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Hydrothermal Liquefaction of Sugarcane Bagasse and Straw: Effect of Operational Conditions on Product Fractionation and Bio-Oil Composition

Author

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  • Raquel Santos Silva

    (Department of Chemical Engineering, Federal University of Pernambuco, Av. dos Economistas, s/n, Recife 50740-590, Brazil
    Fuel Laboratory (LAC), Institute for Petroleum and Energy Research (i-LITPEG), Federal University of Pernambuco, Av. da Arquitetura, s/n, Recife 50740-550, Brazil)

  • Reinaldo Alves da Silva

    (Department of Chemical Engineering, Federal University of Pernambuco, Av. dos Economistas, s/n, Recife 50740-590, Brazil
    Fuel Laboratory (LAC), Institute for Petroleum and Energy Research (i-LITPEG), Federal University of Pernambuco, Av. da Arquitetura, s/n, Recife 50740-550, Brazil)

  • Flávio Montenegro de Andrade

    (Fuel Laboratory (LAC), Institute for Petroleum and Energy Research (i-LITPEG), Federal University of Pernambuco, Av. da Arquitetura, s/n, Recife 50740-550, Brazil
    Department of Fundamental Chemistry, Federal University of Pernambuco, Av. Jorn. Aníbal Fernandes, s/n, Recife 50740-560, Brazil)

  • Pedro Nunes Acácio Neto

    (Department of Chemical Engineering, Federal University of Pernambuco, Av. dos Economistas, s/n, Recife 50740-590, Brazil
    Fuel Laboratory (LAC), Institute for Petroleum and Energy Research (i-LITPEG), Federal University of Pernambuco, Av. da Arquitetura, s/n, Recife 50740-550, Brazil)

  • Rayane Maria do Nascimento

    (Department of Chemistry, Federal Rural University of Pernambuco, Rua Manuel de Medeiros, s/n, Recife 52171-900, Brazil)

  • Jandyson Machado Santos

    (Department of Chemistry, Federal Rural University of Pernambuco, Rua Manuel de Medeiros, s/n, Recife 52171-900, Brazil)

  • Luiz Stragevitch

    (Department of Chemical Engineering, Federal University of Pernambuco, Av. dos Economistas, s/n, Recife 50740-590, Brazil
    Fuel Laboratory (LAC), Institute for Petroleum and Energy Research (i-LITPEG), Federal University of Pernambuco, Av. da Arquitetura, s/n, Recife 50740-550, Brazil)

  • Maria Fernanda Pimentel

    (Department of Chemical Engineering, Federal University of Pernambuco, Av. dos Economistas, s/n, Recife 50740-590, Brazil
    Fuel Laboratory (LAC), Institute for Petroleum and Energy Research (i-LITPEG), Federal University of Pernambuco, Av. da Arquitetura, s/n, Recife 50740-550, Brazil)

  • Diogo Ardaillon Simoes

    (Fuel Laboratory (LAC), Institute for Petroleum and Energy Research (i-LITPEG), Federal University of Pernambuco, Av. da Arquitetura, s/n, Recife 50740-550, Brazil
    Department of Biochemistry, Federal University of Pernambuco, Av. Reitor Joaquim Amazonas, s/n, Recife 50740-570, Brazil)

  • Leandro Danielski

    (Department of Chemical Engineering, Federal University of Pernambuco, Av. dos Economistas, s/n, Recife 50740-590, Brazil
    Fuel Laboratory (LAC), Institute for Petroleum and Energy Research (i-LITPEG), Federal University of Pernambuco, Av. da Arquitetura, s/n, Recife 50740-550, Brazil)

Abstract

In the energy transition process, aiming for zero disposal and clean production in the elimination of waste is crucial; consequently, agricultural residues have significant potential for reduction in the use of fossil fuels. This study investigates the hydrothermal liquefaction (HTL) of sugarcane bagasse (BSC) and straw (SSC), examining the products’ distribution and bio-oil composition relative to the reaction conditions. The experiments used a 2 3 factorial design, evaluating the temperature (300–350 °C), constant heating time (0–30 min), and the use of the K 2 CO 3 concentration as the catalyst (0–0.5 mol/L −1 ). The main factor affecting the biocrude yield from BSC and SSC was the use of K 2 CO 3 . Statistically significant interaction effects were also observed. Milder conditions resulted in the highest bio-oil yields, 36% for BSC and 31% for SSC. The catalyst had no impact on the biocrude production. The bio-oils were analyzed by GC/MS and FTIR; a principal component analysis (PCA) was performed to evaluate the samples’ variability. The FTIR highlighted bands associated with common oxygenated compounds in lignocellulosic biomass-derived bio-oils. The GC-MS results indicated a predominance of oxygenated compounds, and these were highest in the presence of the catalyst for both the BSC (90.6%) and SSC (91.7%) bio-oils. The SSC bio-oils presented higher oxygenated compound contents than the BSC bio-oils. Statistical analysis provided valuable insights for optimizing biomass conversion processes, such as determining the optimal conditions for maximizing product yields.

Suggested Citation

  • Raquel Santos Silva & Reinaldo Alves da Silva & Flávio Montenegro de Andrade & Pedro Nunes Acácio Neto & Rayane Maria do Nascimento & Jandyson Machado Santos & Luiz Stragevitch & Maria Fernanda Piment, 2024. "Hydrothermal Liquefaction of Sugarcane Bagasse and Straw: Effect of Operational Conditions on Product Fractionation and Bio-Oil Composition," Energies, MDPI, vol. 17(21), pages 1-17, October.
    • Handle: RePEc:gam:jeners:v:17:y:2024:i:21:p:5439-:d:1510976
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    References listed on IDEAS

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    1. Gan, Jing & Yuan, Wenqiao, 2013. "Operating condition optimization of corncob hydrothermal conversion for bio-oil production," Applied Energy, Elsevier, vol. 103(C), pages 350-357.
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