), and significant pore formation in the carbon surface area. Optimal operating conditions, such as 1.2 kW, resulted in superior quality biochar and higher bio-oil generation. The pumpkin peel demonstrated the potential for CO 2 (carbon dioxide) sequestration, with a rate of 14.29 g CO 2 eq/kg. The research findings contribute to the exploration of sustainable solutions for biomass conversion and emphasize the importance of utilizing food waste for energy production while mitigating environmental impacts.

Suggested Citation

  • Scarlett Allende & Graham Brodie & Mohan V. Jacob, 2023. "Energy Recovery from Pumpkin Peel Using Microwave-Assisted Pyrolysis," Energies, MDPI, vol. 16(18), pages 1-11, September.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:18:p:6438-:d:1233860
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    References listed on IDEAS

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    2. Huang, Yu-Fong & Chiueh, Pei-Te & Shih, Chun-Hao & Lo, Shang-Lien & Sun, Liping & Zhong, Yuan & Qiu, Chunsheng, 2015. "Microwave pyrolysis of rice straw to produce biochar as an adsorbent for CO2 capture," Energy, Elsevier, vol. 84(C), pages 75-82.
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