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Influence of Reaction Parameters on Preparation of Biodiesel from Palm Oil using Supercritical Methanol  

Ryu, Jae-Hun (Department of Chemical Engineering, Hanyang University)
Lee, Si-Hong (Department of Chemical Engineering, Hanyang University)
Shin, Hee-Yong (Department of Chemical Engineering, Hanyang University)
Bae, Seong-Youl (Department of Chemical Engineering, Hanyang University)
Publication Information
Korean Chemical Engineering Research / v.47, no.5, 2009 , pp. 651-654 More about this Journal
Abstract
In this study, non-catalytic transesterification using supercritical methanol was performed for preparation of biodiesel from palm oil. In order to investigate the effects of reaction parameters such as molar ratio of methanol to oil(30:1~60:1), pressure(8~25 MPa), temperature($320{\sim}350^{\circ}C$), agitation speed(0~1,000 rpm) and time(0~20 min) on the content of fatty acid methyl esters(FAMEs), we carried out the study using a batch reactor. With increasing molar ratio of methanol to oil, the content of FAMEs increased. However, the content of FAMEs was little affected by molar ratio above 45 and pressure above 20 MPa. The content of FAMEs increased when the temperature increased. However, the content of FAMEs decreased with temperature above at $350^{\circ}C$ and with time above 5 min. It was found that the agitation speed above 500 rpm scarcely affected the content of FAMEs. The highest content of FAMEs in biodiesel(95%) was obtained under the reaction conditions: temperature of $335^{\circ}C$, pressure of 20 MPa, molar ratio of 45:1(methanol to palm oil), agitation speed of 500 rpm and time of 10 min.
Keywords
Biodiesel; Palm Oil; Supercritical Methanol; Transesterification;
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