ABSTRACT. Tung's fruits (Aleurites fordii) produce oil of great applicability in the market of painting and covering due to its drying characteristics. Tung's oil may be an alternative for the production of new biofuels. In this study, it was evaluated the energetic potential of the fruit, oil and biodiesel obtained from the Tung. The average yielding of the extracted seed oil was 50.6%, a value similar to those presented in literature. Moreover, its density presented a value of 931.5 g L -1and its acid index, 4.5 mg KOH g -1 . In the last step of this study, biodiesel was produced by basic methyl route using potassium hydroxide. The specific mass of the produced biodiesel was 909.2 kg m Avaliação das frutas do Tung como possível fonte de energia sustentável RESUMO. O fruto de Tung (Aleurites fordii) produz óleo de grande aplicabilidade no mercado da pintura e da cobertura, pelas suas características de secagem. O óleo de Tung pode ser uma alternativa para a produção de novos biocombustíveis. Neste estudo, avaliou-se o potencial energético do fruto, óleo e biodiesel obtido a partir do tung. A média de produção do óleo extraído da semente foi de 50,6%, valor semelhante aos apresentados na literatura. Além disso, sua densidade apresentou um valor de 931,5 g L e seu ponto de inflamação foi de 178°C. Os valores de aquecimento in natura e o baixo nível de cinzas na biomassa residual torna os frutos do tung uma promissora fonte de energia limpa e renovável de segunda geração de combustível.Palavras-chave: oleaginosa, biomassa, poder calorífico, biodiesel.
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