Biodiesel Production from Used Vegetable Oil Using Ethanol and Sodium Methoxide Catalyst

Biodiesel is derived from triglycerides by transesterification with methanol or ethanol. In this study, used vegetable oil was transesterified with ethanol using sodium methoxide as catalyst. Parameter affecting the process transesterification were investigated follow this detail. The effects of cat...

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Bibliographic Details
Published in:Key Engineering Materials 2016-12, Vol.723, p.551-555
Main Authors: Namwong, Sureerat, Punsuvon, Vittaya
Format: Article
Language:English
Subjects:
Biodiesel
Biodiesel fuels
Catalysts
Conversion
Ethanol
Ethyl alcohol
Fatty acids
NMR
Nuclear magnetic resonance
Process parameters
Reaction time
Sodium
Transesterification
Triglycerides
Vegetable oils
Vegetables
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Summary:Biodiesel is derived from triglycerides by transesterification with methanol or ethanol. In this study, used vegetable oil was transesterified with ethanol using sodium methoxide as catalyst. Parameter affecting the process transesterification were investigated follow this detail. The effects of catalyst to oil volume ratio (3-7:100 %v/v), ethanol to oil volume ratio (20-40:100 %v/v), reaction temperature (55-70 °C) and reaction time (15-90 min.) on the percentage conversion of fatty acid ethyl ester (FAEE) and fatty acid methyl ester (FAME). The FAEE and FAME conversion were detected by 1H-NMR. The result showed that the maximum percentages at 84 % of FAEE and 16 % of FAME were obtained. These conversions were obtained at the catalyst to oil volume ratio of 4:100 %v/v, ethanol to oil volume ratio of 35:100 %v/v, temperature of 65 °C and reaction time of 75 min. The properties of mixed FAEE and FAME biodiesel were within the limits of EN standard. The confirmation result by 1H-NMR and ATR-FTIR also indicated the conversion of used vegetable oil into biodiesel.
ISSN:1013-9826
1662-9795
1662-9795
DOI:10.4028/www.scientific.net/KEM.723.551