Optimization of Process Parameter of Biodiesel Derived From a Hybrid Blend of Karanja and Chlorella Vulgaris Oil

Abstract

In this study, the response surface approach was employed to predict and optimize the biodiesel yield. Blend of Karanja and Chlorella vulgaris oil was used in a volumetric ratio of 75:25 to lower the free fatty acid content. The biodiesel production process parameters from this hybrid oil were optimized through a single-step transesterification process. The optimized conditions resulted in a maximum biodiesel yield of 97.55% . These conditions included a catalyst amount of 1.09% (w/w), a reaction time of 91.47 minutes, a reaction temperature of 56.86°C, and a methanol-to-oil molar ratio of 8.46:1. The experimental biodiesel yield was compared with the predicted response obtained from the response surface methodology (RSM). The comparison demonstrated good agreement between the experimental and predicted values.