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URN etd-0827110-191824 Statistics This thesis had been viewed 2777 times. Download 958 times. Author Hsin-Chih Huang Author's Email Address No Public. Department Chemical Engineering Year 2009 Semester 2 Degree Master Type of Document Master's Thesis Language Chinese&English Page Count 102 Title Transesterification of Soybean Oil to Biodiesel Using Immobilized Candida Antarctica Lipase Keyword Candida Antarctica Lipase Soybean Oil Transesterification Biodiesel Biodiesel Transesterification Soybean Oil Candida Antarctica Lipase Abstract The transesterification of soybean oil and methanol was investigated with a cheap, commercially immobilized enzyme from candida antarctica in an incubator shaker. The optimum conditions of the transesterification in batch system are as follows: 5 wt% lipase based on oil weight; oil/methanol molar ratio 1:4; 1 wt% water; reaction temperature at 40℃; vibration speed at 200 rpm; reaction time for 72 h, and the maximum methyl esters yield is 88%. The yield is 58% after being repeatedly used for 6 times when tert-butanol is adopted to wash lipase. The optimum conditions of the transesterification in a glass-made fluidized bed at room temperature are as follows: 5% lipase based on oil weight; oil/methanol molar ratio 1:3; flow rate at 200 ml/min; reaction time for 72 h, and the maximum methyl esters yield is 63%. The results show that the transesterification reaction can be processed in mass production at room temperature. Advisor Committee Rong-Chi Wang - advisor
Fu-Chang Huang - co-chair
Files Date of Defense 2010-07-30 Date of Submission 2010-08-30