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Language: English

Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received February 27, 2011
Accepted August 8, 2011

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Effects of ultrasonification and mechanical stirring methods for the production of biodiesel from rapeseed oil

Joungdu Shin^† Hyunook Kim¹ Seung-Gil Hong Soonik Kwon Young Eun Na² Sung Ho Bae² Woo-Kyun Park Kee-Kyoung Kang

Climate Change & Agroecology Division, National Academy of Agricultural Science, RDA, Suwon 441-707, Korea ¹Department of Environmental Engineering, University of Seoul, Seoul 130-020, Korea ²Team of Energy Policy, Presidential Committee on Green Growth, Seoul 110-110, Korea

jdshin1@korea.kr

Korean Journal of Chemical Engineering, April 2012, 29(4), 460-463(4), 10.1007/s11814-011-0205-3

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Abstract

This study was conducted to compare the effects of ultrasonic energy and mechanical stirring methods in bio-diesel production from rapeseed oil under base catalysis conditions. With the transesterification of rapeseed oil, the molar ratio of methanol to vegetable oil was 6 : 1, and the amount of catalysts added to the vegetable oil was 0.3, 0.5 and 1.0% (wt/wt). The main components of methyl esters from the transesterification of rapeseed oil were oleic acid (48.5%, C18:1) and linoleic acid (18.1%, C18:2). In addition, the optimum conditions to produce fatty acid methyl esters (96.6%) were 0.5% KOH after 25 min of ultrasonification at 40 ℃ as compared to mechanical stirring at 60 ℃. The maximum conversion ratio was 75.6% with 1.0% NaOH after 40 min of ultrasonification at 40 ℃. These results indicate that ultrasonic energy could be a valuable tool for transesterification of fatty acids from rapeseed oil in terms of the reaction time and temperature.

Keywords

Bio-diesel Production Fatty Acid Methyl Esters Rapeseed Oil Transesterification Ultrasonification

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