In recent years, biodiesel has been proving to be a remarkable alternative for petro-diesel. In this research study, an effort has been made to improve the yield of biodiesel by using a synthesised novel deep eutectic solvent (DES). The synthesised DES of different composition was checked for its superiority for biodiesel production using sesame oil. Experiments were conducted with different parameters such as molar ratio of alcohol to oil and agitation speed at fixed temperature and contact time. The molar ratio of methanol to oil is 8:1, at a temperature of 60°C and a reaction time of 60 min proved to be the optimum condition for DESs. All tested DESs have been able to improve the yield of biodiesel compared to non-DES. The highest yield of biodiesel (97·8%) has been achieved by using ethylene glycol as the hydrogen donor in the ratio 1:2 and at a molar ratio of 8:1 with agitation speed of 1200 r/min. All the properties of prepared biodiesel met the American Society for Testing and Materials standards such as viscosity, flash point and specific gravity. The synthesised choline chloride-DES proved to be effective in improving the yield of biodiesel and thus can be used as an alternative to ionic liquids.

中文翻译：

---

含深共熔溶剂的生物柴油生产的实验研究

近年来，生物柴油已被证明是石油柴油的绝佳替代品。在这项研究中，已通过使用合成的新型深共熔溶剂（DES）努力提高生物柴油的收率。检查了不同组成的合成DES对使用芝麻油生产生物柴油的优越性。在不同的参数下进行实验，例如酒精与油的摩尔比以及在固定温度和接触时间下的搅拌速度。在60°C的温度下，甲醇与油的摩尔比为8：1，反应时间60分钟被证明是DES的最佳条件。与非DES相比，所有经过测试的DES都能够提高生物柴油的产量。通过使用乙二醇作为氢供体，比例为1，可以实现最高的生物柴油收率（97·8％）：搅拌速度为1200 r / min时，摩尔比为8：1时为2。制备的生物柴油的所有特性均符合美国测试与材料学会的标准，例如粘度，闪点和比重。合成的氯化胆碱-DES被证明可有效提高生物柴油的收率，因此可以用作离子液体的替代品。