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Transesterification of biodiesel from waste cooking oil using ultrasonic technique

Sebayang, Darwin and Agustian, Egi and Praptijanto, Achmad Transesterification of biodiesel from waste cooking oil using ultrasonic technique. In: International Conference on Environment (ICENV2010), 13-15 Disember 2010, Pulau Pinang.

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Abstract

The aim of this research is to explore a new transesterification process from waste cooking oil to biodiesel using ultrasonic technique. The conversion of waste cooking oil with sodium hydroxide as catalyst used ultrasonic type of clamp on tubular reactor at 20 kHz. The reaction time, molar ratio, and biodiesel quality of this process were compared with conventional transesterification. Method analyzed a total glycerol and free glycerol was determined with Gas Chromatography referred to EN 14105 and functional group of fatty acid methyl ester (FAME) used Attenuated Total Reflection Infrared Spectroscopy (ATR-IR) instruments. At the results, with presence of cavitation on the ultrasonic, chemical activity was increased so that the rate of ester formation is significantly enhanced. The ultrasonic technique could reduce the transesterification reaction time to 5 minute compared to 2 hours for mechanical stirring processing. Conversion of triglyceride (TG) to FAME using ultrasonic obtained 95.6929%wt with the methanol to oil molar ratio of 6:1 and 1%wt sodium hydroxide catalyst.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: transesterification; waste cooking oil; biodiesel; ultrasonic
Subjects: T Technology > TA Engineering (General). Civil engineering (General) > TA164 Bioengineering
Divisions: Faculty of Mechanical and Manufacturing Engineering > Department of Materials Engineering and Design
Depositing User: Normajihan Abd. Rahman
Date Deposited: 05 Oct 2011 07:25
Last Modified: 05 Oct 2011 07:25
URI: http://eprints.uthm.edu.my/id/eprint/2041
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