Characterization of briquettes produced from eucalyptus wood waste generated in agro-industries/Caracterizacao de briquetes produzidos a partir de residuos de madeira de eucalipto gerados em agroindustrias.

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Publisher: ATECEL--Associacao Tecnico Cientifica Ernesto Luiz de Oliveira Junior
Document Type: Article
Length: 3,625 words

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HIGHLIGHTS: Eucalyptus wood residues were compacted in dense blocks to evaluate the burning properties. Detailed description of the physico-chemical and thermal properties of the wastes were studied. The effect of the compaction pressure of the briquettes showed that the burning of the material occurs more slowly. Boilers are widely used by industries and thermoelectric plants to generate renewable energy. However, when biomass is consumed, residues are generated, which for the most part cannot be discarded appropriately. This study investigated the reuse of eucalyptus wood waste with the goal of transforming the residue into resistant and durable briquettes for reuse in furnaces and boilers. The physico-chemical properties of the residue were studied in terms of chemical composition by X-ray fluorescence, and its crystalline structure was evaluated by X-ray diffraction. Both thermogravimetric analysis and differential thermogravimetric analysis were used to characterize the thermal decomposition of the wood waste residue. The residue was compacted in a universal press with sufficient humidity to fabricate briquettes under different conditions of mechanical pressure. Apparent density, durability, and burning tests were carried out on the briquettes. The maximum temperature reached during burning is dependent on the fabrication compaction pressure. The briquettes proved suitable for burning in boilers and furnaces, and their durability is advantageous for handling, reuse, and transportation. Keywords: densification of briquettes, thermal analysis, physico-chemical properties, combustion Caldeiras sao amplamente utilizadas por industrias e usinas termeletricas para gerar energia renovavel. Porem, quando a biomassa e consumida, residuos sao gerados, que em sua maioria nao podem ser descartados de forma adequada. Este estudo investigou o reaproveitamento do residuo de madeira de eucalipto com o objetivo de transforma-lo em briquetes resistentes e duraveis para reaproveitamento em fornos e caldeiras. As propriedades fisico-quimicas do residuo foram estudadas em termos de composicao quimica por fluorescencia de raios-X, e sua estrutura cristalina foi avaliada por difracao de raios-X. Ambas analises termogravimetrica e termogravimetrica diferencial foram utilizadas para caracterizar a decomposicao termica do residuo de madeira. O residuo foi compactado em prensa universal com umidade suficiente para a fabricacao de briquetes sob diferentes condicoes de pressao mecanica. Os testes de densidade aparente, durabilidade e queima foram realizados nos briquetes. A temperatura maxima atingida durante a queima depende da pressao de compactacao de fabricacao. Os briquetes se mostraram adequados para queima em caldeiras e fornos, e sua durabilidade e vantajosa para manuseio, reutilizacao e transporte. Palavras-chave: densificacao dos briquetes, analise termica, propriedades fisico-quimicas, combustao

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Gale Document Number: GALE|A674989399