https://scholars.lib.ntu.edu.tw/handle/123456789/407985
標題: | Microalgae harvesting and subsequent biodiesel conversion | 作者: | Tran D.-T. Le B.-H. Lee D.-J. Chen C.-L. Wang H.-Y. Chang J.-S. |
關鍵字: | Chlorella vulgaris;Coagulation;Immobilized lipase;Transesterification | 公開日期: | 2013 | 卷: | 140 | 起(迄)頁: | 179-186 | 來源出版物: | Bioresource Technology | 摘要: | Chlorella vulgaris ESP-31 containing 22.7% lipid was harvested by coagulation (using chitosan and polyaluminium chloride (PACl) as the coagulants) and centrifugation. The harvested ESP-31 was directly employed as the oil source for biodiesel production via transesterification catalyzed by immobilized Burkholderia lipase and by a synthesized solid catalyst (SrO/SiO2). Both enzymatic and chemical transesterification were significantly inhibited in the presence of PACl, while the immobilized lipase worked well with wet chitosan-coagulated ESP-31, giving a high biodiesel conversion of 97.6% w/w oil, which is at a level comparable to that of biodiesel conversion from centrifugation-harvested microalgae (97.1% w/w oil). The immobilized lipase can be repeatedly used for three cycles without significant loss of its activity. The solid catalyst SrO/SiO2 worked well with water-removed centrifuged ESP-31 with a biodiesel conversion of 80% w/w oil, but the conversion became lower (55.7-61.4% w/w oil) when using water-removed chitosan-coagulated ESP-31 as the oil source. ? 2013. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/407985 | ISSN: | 09608524 | DOI: | 10.1016/j.biortech.2013.04.084 |
顯示於: | 化學工程學系 |
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