The present study aims at providing an insight into the apparent kinetics and mass transfer studies on the synthesis of biodiesel from rubber seed oil using indigenously developed carbonaceous catalyst. The carbon-supported catalyst developed from waste biomass is used in transesterification of rubber seed oil and effects of synthesized porous catalyst on the kinetics and mass transfer has been extensively analyzed. The apparent kinetic models for individual steps have been developed following power law, Eley–Rideal (E–R) and Langmuir–Hinshelwood (L–H) mechanisms. Moreover, effects of mass transfer and catalyst properties on the kinetics have been also evaluated. The experimental data has been gathered for studying the apparent kinetics at different temperatures using same catalyst and best fitting of the data in developed apparent kinetic models was estimated by regression coefficient (R²) and comparing experimental and predicted concentrations of each reactant and product species. The analysis of the experimental data and fitting of kinetic models revealed that desorption of the glycerol from the catalyst active sites is the slowest step and controlling the overall rate of reaction. Moreover, mass transfer effects on the conversion and kinetics were negligible and conversion was solely controlled by the catalysts surface properties.

本研究旨在提供对使用本地开发的碳质催化剂从橡胶籽油合成生物柴油的表观动力学和传质研究的真知灼见。由废生物质开发的碳载催化剂用于橡胶籽油的酯交换反应，并已广泛分析了合成的多孔催化剂对动力学和传质的影响。遵循幂律，Eley–Rideal（E–R）和Langmuir–Hinshelwood（L–H）机理开发了各个步骤的表观动力学模型。此外，还评估了传质和催化剂性质对动力学的影响。²）并比较每种反应物和产物种类的实验浓度和预测浓度。对实验数据的分析和动力学模型的拟合表明，甘油从催化剂活性位点解吸是最慢的步骤，并控制了总反应速率。而且，传质对转化率和动力学的影响可忽略不计，转化率仅由催化剂的表面性质控制。