Thanh Le Tu, Okitsu Kenji, Sadanaga Yasuhiro, Takenaka Norimichi, Maeda Yasuaki, Bandow Hiroshi
Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan.
Bioresour Technol. 2010 Jan;101(2):639-45. doi: 10.1016/j.biortech.2009.08.050. Epub 2009 Sep 6.
Biodiesel production from canola oil with methanol was performed in the presence of a base-catalyst by a circulation process at room temperature. In this process, the transesterification was accelerated by ultrasonic irradiation of low frequency (20 kHz) with an input capacity of 1 kW. The influences of various parameters on the transesterification reaction, including the amount of catalyst, the molar ratio of methanol to oil and the reaction time, were investigated. The objective of this work was to produce biodiesel satisfying the biodiesel-fuel standards of low energy consumption and material savings. The optimal conditions were: methanol/oil molar ratio of 5:1 and 0.7 wt.% catalyst in oil. Under these conditions, the conversion of triglycerides to fatty acid methyl esters was greater than 99% within the reaction time of 50 min. Crude biodiesel was purified by washing with tap water and drying at 70 degrees C under reduced pressure.
在室温下，以碱催化剂为媒介，通过循环工艺，用菜籽油和甲醇生产生物柴油。在该工艺中，通过输入功率为1千瓦的低频（20千赫）超声辐射来加速酯交换反应。研究了包括催化剂用量、甲醇与油的摩尔比以及反应时间在内的各种参数对酯交换反应的影响。这项工作的目标是生产出符合低能耗和材料节约的生物柴油燃料标准的生物柴油。最佳条件为：甲醇/油摩尔比为5:1，油中催化剂含量为0.7重量%。在这些条件下，在50分钟的反应时间内，甘油三酯向脂肪酸甲酯的转化率大于99%。粗生物柴油通过用自来水洗涤并在70摄氏度减压下干燥进行纯化。
