The present study demonstrates innovative and industrially viable in-situ biodiesel production process using coordinated ultrasound-microwave reactor. Reactive extraction process has been carried out by mixing grinded castor seeds with methanol in the presence of base catalyst (KOH). Response surface methodology coupled with central composite design has been applied for process optimization to achieve maximum yield. The result shows that maximum biodiesel yield of 93.5 ± 0.76 % was obtained under favorable conditions of: molar ratio (350:1), catalyst(w/w) (1.74%), reaction temperature (43°C) and reaction time (30 min). Regression equation obtained for the model having (R2), and (R²_adj) equal to 0.9737 and 0.9507 respectively shows goodness of fit. First time reaction kinetics as well as oil extraction kinetics studies have been performed on coordinated ultrasound-microwave reactor. Assuming pseudo first order reaction activation energy was found to be 28.27 kJ.mol^-1 and activation energy for oil extraction was observed to be 9.11 kJ mol^-1. Estimated activation energy for the reaction kinetics and extraction kinetics was reduced by 27%, reaction rate constants were eight to ten times higher and diffusion coefficient was found to be two times higher in case of hybrid system as compared to conventional mechanical stirring technique. Estimated thermo-physical properties of biodiesel were found in agreement with ASTM and DIN standards in comparison to gasoline diesel.

本研究证明了使用协调的超声波-微波反应器的创新型和工业上可行的原位生物柴油生产工艺。在碱催化剂（KOH）的存在下，通过将碾碎的蓖麻籽与甲醇混合，进行了反应萃取工艺。响应面方法与中央复合设计相结合已被用于过程优化，以实现最大的产量。结果表明，在以下有利条件下，生物柴油的最大产率为93.5±0.76％：摩尔比（350：1），催化剂（w / w）（1.74％），反应温度（43°C）和反应时间（30）分钟）。为具有（R2）和（R ² _adj）分别等于0.9737和0.9507表示拟合优度。已在协同超声-微波反应器上进行了首次反应动力学以及油萃取动力学研究。假设发现拟一级反应的活化能为28.27 kJ.mol ^-1，而油萃取的活化能为9.11 kJ.mol ^-1。与传统的机械搅拌技术相比，在混合系统中，估计的反应动力学和萃取动力学活化能降低了27％，反应速率常数提高了8到10倍，扩散系数提高了2倍。与汽油柴油相比，生物柴油的估计热物理性质符合ASTM和DIN标准。