| Summary: | The ever-increasing demand for global energy and the disadvantages related to the use of fossil fuels, mainly due to gas emissions during their combustion, are the main driving forces behind the development of renewable energy sources. In this regard, biodiesel is an interesting alternative, and its use could lead to a reduction in greenhouse gas emissions and their release to the atmosphere. In this study, research on heterogeneous catalysis was conducted in order to obtain a CaO catalyst that can be reused in the biodiesel production process. In addition, the transesterification reaction with the use of a heterogeneous catalysis, optimized by full factorial design, was performed. The reaction was conducted in a bench scale re-circulation reactor. The biodiesel obtained was characterized by gas chromatography, to evaluate the ester concentration and physical proprieties, such as density, viscosity and acid concentration. Initially, the best operational conditions were evaluated by data regression using STATISTICA 7.0 ® software. The results were then used to monitor the reaction progress and the catalyst deactivation over time and can verify that the quality of the biodiesel produced is preserved during the experiments. For this, we can conclude that the recycle reactor used in this study give good contribution to innovation in the biodiesel production.
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