Improving the Physical, Mechanical and Energetic Characteristics of Pine Sawdust by the Addition of up to 40% Agave durangensis Gentry Pellets

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Abstract

Agave durangensis Gentry biomass, as a residue from the mezcal production process, may be an interesting bioenergy alternative; however, its high ash content limits its application. In this study, pellets were generated with agave fiber mixed with Pinus species sawdust in the following six proportions (%): 100–0 (control), 80–20, 60–40, 40–60, 20–80 and 0–100 (control). The physical, chemical and energetic properties of the pellets were evaluated according to the UNE-EN ISO 17225-6, UNE EN ISO 17827-2, UNE-EN ISO 17828, UNE-EN ISO 18122, UNE-EN ISO 18123, UNE-EN ISO 18125, and UNE-EN ISO 18134-1 standards. The results showed significant statistical differences (p < 0.05) among the treatments tested. The percentage of volatile material and fixed carbon ranged from 86.53 to 89.96% and 4.17 to 8.16%, respectively; the ash content ranged from 0.27 to 10.06%, and the calorific value ranged from 17.33 to 18.03 MJ/kg. Bulk density ranged from 725.76 to 737.37 kg/m3 and the impact-strength index was in the range of 69.33 to 126.66. The mechanical hardness and compressive strength were found to be in the ranges of 50.5 to 68.4% and 0.90 to 36.65 N/mm, respectively. Pellets generated with Agave residue mixture ≤ 40% were identified as promising biobased resources for the sustainable production of renewable energy.

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Blancarte-Contreras, E., Corral-Rivas, S., Domínguez-Gómez, T. G., Lujan-Soto, J. E., Goche-Télles, J. R., & Montiel-Antuna, E. (2022). Improving the Physical, Mechanical and Energetic Characteristics of Pine Sawdust by the Addition of up to 40% Agave durangensis Gentry Pellets. Energies, 15(10). https://doi.org/10.3390/en15103711

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