In the present research, an innovative oscillatory slug flow reactor (OSFR) under the treatment of gas–liquid phase pulsed discharge plasma was developed for biodiesel production. The main goal was continuous production of high quality biodiesel at low temperature and pressure. Experimental tests were carried out under the influence of four main operating parameters including applied voltage, molar ratio, reactant flow rate, and catalyst concentration. The response surface method was employed to optimize experimental tests. The results showed that the proposed technology provided 94% production efficiency under the optimal conditions of voltage 19.4 kV, molar ratio 6.4, flow rate 2.7 ml/s, and catalyst 0.9 wt. %. According to the statistical analysis, increasing the applied voltage and reducing the flow rate have a strong effect on the Fatty Acid Methyl Ester yield, while the concentration of potassium hydroxide and methanol have less effect on the overall efficiency. In addition, the characteristics of the produced biodiesel were in accordance with ASTM D6751 standards. Surprisingly, the optimal energy consumption in this system was 95 kJ/l, which is more economically viable. In general, this study showed that the combined system of gas/liquid phase plasma in the OSFR reactor has a high synergistic potential for the transesterification reaction.

中文翻译：

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在新型振荡段塞流反应器中使用气/液相脉冲放电等离子体优化甲酯合成

在本研究中，开发了一种采用气液相脉冲放电等离子体处理的创新型振荡段塞流反应器（OSFR），用于生物柴油生产。主要目标是在低温低压下连续生产高品质生物柴油。在施加电压、摩尔比、反应物流量和催化剂浓度四个主要操作参数的影响下进行了实验测试。采用响应面法来优化实验测试。结果表明，该技术在电压19.4 kV、摩尔比6.4、流量2.7 ml/s、催化剂0.9 wt的最佳条件下，生产效率达到94%。 %。根据统计分析，增加外加电压和降低流量对脂肪酸甲酯收率影响较大，而氢氧化钾和甲醇浓度对整体效率影响较小。此外，所生产的生物柴油的特性符合ASTM D6751标准。令人惊讶的是，该系统的最佳能耗为 95 kJ/l，这在经济上更可行。总的来说，这项研究表明OSFR反应器中的气/液相等离子体组合系统对于酯交换反应具有很高的协同潜力。