Enhancing Biodiesel from Kemiri Sunan Oil Manufacturing using Ultrasonics

¹ Doctoral Program of Environmental Science, School of Postgraduate Studies, Diponegoro University, Semarang, Indonesia
² Department of Mechanical Engineering, Universitas PGRI Semarang, Semarang, Indonesia
³ Department of Chemical Engineering, Faculty of Engineering, Diponegoro University, Semarang, Indonesia
⁴ Department of Electrical Engineering, Faculty of Engineering, Diponegoro University, Semarang, Indonesia

^* Corresponding author: slametsupriyadi@upgris.ac.id

Abstract

Kemiri Sunan (Reutalis trisperma (Blanco) Airy Shaw) is a potential plant to be developed as biodiesel feedstock. The advantage of Kemiri Sunan seeds when compared to other biodiesel raw materials is their high oil content. This plant is also very good for land conservation. Due the increasingly demand for biodiesel, research and new methods to increase its biodiesel production continue to be undertaken. The weakness of conventional biodiesel manufacturing process is in the mixing process in which mechanical stirring and heating in the trans-esterification process require more energy and a longer time. A higher and stronger mixing process is required to increase the contact area between the two phases of the mixed substance to produce the emulsion. Ultrasonic is a tool that can be useful for a liquid mixing process that tends to be separated. Ultrasonic waves can cause mixing intensity at the micro level and increase mass transfer, so the reaction can be performed at a much faster rate. This study is to figure out the effect of ultrasonic irradiation on the transesterification process of biodiesel from Kemiri Sunan Oil.