Optimization of a novel liquid-phase plasma discharge process for continuous production of biodiesel

JOURNAL OF CLEANER PRODUCTION

卷:228

Article

Wu, Sarah¹  Deng, Shaobo²  Zhu, Jun³  Bashir, Muhammad Aamir¹  Izuno, Forrest² 

[1] Univ Idaho, Biol Engn, Moscow, ID 83844 USA

[2] Univ Minnesota, Southern Res & Outreach Ctr, Waseca, MN 56093 USA

[3] Univ Arkansas, Biol & Agr Engn, Fayetteville, AR 72701 USA

关键词: Liquid-phase plasma discharge;    Soybean oil;    Transesterification;    Biodiesel;    System optimization;   

DOI  :  10.1016/j.jclepro.2019.04.311

来源: Elsevier

【 摘 要 】

The conventional transesterification process employed in biodiesel production from vegetable oils is not only a time-consuming process but operated under raised temperatures. A novel liquid-phase plasma discharge process was developed and evaluated in this study. The process could continuously convert soybean oil to biodiesel under room temperature at a much faster rate than the conventional method. Two feeding flowrates (2.7 ml s(-1) and 4.1 ml s(-1)) were used in the experiments. Methanol to oil molar ratio, R-momr, and NaOH to oil weight ratio, R-NaOWR, were each examined at five levels (3, 4, 5, 6, and 7 for R-momr and 0.4, 0.6, 0.8, 1.0, and 1.2 wt% for R-NaOWR). Central Composite Design and Response Surface Methodology to optimize the conversion rate and applied voltage was conducted. At the flowrate of 2.7 ml s-1, the optimal values of R-momr R-NaOWR, conversion rate, and applied voltage were 5.08, 0.79 wt%, 97.2%, and 1.17 kV, respectively. While at 4.1 ml s(-1), these values became 5.18, 0.70 wt%, 99.74%, and 1.27 kV. All regression models generated by the Central Composite Design and Response Surface Methodology fitted the experimental data well. The biodiesel produced by the novel liquid-phase plasma discharge process met the industrial quality standards (ASTM Standards). (C) 2019 Elsevier Ltd. All rights reserved.

【 授权许可】

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