Acceleration of biodiesel fuel synthesis using electrical discharge in oil under ultrasonic irradiation

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The purpose of the research is to accelerate biodiesel fuel synthesis using electrical discharge in liquid reactant under ultrasonic irradiation, aiming to novel biodiesel fuel production process having advantages of fast, high-efficient and waste-less. The experiments were carried out with heterogeneous alkali catalysts which are also effective for promoting the reaction rate of biodiesel fuel production. The results showed that the reaction rate was enhanced by the electrical discharge in the reactant with the catalyst and argon injection under ultrasonic irradiation, confirming the synergy effect of the discharge and ultrasound. From the present research, the innovative reaction field generated by the combination of ultrasonic irradiation and electrical discharge in liquid will lead to the next-generation technology on biodiesel fuel production process as well as the development of plasma chemistry and application of liquid phase reactions.