Conversion of Vegetable Oil to Biodiesel Using Ultrasonic Irradiation
- 14 July 2003
- journal article
- research article
- Published by Oxford University Press (OUP) in Chemistry Letters
- Vol. 32 (8), 716-717
- https://doi.org/10.1246/cl.2003.716
Abstract
The influence of low frequency ultrasounds (28 and 40 kHz) versus mechanical stirring on the transesterification reaction of neat vegetable oil with methanol under base-catalysis was studied and the results are presented. It was found that the optimized variables of 6:1 methanol/oil (mol/mol), 0.5% NaOH (wt/wt), and 40 kHz ultrasonic irradiation at 25 °C for 20 min gave a maximum isolated ester yield of 98%.Keywords
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