Optimization of In Situ Methanolysis of Jatropha curcas Seeds

Abstract:

The response surface methodology based on central composite design was applied to optimize three reaction variables including the ratio of methanol volume to seed weight, catalyst concentration, and reaction temperature for conducting in-situ methanolysis of Jatropha curcas seeds. Using RSM, second-order polynomial equations were attained to predict the yield of fatty acid methyl ester. The optimum parameters had been determined which included 8.08 ratio of methanol volume to seed weight, 1.94 wt.% sodium hydroxide concentration, and 56°C reaction temperature. At this optimum condition, the highest biodiesel yield of (90.45 ± 0.25)% was achieved. The yield was similar to the predicted biodiesel yield of 90.98%. The properties of fatty acid methyl ester produced were in agreement with the standards of EN 14214 and ASTM D6751

• Periodical: Applied Mechanics and Materials (Volume 699)
• Pages: 625-631
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.699.625
• Online since: November 2014
• Authors: Nunung Prabaningrum, Lukman Ismail, Duvvuri Subbarao
• Keywords: In Situ Methanolysis, Jatropha Curcas, Methanol, Response Surface Methodology (RSM), Sodium Hydroxide

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