Briquette production from a mixture of biomass: poultry slaughterhouse sludge and sawdust
2022
Kunh, Sheila Simone | Tavares, Maria Hermínia Ferreira | da Silva, Edson Antônio | de Oliveira, Ricardo Sonsim | Bittencourt, Paulo Rodrigo Stival | Damaceno, Felippe Martins | do Nascimento, Cleuciane Tillvitz
This study refers to the development of hybrid briquettes using centrifuged sludge from the wastewater treatment of poultry and sawdust from furniture industry. The aim was to evaluate the performance of briquettes as a source of thermal energy, mitigating the risks of the current elimination and reducing the operational costs of their destination. To know the oxidizing characteristics of the briquettes and their mechanical resistance, superior calorific power, ash content, volatile materials, fixed carbon, and resistance to axial compression were evaluated. Thermogravimetric and differential exploratory calorimetry analyses were performed. Statistical treatments were carried out to verify the most significant factors to produce briquettes, the best proportions of the raw materials, and to evaluate whether there is interference from moisture and glue flour used as a binder. The best condition of the sludge-sawdust mixture was 15% and 85%, respectively, with 6.0% moisture. The best-case treatment had 23.82-MPa mechanical resistance, a calorific value of 17.20 MJ kg⁻¹, and a density of 1374.15 kg m⁻³.
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