Composição em ácidos graxos de óleo de café: comparação de métodos de esterificação

Gutierrez, Luiz Eduardo

doi:10.1590/s0071-12761976000100006

Cited by 1 publication

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References 2 publications

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“…As can be seen from Table 2, all of the methyl esters identified (palmitate, linoleate, oleate, linolenate, stearate, arachidate and behenate) corroborate with those found in other studies 23,36,37 which can be compared to those found in other oil seeds, demonstrating the potential for using the SCG oil for processing into biodiesel. 38,39 Pyrolysis Table 3 shows the mass yields (m/m) of the pyrolysis of the SCG.…”

Section: Characterization Of the Solid Residue From The Soxhlet Extrasupporting

confidence: 85%

Production and Characterization of the Bio-Oil Obtained by the Fast Pyrolysis of Spent Coffee Grounds of the Soluble Coffee Industry

Krause

Moitinho

Ferreira

et al. 2019

J. Braz. Chem. Soc.

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Agro-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.

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Section: Characterization Of the Solid Residue From The Soxhlet Extrasupporting

confidence: 85%

Production and Characterization of the Bio-Oil Obtained by the Fast Pyrolysis of Spent Coffee Grounds of the Soluble Coffee Industry

Krause

Moitinho

Ferreira

et al. 2019

J. Braz. Chem. Soc.

View full text Add to dashboard Cite

show abstract

Composição em ácidos graxos de óleo de café: comparação de métodos de esterificação

Cited by 1 publication

References 2 publications

Production and Characterization of the Bio-Oil Obtained by the Fast Pyrolysis of Spent Coffee Grounds of the Soluble Coffee Industry

Production and Characterization of the Bio-Oil Obtained by the Fast Pyrolysis of Spent Coffee Grounds of the Soluble Coffee Industry

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