TRANSESTERIFICATION OF VEGETABLES OIL USING SUBAND SUPERCRITICAL METHANOL
<p>A benign process, non catalytic transesterification in sub and supercritical methanol method was used<br />to prepare biodiesel from vegetables oil. The experiment was carried out in batch type reactor (8.8 ml<br />capacity, stainless steel, AKICO, JAPAN) by changing the reactio...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Diponegoro University
2012-11-01
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| Series: | Reaktor |
| Subjects: | |
| Online Access: | http://ejournal.undip.ac.id/index.php/reaktor/article/view/4800 |
| Summary: | <p>A benign process, non catalytic transesterification in sub and supercritical methanol method was used<br />to prepare biodiesel from vegetables oil. The experiment was carried out in batch type reactor (8.8 ml<br />capacity, stainless steel, AKICO, JAPAN) by changing the reaction condition such as reaction<br />temperature (from 210°C in subcritical condition to 290°C in supercritical state with of 20°C<br />interval), molar ratio oil to methanol (1:12-1:42) and time of reaction (10-90 min). The fatty acid<br />methyl esters (FAMEs) content was analyzed by gas chromatography-flame ionization detector (GCFID).<br />Such analysis can be used to determine the biodiesel yield of the transesterification. The results<br />showed that the yield of biodiesel increases gradually with the increasing of reaction time at<br />subcritical state (210-230oC). However, it was drastically increased at the supercritical state (270-<br />290oC). Similarly, the yield of biodiesel sharply increased with increasing the ratio molar of soy oilmethanol<br />up to 1:24. The maximum yield 86 and 88% were achieved at 290oC, 90 min of reaction time<br />and molar ratio of oil to methanol 1:24, for soybean oil and palm oil, respectively.</p><p>Proses transesterifikasi non katalitik dengan metanol sub dan superkritis,<br />merupakan proses yang ramah lingkungan digunakan untuk pembuatan biodiesel dari minyak nabati.<br />Percobaan dilakukan dalam sebuah reaktor batch (kapasitas 8,8 ml, stainless steel, AKICO, JAPAN),<br />dengan variabel kondisi reaksi seperti temperatur reaksi (dari kondisi subkritis 210°C-kondisi<br />superkritis 290°C dengan interval 20°C), rasio molar minyak-metanol (1:12-1:42) dan waktu reaksi<br />(10-90 menit). Kandungan metil ester asam lemak (FAME) dianalisis dengan kromatografi gas<br />dengan detektor FID (GC-FID). Hasil Analisis tersebut dapat digunakan untuk menentukan yield<br />biodiesel dari proses transesterifikasi. Hasil penelitian menunjukkan bahwa yield biodiesel meningkat<br />secara perlahan dengan meningkatnya waktu reaksi pada keadaan subkritis (210-230oC). Namun,<br />yield biodiesel meningkat secara drastis pada kondisi superkritis (270-290oC). Demikian pula halnya<br />dengan rasio molar minyak kedelai-metanol, dimana hasil biodiesel meningkat tajam dengan<br />meningkatnya rasio molar minyak-metanol hingga 1:24. Yield maksimum dicapai pada 290oC, waktu<br />reaksi 90 menit dan rasio molar minyak terhadap metanol 1:24, yaitu sebesar 86% untuk minyak<br />kedelai dan 88% untuk minyak sawit.</p><p> </p> |
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| ISSN: | 0852-0798 2407-5973 |