Purification of industrial glycerol: Production of ethyl esters from residual fatty acids using niobia catalyst

Authors

DOI:

https://doi.org/10.22481/exon.v12i2.20614

Keywords:

Use of fatty acid residue, Esterification, Biodiesel, Niobium oxide

Abstract

The reuse of residues generated in the glycerol purification process is of great importance due to the  commitment of the industries with sustainability, cost reduction and use of cleaner technologies. The  objective of the present work is to use residual fatty acids, obtained in crude glycerol purification, to  produce ethyl esters using niobium oxide as catalyst and ethanol as esterifying agent. The esters  generated in this reaction were mixed with biodiesel from the industrial reaction of transesterification,  which uses methanol as an esterifying agent, and sodium methylate as the homogeneous catalyst. With  mixtures containing 5% of these ethyl esters, all measured parameters were within the respective  Brazilian biodiesel specification ranges. The results obtained showed that the reuse of the fatty acid  residues present in industrial glycerol generate a greener fuel, compatible with current standards. 

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Published

2021-12-31

How to Cite

DOURADO, Mailena Silva; DE OLIVEIRA, Giulyane Felix; DOS SANTOS, Alan Silva; ARANDA, Donato Alexandre Gomes; FRÉTY, Roger; SALES, Emerson Andrade. Purification of industrial glycerol: Production of ethyl esters from residual fatty acids using niobia catalyst . Exatas Online, [S. l.], v. 12, n. 2, p. 105–115, 2021. DOI: 10.22481/exon.v12i2.20614. Disponível em: https://periodicos2.uesb.br/exon/article/view/20614. Acesso em: 2 oct. 2026.