Transesterification of Vegetables oil using Sub-and Supercritical Methanol

Nyoman , Puspa Asri and Siti , Machmudah and W, Wahyudiono and S, Suprapto and Kusno , Budikarjono and Achmad , Roesyadi and Mitsuru , Sasaki and Motonobu , Goto (2012) Transesterification of Vegetables oil using Sub-and Supercritical Methanol. In: International Conference on Chemical and Material Engineering 2012. ISBN : 978-602-097-281-7, September 12 – 13, 2012, , Grand Candi Hotel, Semarang Indonesia.

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Abstract

A benign process, non catalytic transesterification in sub and supercritical methanol method was used to prepare biodiesel from vegetables oil. The experiment was carried out in batch type reactor (8.8 ml capacity, stainless steel, AKICO, JAPAN) by changing the reaction condition such as reaction temperature (from 210°C in subcritical condition to 290°C in supercritical state in ranges of 20°C), molar ratio oil to methanol (1:12-1:42) and time of reaction (10-90 min). The fatty acid methyl esters (FAMEs) content was analyzed by gas chromatography-flame ionization detector (GC-FID). Such analysis can be used to determine the biodiesel yield of the transesterification. The results showed that the yield of biodiesel increases gradually with the increasing of reaction time at subcritical state (210-230oC). However, it was drastically increased at the supercritical state (270-290oC). Similarly with the influence of molar ratio oil-methanol, yield biodiesel sharply increased with increasing ratio molar of oil-methanol up to 1:24. The maximum yield 86 and 88% were achieved for soybean oil and palm oil, respectively, at 290oC, 90 min of reaction time and molar ratio of oil to methanol 1:24.

Item Type:Conference or Workshop Item (Paper)
Subjects:T Technology > TP Chemical technology
Divisions:UNDIP Conference/Seminar > International Conference on Chemical and Material Engineering 2012
Faculty of Engineering > Department of Chemical Engineering
Faculty of Engineering > Department of Chemical Engineering
ID Code:36899
Deposited By:teknik kimia
Deposited On:14 Nov 2012 10:39
Last Modified:14 Nov 2012 10:47

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