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Microstructure and Mechanical Characterization of Rice Husks from the Tolima Region of Colombia

Author

Listed:
  • Oscar Araque

    (Department of Mechanical Engineering, Universidad de Ibagué, Ibagué 730001, Colombia)

  • Nelson Arzola

    (Research Group in Multidisciplinary Optimal Design, Departamento de Ingeniería Mecánica y Mecatrónica, Universidad Nacional de Colombia, Bogotá 111321, Colombia)

  • Ivonne X. Cerón

    (Departamento de Producción y Sanidad Vegetal, Facultad Ingeniería Agronómica, Universidad del Tolima, Ibagué 730006, Colombia)

Abstract

The under-utilization of rice husk, a milling by-product, demands attention due to its widespread disposal and limited usage. This research aims to assess the physical properties and mechanical behavior of three rice husk varieties (F 2000, Orizyca, and Panorama 394), to determine their strength capacities and potential applications. Mechanical properties are evaluated through a non-standardized tension test using a universal machine. Subsequent analyses include measuring the moisture content following ASTM D1348, determining the particle size distribution through ASAE Standard S319, and establishing the bulk density using ASAE Standard S269 Method 4. Mechanical resistance in the rice husk varieties ranged from 60 MPa to 130 MPa, with a particle density exceeding 300 kg/m 3 and an average apparent density of 140 kg/m 3 . Scanning electron microscopy revealed the husk structures, identifying epidermis, hypodermis, and sub-hypodermis layers. The mechanical stress of the Orizyca variety was 1.89 times higher than that of F 2000, and 1.18 times higher than that of Panorama 394. Potential applications include brick manufacturing and thermoformed materials for Orizyca and Panorama 394, while F 2000 could be utilized for producing fuel briquettes or cardboard, among other possibilities.

Suggested Citation

  • Oscar Araque & Nelson Arzola & Ivonne X. Cerón, 2024. "Microstructure and Mechanical Characterization of Rice Husks from the Tolima Region of Colombia," Resources, MDPI, vol. 13(1), pages 1-12, January.
    • Handle: RePEc:gam:jresou:v:13:y:2024:i:1:p:16-:d:1322806
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    References listed on IDEAS

    as
    1. Imtiaz Anando, Ahmed & Ehsan, M Monjurul & Karim, Md Rezwanul & Bhuiyan, Arafat A. & Ahiduzzaman, Md & Karim, Azharul, 2023. "Thermochemical pretreatments to improve the fuel properties of rice husk: A review," Renewable Energy, Elsevier, vol. 215(C).
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