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URN etd-0812110-164533 Statistics This thesis had been viewed 2250 times. Download 383 times. Author Jiun-Shiuan Shiu Author's Email Address No Public. Department Chemical Engineering Year 2009 Semester 2 Degree Master Type of Document Master's Thesis Language English Page Count 83 Title TRANSESTERIFICATION OF PLANT OIL CATALYZED BY TRI-POTASSIUM PHOSPHATE Keyword SOLID CATALYST TRANSESTERIFICATION TRANSESTERIFICATION SOLID CATALYST Abstract Biodiesel is a renewable fuel, most commonly produced from transterification of
vegetable oils with low molecular weight alcohols using homogeneous catalyst. In
homogeneous catalytic reaction, soap formation will hinder the reaction process and also
cause environmental pollution. Finally, extra cost for the neutralization, distillation, and
washing steps needed to purify the final product is too high for industries. In this study,
heterogeneous solid catalyst (K3PO4) was used for transesterification reaction in batch
and well-stirred reactor. The experimental design methodology was employed to find the
main influencing factors, including reaction temperature, methanol to oil molar ratio,
catalyst amount and reaction time. The experimental results show that increasing the
reaction temperature has little effect on the biodiesel yield, increasing the molar ratio of
methanol to oil or catalyst amount can increase the biodiesel yield. The HPLC analysis
results show triglyceride decreases with the reaction time, while diglyceride and
monoglyceride increases with the reaction time. The 3-step kinetic model can be used to
predict the transesterification kinetic curves satisfactorily.
Advisor Committee Jia-Ming Chern - advisor
Fu-Chang Huang - co-chair
RONG-CHI WANG - co-chair
Files Date of Defense 2010-07-30 Date of Submission 2010-08-12