Journal
BIORESOURCE TECHNOLOGY
Volume 101, Issue 3, Pages 965-969Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2009.09.004
Keywords
Supercritical fluids; Biodiesel; Optimization; Response Surface Methodology
Funding
- Universiti Sains Malaysia [1001/PJKIMIA/1814047]
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In this study, fatty acid methyl esters (FAME) have been successfully produced from transesterification reaction between triglycerides and methyl acetate, instead of alcohol. In this non-catalytic supercritical methyl acetate (SCMA) technology, triacetin which is a valuable biodiesel additive is produced as side product rather than glycerol, which has lower commercial value. Besides, the properties of the biodiesel (FAME and triacetin) were found to be superior compared to those produced from conventional catalytic reactions (FAME only). In this study, the effects of various important parameters on the yield of biodiesel were optimized by utilizing Response Surface Methodology (RSM) analysis. The mathematical model developed was found to be adequate and statistically accurate to predict the optimum yield of biodiesel. The optimum conditions were found to be 399 degrees C for reaction temperature, 30 mol/mol of methyl acetate to oil molar ratio and reaction time of 59 min to achieve 97.6% biodiesel yield. (C) 2009 Elsevier Ltd. All rights reserved.
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