| Summary: | 碩士 === 中臺科技大學 === 食品科技研究所 === 104 === In this study, using two different methods of conventional and microwave heating produce biodiesel. Parameters including kinds of catalyst, time of heating are investigated by yield of fatty acid methyl esters (FAME).
The results show two parts, in traditional heating method, without adding catalyst for heating 8 hours, and its yield is less than 10%. Adding basic catalyst (NaOH) for heating 8 hours, and its yield can increase up to 93%. However, a new solid catalyst (SBA-16) for heating 8 hours, its yield is only 13%. In microwave heating method, without adding catalyst for heating 20 minutes, its yield is less than 10%. Adding basic catalyst (NaOH) for heating 20 minute, its yield is over 87%, however, if adding SBA-16 catalyst for heating 20 minutes, its yield is still less than 17%.
Based on the above results, the use of conventional and microwave heating methods with different types of catalysts or not, will produce various yield of biodiesel. The best way is using microwave heating with basic catalyst (NaOH) in 5 minutes gives the highest yield up to 93%, however basic catalyst could cause problems of waste water. Although the use of the new solid catalyst (SBA-16) did not obtain the yield like that with basic catalyst (NaOH). But the new catalyst can reduce waste water and is friendly environmental method. In the future, we try to modify and improve the new solid catalyst in order to increase the yield of transesterification.
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