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Optimizing Seaweed ( Ascophyllum nodosum ) Thermal Pyrolysis for Environmental Sustainability: A Response Surface Methodology Approach and Analysis of Bio-Oil Properties

Author

Listed:
  • Zahidul Islam Rony

    (Fuel and Energy Research Group, School of Engineering and Technology, Central Queensland University, Norman Gardens, QLD 4701, Australia)

  • Mohammad Golam Rasul

    (Fuel and Energy Research Group, School of Engineering and Technology, Central Queensland University, Norman Gardens, QLD 4701, Australia)

  • Md Islam Jahirul

    (Fuel and Energy Research Group, School of Engineering and Technology, Central Queensland University, Norman Gardens, QLD 4701, Australia)

  • Mohammad Mehedi Hasan

    (Fuel and Energy Research Group, School of Engineering and Technology, Central Queensland University, Norman Gardens, QLD 4701, Australia)

Abstract

This study focuses on optimizing the thermal pyrolysis process to maximize pyrolysis oil yield using marine biomass or seaweed. The process, conducted in a batch reactor, was optimized using response surface methodology and Box–Behnken design. Variables like temperature, residence time, and stirring speed were adjusted to maximize bio-oil yield. The optimal conditions yielded 42.94% bio-oil at 463.13 °C, with a residence time of 65.75 min and stirring speed of 9.74 rpm. The analysis showed that temperature is the most critical factor for maximizing yield. The bio-oil produced contains 11 functional groups, primarily phenol, aromatics, and alcohol. Its high viscosity and water content make it unsuitable for engines but suitable for other applications like boilers and chemical additives. It is recommended to explore the potential of refining the bio-oil to reduce its viscosity and water content, making it more suitable for broader applications, including in engine fuels. Further research could also investigate the environmental impact and economic feasibility of scaling up this process.

Suggested Citation

  • Zahidul Islam Rony & Mohammad Golam Rasul & Md Islam Jahirul & Mohammad Mehedi Hasan, 2024. "Optimizing Seaweed ( Ascophyllum nodosum ) Thermal Pyrolysis for Environmental Sustainability: A Response Surface Methodology Approach and Analysis of Bio-Oil Properties," Energies, MDPI, vol. 17(4), pages 1-23, February.
    • Handle: RePEc:gam:jeners:v:17:y:2024:i:4:p:863-:d:1337889
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    References listed on IDEAS

    as
    1. Hasan, M.M. & Rasul, M.G. & Ashwath, N. & Khan, M.M.K. & Jahirul, M.I., 2022. "Fast pyrolysis of Beauty Leaf Fruit Husk (BLFH) in an auger reactor: Effect of temperature on the yield and physicochemical properties of BLFH oil," Renewable Energy, Elsevier, vol. 194(C), pages 1098-1109.
    2. Dhyani, Vaibhav & Bhaskar, Thallada, 2018. "A comprehensive review on the pyrolysis of lignocellulosic biomass," Renewable Energy, Elsevier, vol. 129(PB), pages 695-716.
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