Briquettes Produced With a Mixture of Urban Pruning Waste, Glycerin and Cassava Processing Residue

Silvia Maccari Petricoski, Armin Feiden, Adriana Ferla de Oliveira, Luciene Kazue Tokura, Jair Antonio Cruz Siqueira, Gabriela Bonassa, Bruno Meneghel Zilli, Daniele Patricia Gentelini-Marquez, Samuel Nelson Melegari de Souza, Cristiano Alexandre Feiden, Eduardo Augusto Feiden and Alexandra da Silva Martinez

Journal of Agricultural Science, 2024, vol. 12, issue 6, 158

Abstract: The briquette is considered a solid biofuel, made from the compaction of lignocellulosic residues used for the generation of energy. This work aimed to study the production of briquettes from mixtures of Urban Pruning Waste (RPU) (pruning of leaves and thin branches of trees), glycerin and cassava bagasse (Manihot esculenta). Samples of RPU, cassava bagasse and glycerol were mixed to yield treatments T1 (100% RPU), T2 (92% RPU and 8% cassava bagasse), T3 (97% RPU and 3% glycerin), T4 (89% RPU, 8% cassava bagasse and 3% Glycerin), T5 (94.5% RPU, 4% cassava bagasse and 1.5% glycerin) and T6 (control). Following this step, physical, chemical and energetic analyses (moisture content, volatile material content, fixed carbon and ash content, superior, inferior and useful calorific value, mechanical resistance, apparent and energetic density) of the briquettes were carried out. Treatment T2 had a lower fixed carbon value and volatile content, as well as higher ash content and mechanical strength. The percentages of carbon, hydrogen and nitrogen did not differ statistically between the treatments. The higher, lower and useful heating values were higher in treatment T3. The results showed that treatments T1, T2 and T3 were more efficient, producing briquettes with properties that meet market specifications, besides presenting great energetic potential, being good substitutes for firewood.

Date: 2024
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