A New Proposal Using a Turbine in the Reactor with a Cavitation System in the Biodiesel Synthesis

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Ferreira, Sérgio L. [UNESP]
Módolo, Délson L. [UNESP]
Scalon, Vicente L. [UNESP]
Sanchez, Luiz E. A. [UNESP]
Avallone, Elson
Polito, Wagner L.

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The present research investigates the effect of a cavitation system with a turbine in comparison to the vigorous stirring on the process of biodiesel synthesis by the transesterification reaction using oil (triglycerides) and anhydrous ethanol. The proposed cavitation equipment consists of a device that works as a turbine (novelty) and not by a pump. The turbine coupled to cavitation system showed a substantial degree of intensification in comparison to the conventional approach reported in the literature. An ester content of 96.4 % in a 5 min reaction was obtained using conventional approach with vigorous stirring of 9500 rpm and ethanol/oil molar ratio of 8:1 and 1.0 wt% catalyst concentration. An ester content of 98.5 % was obtained using ethanol/oil molar ratio of 6:1, 1.0 wt% catalyst concentration and 60 s reaction by cavitation system with a turbine. The properties analyzed of biodiesel, such as density, viscosity, cetane number, cloud point, cold filter plugging point and flash point are within the limit values established by standard methods.



Biodiesel, Cavitation system, Electric consumption, Ester content, Turbine, Vegetable oil

Como citar

Waste and Biomass Valorization, v. 8, n. 8, p. 2693-2700, 2017.