English  |  正體中文  |  简体中文  |  全文笔数/总笔数 : 50123/85142 (59%)
造访人次 : 7906827      在线人数 : 56
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library & TKU Library IR team.
搜寻范围 查询小技巧:
  • 您可在西文检索词汇前后加上"双引号",以获取较精准的检索结果
  • 若欲以作者姓名搜寻,建议至进阶搜寻限定作者字段,可获得较完整数据
  • 进阶搜寻

    jsp.display-item.identifier=請使用永久網址來引用或連結此文件: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/78517

    题名: Comparison Of Biodiesels Produced From Waste And Virgin Vegetable Oils
    作者: Hung, Yi-shun' Chen, Yi-hung;Shang, Neng-chou;Chang, Cheng-hsin;Li, Tsung-lung;Chang, Ching-yuan;Shie, Je-lueng
    贡献者: 淡江大學土木工程學系
    关键词: Biodiesel;waste vegetable oil;esterification;transesterification;fuel properties
    日期: 2010-11
    上传时间: 2012-10-09 10:05:51 (UTC+8)
    出版者: Chinese Institute of Environmental Engineering
    摘要: In this study, a two-step process (acid catalyzed esterification followed by alkali catalyzed transesterification) was employed to convert waste vegetable oil (WVO), which showed the free fatty acids of 1.33 wt%, acid value of 2.66 mg KOH g-1, and the kinematic viscosity at 40 °C of 39.5 mm2 s-1, into the biodiesel. The WVO biodiesel was synthesized under the following conditions: the methanol to oil molar ratio of 6, the H2SO4 catalyst dosage of 0.5 wt% based on the oil weight, and the reaction temperature of 45 °C for the acid catalyzed esterification; the methanol to oil molar ratio of 9, the KOH catalyst dosage of 2 wt% based on the oil weight, and the reaction temperature of 60 °C for the alkali catalyzed transesterification. The acid values of the esterified WVO and the WVO biodiesel were determined as 1.42 and 0.18 mg KOH g-1, respectively. In addition, a single-step process (alkali catalyzed transesterification) was used to convert virgin vegetable oil (VVO) to biodiesel for comparison. These two oils were successfully converted to biodiesel while the ester contents of the WVO and VVO biodiesels were 98.8% and 99.3%, respectively. As a result, the WVO biodiesel had less polyunsaturated fatty acid methyl esters, higher kinematic viscosity, and lower oxidation stability compared to those of the VVO biodiesel. Furthermore, the fuel properties of two biodiesels can satisfy most biodiesel standards except the cold filter plug point and oxidation stability.
    關聯: Sustainable Environment Research 20(6), pp.417-422
    显示于类别:[土木工程學系暨研究所] 期刊論文


    档案 大小格式浏览次数
    1022-7630_20(6)p417-422.pdf279KbAdobe PDF110检视/开启



    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library & TKU Library IR teams. Copyright ©   - 回馈