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题名: Optimization of an effective method for the conversion of crude algal lipids into biodiesel
作者: Wu, Sha1, 2; Song, Lirong1; Sommerfeld, Milton3; Hu, Qiang1, 3; Chen, Wei1, 3
关键词: Biodiesel ; Microalgae oils ; Enzymatic transesterification ; Lipase
刊名: FUEL
发表日期: 2017-06-01
DOI: 10.1016/j.fuel.2017.02.040
卷: 197, 页:467-473
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ; Technology
类目[WOS]: Energy & Fuels ; Engineering, Chemical
研究领域[WOS]: Energy & Fuels ; Engineering
英文摘要: Although microalgae represent a promising alternative feedstock for biofuels, the current solvent-based lipid conversion systems and processes are neither cost-effective nor energy-efficient due to the bad quality of algal crude lipids. In the present study, a novel lipase-catalyzed transesterification method with crude Chlorella lipids was systematically investigated and optimized. A highly efficient conversion protocol with 97% of fatty acid methyl esters (FAME) yield was obtained after the introduction of co-solvent. Then several crucial parameters including the reaction time, molar ratio of algae oils to methanol, ratio of algae oils to co-solvent, ratio of algae oils to lipase and reaction temperature and intensively studied and selected at 12 h, 1: 12, 1: 1 (m/v), 20: 1 (m/m) and 40 degrees C, respectively. In addition, the reusability of the immobilized lipase was also investigated with crude algal lipids. The immobilized lipase could maintain 84% of its original activities even after five recycles. Polar lipid standards along with the polar lipids isolated from crude algal lipids were also tested and results indicated that they could also be converted into biodiesel very efficiently. This study provides an important insight into further decreasing the downstream processing costs in algae-based biofuel production. (C) 2017 Elsevier Ltd. All rights reserved.
关键词[WOS]: LIPASE-CATALYZED TRANSESTERIFICATION ; WASTE-WATER TREATMENT ; ENZYMATIC PRODUCTION ; IMMOBILIZED LIPASE ; BIOFUEL PRODUCTION ; MICROALGAE ; OIL ; PERSPECTIVES ; SOLVENT ; ENERGY
语种: 英语
项目资助者: National Natural Science Foundation of China(41276150) ; National 863 project(2013AA065804)
WOS记录号: WOS:000398669900048
ISSN号: 0016-2361
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内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/29061
Appears in Collections:藻类生物技术和生物能源研发中心_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Hydrobiol, Key Lab Algal Biol, Wuhan 430072, Hubei, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China
3.Arizona State Univ, Dept Appl Sci & Math, 7001 E Williams Field Rd, Mesa, AZ 85212 USA
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