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首页> 外文期刊>Energy Conversion & Management >Using renewable ethanol and isopropanol for lipid transesterification in wet microalgae cells to produce biodiesel with low crystallization temperature
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Using renewable ethanol and isopropanol for lipid transesterification in wet microalgae cells to produce biodiesel with low crystallization temperature

机译：使用可再生乙醇和异丙醇在湿微藻细胞中进行脂质酯交换以生产低结晶温度的生物柴油

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摘要

Renewable ethanol and isopropanol were employed for lipid transesterification in wet microalgae cells to produce biodiesel with low crystallization temperature and reduce the alcohol volume needed for biodiesel production. Decreased droplet size and lipid polarity were observed after transesterification with alcohol in microalgae cells. Such decrease was beneficial in extracting lipid from microalgae with apolar hexane. The effects of reaction temperature, reaction time, and alcohol volume on microwave-assisted transesterification with ethanol and isopropanol were investigated, and results were compared with those with methanol. Microwave-assisted transesterification with ethanol and isopropanol, which were more miscible with lipid in cells, resulted in higher fatty acid alkyl ester (FAAE) yields than that with methanol when the reaction temperature was lower than 90 degrees C. The ethanol and isopropanol volumes in the transesterification with 95% FAAE yield were only 75% of the methanol volume. The crystallization temperatures (0.19 degrees C and 3.15 degrees C) of biodiesels produced from wet microalgae through lipid transesterification in cells with ethanol and isopropanol were lower than that with methanol (2.08 degrees C), which was favorable for biodiesel flow in cold districts and winter. (C) 2015 Elsevier Ltd. All rights reserved.
机译：可再生乙醇和异丙醇用于湿微藻细胞中的脂质酯交换，以生产具有低结晶温度的生物柴油，并减少了生产生物柴油所需的酒精量。在微藻细胞中与酒精进行酯交换后，观察到液滴尺寸和脂质极性减小。这种减少有利于用非极性己烷从微藻中提取脂质。研究了反应温度，反应时间和醇量对微波辅助乙醇和异丙醇酯交换反应的影响，并将结果与​​甲醇进行了比较。当反应温度低于90摄氏度时，与乙醇和异丙醇更易混溶的乙醇和异丙醇进行微波辅助酯交换反应产生的脂肪酸烷基酯（FAAE）产率高于甲醇。 FAAE收率为95％的酯交换反应仅占甲醇体积的75％。在乙醇和异丙醇的作用下，湿微藻通过脂质酯交换作用产生的生物柴油的结晶温度（0.19摄氏度和3.15摄氏度）低于甲醇和甲醇（2.08摄氏度），这有利于寒冷地区和冬季的生物柴油流动。 。 （C）2015 Elsevier Ltd.保留所有权利。

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  • 来源
    《Energy Conversion & Management》 |2015年第11期|791-797|共7页
  • 作者

    Huang Rui; Cheng Jun; Qiu Yi; Li Tao; Zhou Junhu; Cen Kefa;

  • 作者单位

    Zhejiang Univ, State Key Lab Clean Energy Utilizat, Hangzhou 310027, Peoples R China;

    Zhejiang Univ, State Key Lab Clean Energy Utilizat, Hangzhou 310027, Peoples R China;

    Zhejiang Univ, State Key Lab Clean Energy Utilizat, Hangzhou 310027, Peoples R China;

    Zhejiang Univ, State Key Lab Clean Energy Utilizat, Hangzhou 310027, Peoples R China;

    Zhejiang Univ, State Key Lab Clean Energy Utilizat, Hangzhou 310027, Peoples R China;

    Zhejiang Univ, State Key Lab Clean Energy Utilizat, Hangzhou 310027, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Biodiesel; Ethanol; Isopropanol; Wet microalgae cell; Microwave-assisted transesterification; Crystallization temperature;

    机译：生物柴油乙醇异丙醇湿微藻细胞微波辅助酯交换结晶温度;

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