Krause, Maurício C.Moitinho, Adriana C.Ferreira, Luiz Fernando R.Souza, Ranyere L. deKrause, Laiza C.Caramão, Elina B.2022-04-022022-04-022019KRAUSE, M. C. et al. Production and characterization of the bio-oil obtained by the fast pyrolysis of spent coffee grounds of the soluble coffee industry. Journal of the Brazilian Chemical Society, São Paulo, v. 30, n. 8, p. 1608-1615, ago. 2019.1678-4790https://doi.org/10.21577/0103-5053.20190059http://www.sbicafe.ufv.br/handle/123456789/13411Agro-industrial wastes are abundant and low-cost sources of energy and chemicals. Biomass account for 14% of the world’s energy production. Industrial residues of production of soluble coffee (spent coffee grounds - SCG) have great potential due to its large-scale production and can be transformed by pyrolysis, in liquid, solid and gaseous products with applications from energy to chemicals. This work has the objective of producing bio-oil from the pyrolysis of industrial SCG, characterize it by chromatography and indicate its possible applications. As SGC contains a large amount of glycerides, they were extracted from SGC before the pyrolysis, aiming to obtain a better bio-oil from the residue. The yield in vegetable oil was 5.2% and its analyses showed that 50% are saturated acids (mainly palmitic 27.6%) and other 50% are unsaturated ones (mainly linoleic acid 35.3%). This composition qualifies this oil for biodiesel purposes. The residue (SGC after extraction) was submitted to pyrolysis, yielding 30% in liquid products, being 6% bio-oil. The bio-oil was analyzed by gas chromatography being identified free fatty acids, hydrocarbons, phenols and N-compounds. The heteroatomic compounds limit the use as biofuel but can be interesting for the pharmaceutical, agrochemical and fine chemicals industries.pdfenOpen AccessBiomassBio-oilPyrolysisSpent coffee groundsCafeicultura::Resíduos e subprodutos do caféArtigo