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URN etd-0905112-184249 Statistics This thesis had been viewed 1756 times. Download 324 times. Author Liang-yu Huang Author's Email Address No Public. Department Bioengineering Year 2011 Semester 2 Degree Master Type of Document Master's Thesis Language zh-TW.Big5 Chinese Page Count 129 Title Optimized production of biodiesel from waste cooking oils by immobilized lipase on magnetic nanoparticles Keyword immobilized lipase biodiesel response surface methodology response surface methodology biodiesel immobilized lipase Abstract Biodiesel, synthesized from oils/fats and alcohols with catalyst, recently hasbecome an alternative source of renewable fuels and has advantages of non-toxicity and being biodegradable. Aside from acidic and alkaline catalysts, biodiesel production by immobilized lipase have advantages such as mild reaction conditions、easy product separation and using waste cooking oil as raw material to reduce the cost of production. In this study, the optimum condition of Pseudomonas cepacia lipase immobilized onto magnetic nanoparticles was examined and was used as catalyst in biodiesel production from waste cooking oil and the optimization of producing biodiesel was investigated. The results showed that the optimal amounts of immobilized lipase added was 40% weights of oil and there is no difference between three stepwise addition of methanol for 12 h or 24 h after reaction for 72 h. The effects of reaction temperature, substrate molar ratio (methanol/oil), and water content (w/w of oil) were evaluated using response surface methodology (RSM) and were significant. The results showed that the optimal reaction conditions for waste cooking oil were 44.16℃, substrate molar ratio 5.23, water content 12.5%. The predicted and experimental values of fatty acid methyl ester (FAME) content were 80.12% and 79.15%, respectively. Advisor Committee Shiow-Ling Lee - advisor
Cheng-chun Chou - co-chair
Chi-yang Yu - co-chair
Files Date of Defense 2012-07-31 Date of Submission 2012-09-06