EFFECT OF TEMPERATURE AND CATALYST CONCENTRATION ON BIODIESEL PRODUCTION FROM FRYING RESIDUAL VEGETABLE OIL

Sánchez M.A.U.M.; Vivas-Cuellar M.C.; Collado D. E.A.; Marin-Flores O.G. · European Biomass Conference and Exhibition Proceedings (2024)

Resumen

Considering the current demand for renewable energies such as biodiesel, alternatives are sought to obtain it from residual vegetable oils generated in culinary processes, contributing to the mitigation of the environmental impact. The ability to achieve optimum yields through the application of transesterification under certain conditions and the evaluation of the effect of temperature is highlighted. For this, the raw material is evaluated by titration to determine the acid number and the percentage of free fatty acids. The process involves direct transesterification as the percentage of free fatty acids is less than 2%, using 96° ethanol and sodium hydroxide as catalyst at 0.1% and 1%, as well as temperature at 60 and 70°C. A biodiesel production yield of 85% is achieved when using a concentration of 1% sodium hydroxide at a temperature of 60°C. The purity of the biodiesel is ensured by carrying out laboratory scale washings to expel impurities. The factorial design for statistical analysis is implemented to examine the physical properties of biodiesel, including acid value and density.

Instituciones: Universidad Nacional de Ingeniería