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Worldwide, many studies have been undertaken in the pursuit of renewable forms of energy, biofuels, which are efficient in their production processes, present positive energy balance and are environmentally friendly. Brazil, like other nations of the world, is engaged in this type of research and, among the mitigating actions that have already been taken in regard to environmental issues, is the formulation and implementation of public policies to encourage use of biofuels towards a gradual reduction in fossil fuel use. The industrial processes of biodiesel production most commonly employed are based on the transesterification of vegetable oils and animal fats with methanol or ethanol as esterification agent and homogeneous catalysts, especially the strongly alkaline such as sodium or potassium hydroxide and sodium methoxide. Among the recent advances in the transesterification processes, those employing ultrasound stand out for effective improvement in the process, both in terms of degrees of conversions and reducing reaction time and energy consumption. This work aimed at contributing to sustainable development of the biodiesel production process by developing innovative technologies for biodiesel production using ultrasound irradiation. The developed ultrasound reactor allowed for a greater interaction between the phases, resulting in increases in ester yield, reduced reaction times, reduced reagent consumption, and therefore saving energy.

Desenvolvimento de processo de produção de biodiesel em escala piloto através de rota inovadora utilizando irradiação ultrassônica