Produção de biocombustíveis a partir da pirólise lenta do bagaço de cana-de-açúcar

• Autor(a) principal: Vieira, Samuel Faria [UNESP]
• Data de Publicação: 2018
• Tipo de documento: Trabalho de conclusão de curso
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://hdl.handle.net/11449/203720; http://www.athena.biblioteca.unesp.br/exlibris/bd/capelo/2020-01-20/000924331.pdf
• topic: Biocombustíveis; Pirolise; Bagaço de cana; Biochar; Energia - Fontes alternativas; Biomass energy

This work aims to obtain biofuels, biochar and bio-oil through the process of slow pyrolysis of sugarcane bagasse. In this work the effect of different temperatures (300, 400 and 500 ° C) on the biochar and bio-oil yield, as well as some properties, was evaluated. For the experimental tests the heating rate, particle size (250-500 μm) and a constant flow of entrainment gas were kept constant. The physico-chemical and energetic characterization of the products of the slow pyrolysis were carried out by different methods, such as immediate, compositional, pH and high calorific value (PCS) analysis. The results showed that the maximum yield of the bio-oil (52%) was obtained at 300øC, pH 3.5 and a PCS of 10.45 MJ / kg. Biochar yielded a yield of 34% at 300øC, pH 8.1 and PCS of 28.23 MJ / kg. The results show that the higher the temperature, the lower the amount of the solid fraction (biochar), the temperature did not influence significantly the PCS of the biofuels and that the reactivity of the biochar is higher in lower temperatures. It is believed that the physico-chemical properties, as well as the origin of matter and its process, directly influence the quality of biofuels. Several applications can be approached for these products, however, much is discussed regarding bio-oil as a complement to fuels and biochar in the generation of energy, increasing the share of renewable energy in the Brazilian energy matrix