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Energy Efficiency of Lignocellulosic Biomass Pyrolysis in Two Types of Reactors: Electrical and with Primary Forest Biomass Fuel

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  • Juan-Carlos Cobos-Torres

    (Unidad Académica de Posgrado, Universidad Católica de Cuenca, Cuenca 010101, Ecuador
    Unidad Académica de Ingeniería Industria y Construcción, Universidad Católica de Cuenca, Cuenca 010101, Ecuador)

  • Juan Izquierdo

    (Unidad Académica de Posgrado, Universidad Católica de Cuenca, Cuenca 010101, Ecuador)

  • Manuel Alvarez-Vera

    (Unidad Académica de Posgrado, Universidad Católica de Cuenca, Cuenca 010101, Ecuador
    Unidad Académica de Ingeniería Industria y Construcción, Universidad Católica de Cuenca, Cuenca 010101, Ecuador)

Abstract

In this industrialized world, in which the daily consumption of fossil fuels occurs, companies seek to prioritize energy generation through renewable energy sources with minimal environmental impact to improve their energy efficiency. The research objective was to calculate CO 2 emissions for the pyrolysis process (conventional low-temperature pyrolysis) in two types of reactors, electric and traditional, where solar panels power the electric reactor. In addition, the amount of polluting gases and the energy consumption necessary to convert biomass into biochar were compared. Residual lignocellulosic biomass (RLB) from various species present in the southern region of Ecuador (eucalyptus, capuli, and acacia) was used, with three replicates per reactor. The electrical reactor (ER) consumed 82.60% less energy than the primary forest biomass fuel “traditional reactor (TR)” and distributed heat better in each pyrolytic process. The TR generated more pollution than the ER; it generated 40.48% more CO, 50% more NO 2 , 66.67% more SO 2 , and 79.63% more CH 4 . Undoubtedly, the pyrolysis process in an ER reduces environmental pollution and creates new bioproducts that could replace fossil fuels. This study provides relevant information on the residual biomass pyrolysis of plant species. These species are traditionally grown in the southern Ecuadorian region. In addition, an analysis of polluting gases for the TR and ER is presented.

Suggested Citation

  • Juan-Carlos Cobos-Torres & Juan Izquierdo & Manuel Alvarez-Vera, 2024. "Energy Efficiency of Lignocellulosic Biomass Pyrolysis in Two Types of Reactors: Electrical and with Primary Forest Biomass Fuel," Energies, MDPI, vol. 17(12), pages 1-13, June.
    • Handle: RePEc:gam:jeners:v:17:y:2024:i:12:p:2943-:d:1415273
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    References listed on IDEAS

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    1. Al-Rumaihi, Aisha & Shahbaz, Muhammad & Mckay, Gordon & Mackey, Hamish & Al-Ansari, Tareq, 2022. "A review of pyrolysis technologies and feedstock: A blending approach for plastic and biomass towards optimum biochar yield," Renewable and Sustainable Energy Reviews, Elsevier, vol. 167(C).
    2. Dhyani, Vaibhav & Bhaskar, Thallada, 2018. "A comprehensive review on the pyrolysis of lignocellulosic biomass," Renewable Energy, Elsevier, vol. 129(PB), pages 695-716.
    3. Bartłomiej Igliński & Wojciech Kujawski & Urszula Kiełkowska, 2023. "Pyrolysis of Waste Biomass: Technical and Process Achievements, and Future Development—A Review," Energies, MDPI, vol. 16(4), pages 1-26, February.
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