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Advisor(s)
Abstract(s)
Biomass is widely recognized as one of the main potential sources for renewable and sustainable
generation of fuels, chemicals and other carbon-based materials for a long time. According to
International Energy Agency, biomass energy accounts for about 14% of the world's total primary energy
supply in 2017. There are many advantages in using biomass as an energy source, namely its carbon
neutrality and being a non-polluting energy source. Many processes can be used to obtain fuels and
chemicals from biomass, and the pyrolysis process is a renewable, economical, and efficient way to
produce energy [1].
Pyrolysis is one of the main technologies for biomass conversion into energy. It consists of a thermal
decomposition process in an inert atmosphere with absence of oxygen, to convert biomass into biochar
(solid fraction), bio-oil (liquid fraction) and gases. Pyrolysis is a recognized industrial process for
biomass conversion. No waste is generated in the process, as the bio-oil and biochar can each be used as
a fuel and as fertilizer respectively, and the gases can be recycled back into the process [2].
A biomass sample (pellets) was characterized by proximate analysis, determining the fixed carbon (F.C.),
moisture, volatiles and ashes composition, and by ultimate analyses, determining the content of C, H, N,
S and O. The content of hemicellulose, lignin and cellulose was also determined. The methodologies are
described elsewhere [3]. All characterizations were performed on a dry basis, at the conditions in which
the sample was previously dried. Pyrolysis tests were performed in a fixed-bed vertical pyrolysis oven,
with a maximum temperature of 500 C, a heating rate of 10, 20, 35 and 40 C/min, a retention time of
0.5 h and an N2 flow of 20 mL/min. The bio-oil produced was qualitatively characterized using FTIR
Description
Keywords
Pyrolysis Biomass Valorization Renewable Energy Optimization
Citation
Batista, Gabriel de Freitas; Brito, Paulo (2022). Biomass characterization and pyrolysis, the effect of heating rate on products yield. In Ângela Ferreira; Carla Sofia Fernandes; Florbela Fernandes; Luís Pais (Eds.) VII Congresso Ibero-Americano de Empreendedorismo, Energia, Ambiente e Tecnologia. Bragança
Publisher
Instituto Politécnico de Bragança