Glycerolenriched heterogeneous catalyst for biodiesel production from soybean oil and waste frying oil

GABRIEL ORLANDO FERRERO; MANUEL FONSECA ALMEIDA; MARIA DA CONCEIÇÃO MACHADO ALVIM-FERRAZ; JOANA MAIA DIAS

ENERGY CONSERVATION AND MANAGEMENT

PERGAMON-ELSEVIER SCIENCE LTD

Lugar: Amsterdam; Año: 2015 vol. 89 p. 665 - 671

0196-8904

In the present work, biodiesel production using a glycerol enriched heterogeneous catalyst was studied. For that purpose, the catalyst performance at different glycerol concentrations and reaction conditions (under ambient atmosphere) was evaluated and two triglyceride sources were used. The most active catalyst was produced using CaO, glycerol and methanol at a mass ratio of 1:1.6:13.4, respectively. By performing the transesterification reaction under ambient atmosphere during 2 h at 333 K, using 0.4 wt.% of catalyst and 7:1 methanol to oil molar ratio, a good quality product was obtained (EN 14214) using both soybean oil and waste frying oil. The catalyst could be re-used during four cycles and could also be prepared by using ethanol instead of methanol (with differences