碩士 / 國立臺灣海洋大學 / 輪機工程學系 / 103 / A high-temperature and high-pressure reactor was used to carry out in-situ lipid extraction and transesterification for microalgae in this study. The effects of the catalyst types, amount of co-solvent added, reaction time, and reaction temperature on the characteristics of extracted lipid and fatty acids methyl esters (FAMEs) produced from the microalgae were investigated. The fuel properties including heating value, cetane number, and oxidation stability were derived from the structures of microalgae fatty acids. The experimental results showed that the microalgae FAMEs were primarily composed of C16:0 and C18:3. If KOH was the catalyst, the highest amount of FAMEs was obtained under the conditions of reaction temperature 100℃ , reaction time 30 min, and 90% n-hexane amount. For the catalyst CH3COOH, the FAMEs produced under 70% n-hexane amount used, reaction temperature 220℃, and reaction time 60 min appeared to have the highest FAME amount and cetane number. Moreover, the produced FAMEs using the catalyst CH3COOH were observed to have higher cetane number and oxidation stability than those using KOH. In addition, the reaction time of in-situ transesterification was significantly reduced with the increase of reaction temperature from 100℃ to 220 ℃. Keywords: In-situ transesterification, co-solvent, microalgae, fatty acid methyl esters, fuel property.
| Identifer | oai:union.ndltd.org:TW/103NTOU5484006 |
| Date | January 2015 |
| Creators | Hsieh, Ya-Chen, 謝亞辰 |
| Contributors | Lin, Cherng-Yuan, 林成原 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 54 |
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