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Introducing a Novel Rice Husk Combustion Technology for Maximizing Energy and Amorphous Silica Production Using a Prototype Hybrid Rice Husk Burner to Minimize Environmental Impacts and Health Risk

Author

Listed:
  • S. D. S. Piyathissa

    (Graduate School of Science and Technology, University of Tsukuba, Tsukuba 305-8572, Japan)

  • P. D. Kahandage

    (Graduate School of Science and Technology, University of Tsukuba, Tsukuba 305-8572, Japan
    Department of Agricultural Engineering and Soil Science, Faculty of Agriculture, Rajarata University of Sri Lanka, Anuradhapura 50000, Sri Lanka)

  • Namgay

    (Graduate School of Science and Technology, University of Tsukuba, Tsukuba 305-8572, Japan)

  • Hao Zhang

    (Graduate School of Science and Technology, University of Tsukuba, Tsukuba 305-8572, Japan)

  • Ryozo Noguchi

    (Laboratory of Agricultural Systems Engineering, Division of Environmental Science and Technology, Graduate School of Agriculture, Kyoto University, Kyoto 606-8501, Japan)

  • Tofael Ahamed

    (Faculty of Life and Environmental Sciences, University of Tsukuba, Tsukuba 305-8572, Japan)

Abstract

Rice husk is the main by-product of the postharvest stage in rice production, which causes environmental impacts due to improper management as a solid waste. However, potential economic applications of rice husk combustion have been identified for energy generation and amorphous silica production in several industries. To minimize hazardous gaseous emissions and crystalline silica availability, rice husk combustion conditions should be properly controlled which also effect for efficient heat production. This study was conducted under different conditions of temperature, airflow, combustion time, and bulk density of rice husk in the combustion process using an experimental prototype hybrid rice husk burner with a fluidized bed. The availability of crystalline silica in rice husk charcoal and the CO and O 2 compositions in the exhaust gas were analyzed using XRD analysis and gas analysis, respectively. Furthermore, elemental and thermogravimetric analyses were conducted to find the most efficient combustion parameter for the optimum conditions of rice husk combustion using the experimental rice husk burner. Therefore, the most efficient heat generation was achieved with the observation of the lowest CO emission, the nonavailability of crystalline silica in rice husk charcoal, at a low temperature and air flow rate (430 °C; 0.8 ms −1 ), high bulk density (175 kgm −3 and 225 kgm −3 ) and short combustion time (30 s).

Suggested Citation

  • S. D. S. Piyathissa & P. D. Kahandage & Namgay & Hao Zhang & Ryozo Noguchi & Tofael Ahamed, 2023. "Introducing a Novel Rice Husk Combustion Technology for Maximizing Energy and Amorphous Silica Production Using a Prototype Hybrid Rice Husk Burner to Minimize Environmental Impacts and Health Risk," Energies, MDPI, vol. 16(3), pages 1-19, January.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:3:p:1120-:d:1041448
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    References listed on IDEAS

    as
    1. Emmanuel Owoicho Abah & Tofael Ahamed & Ryozo Noguchi, 2021. "Catalytic Temperature Effects on Conversion Efficiency of PM 2.5 and Gaseous Emissions from Rice Husk Combustion," Energies, MDPI, vol. 14(19), pages 1-19, September.
    2. Steven, Soen & Restiawaty, Elvi & Bindar, Yazid, 2021. "Routes for energy and bio-silica production from rice husk: A comprehensive review and emerging prospect," Renewable and Sustainable Energy Reviews, Elsevier, vol. 149(C).
    3. Albina, D.O., 2006. "Emissions from multiple-spouted and spout-fluid fluidized beds using rice husks as fuel," Renewable Energy, Elsevier, vol. 31(13), pages 2152-2163.
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