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Pea Pod Valorization: Exploring the Influence of Biomass/Water Ratio, Particle Size, Stirring, and Catalysts on Chemical Platforms and Biochar Production

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  • Daniel Esteban Galvis Sandoval

    (Departamento de Química, Facultad de Ciencias, Universidad Nacional de Colombia, Carrera 30 No. 45-02 Ed. Química, Bogotá 111321, Colombia)

  • Alejandra Sophia Lozano Pérez

    (Departamento de Química, Facultad de Ciencias, Universidad Nacional de Colombia, Carrera 30 No. 45-02 Ed. Química, Bogotá 111321, Colombia)

  • Carlos Alberto Guerrero Fajardo

    (Departamento de Química, Facultad de Ciencias, Universidad Nacional de Colombia, Carrera 30 No. 45-02 Ed. Química, Bogotá 111321, Colombia)

Abstract

This study delves into the valorization of pea pod waste using hydrothermal processes, focusing on optimizing key parameters such as temperature, biomass-to-water ratio, particle size, and catalyst influence. Noteworthy findings include the significant impact of temperature variations on product yields, with 180 °C favoring sugars, HMF, and furfural, while 220 °C and 260 °C lead to distinct platform chemical productions. The utilization of a 1:20 biomass-to-water ratio consistently enhances yields by 10%, underscoring its importance in promoting efficient hydrolysis without excessive product degradation. Furthermore, the investigation into particle size reveals that smaller dimensions, particularly 1 mm particles, improved heat and mass transfer, reduced diffusion barriers, and enhanced digestibility, ultimately boosting overall efficiency in platform chemical production. Moreover, the study sheds light on the role of catalysts in the hydrothermal processes, showcasing the differential impact of acid and basic catalysts on product yields. Acid catalysts demonstrate a notable increase of up to 135.5% in the production of platform chemicals, emphasizing their crucial role in enhancing reaction efficiency. The complex relationship between agitation, temperature, and product formation is elucidated, with experiments revealing varying outcomes based on the presence or absence of agitation at different temperatures. These findings provide valuable insights into optimizing pea pod waste valorization, offering a pathway towards sustainable and efficient conversion of agricultural residues into valuable platform chemicals.

Suggested Citation

  • Daniel Esteban Galvis Sandoval & Alejandra Sophia Lozano Pérez & Carlos Alberto Guerrero Fajardo, 2024. "Pea Pod Valorization: Exploring the Influence of Biomass/Water Ratio, Particle Size, Stirring, and Catalysts on Chemical Platforms and Biochar Production," Sustainability, MDPI, vol. 16(17), pages 1-25, August.
  • Handle: RePEc:gam:jsusta:v:16:y:2024:i:17:p:7352-:d:1464610
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    References listed on IDEAS

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    1. Michela Langone & Daniele Basso, 2020. "Process Waters from Hydrothermal Carbonization of Sludge: Characteristics and Possible Valorization Pathways," IJERPH, MDPI, vol. 17(18), pages 1-33, September.
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