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Optimization of Esterification of Jatropha Oil by Amberlyst-15 and Biodiesel Production  

Choi, Jong-Doo (Department of New and Renewable Energy, Korea Institute of Energy Research)
Kim, Deog-Keun (Department of New and Renewable Energy, Korea Institute of Energy Research)
Park, Ji-Yeon (Department of New and Renewable Energy, Korea Institute of Energy Research)
Rhee, Young-Woo (Department of Chemical Engineering, Chungnam National University)
Lee, Jin-Suk (Department of New and Renewable Energy, Korea Institute of Energy Research)
Publication Information
Korean Chemical Engineering Research / v.46, no.1, 2008 , pp. 194-199 More about this Journal
Abstract
In this study, the effective method to esterify the free fatty acids in jatropha oil was examined. Compared to other plant oils, the acid value of jatropha oil was remarkably high, 11.5 mgKOH/g. So direct transesterification by a base catalyst was not suitable for the oil. After the free fatty acids were esterified with methanol, jatropha oil was transesterified. The activities of four solid acid catalysts were tested and Amberlyst-15 showed the best activity for the esterification. After constructing the experiment matrix based on RSM and analyzing the statistical data, the optimal esterification conditions were determined to be 6.79% of methanol and 17.14% of Amberlyst-15. After the pretreatment, jatropha biodiesel was produced by the transesterification using KOH in a pressurized batch reactor. Jatropha biodiesel produced could meet the major specifications of Korean biodiesel standards; 97.35% of FAME, 8.17 h of oxidation stability, 0.125% of total glycerol and $0^{\circ}C$ of CFPP.
Keywords
Biodiesel; Esterification; Transesterification; Jatropha Oil; Amberlyst-15;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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