Waste To Energy Conversion Through Biodiesel Production From Waste Cooking Oil And Its Optimization

IJEP 41(5): 503-512 : Vol. 41 Issue. 5 (May 2021)

Nabanita Banerjee and Tushar Jash*

Jadavpur University, School of Energy Studies, Kolkata – 700 032, West Bengal, India


The study comprises one of the methods of waste management by conversion of waste cooking oil to a sustainable form of energy. It carries out the production of biodiesel from waste oil which is disposed of in such a manner that it can be a serious threat to the environment in near future. Large scale production of biodiesel from this waste oil can be a permanent solution of waste to energy conversion. In this study, the operating parameters, namely catalyst concentration, methanol: oil ratio and reaction temperature were varied at three different levels using response surface methodology (RSM). The R2 value is 0.9771 which indicates that there is a good fit between the given model and the experimental data. Based on the experimental results, the optimum operating parameters from transesterification of waste soybean oil at a stirring rate of 1000 rpm and 2 hr reaction time at a temperature of 520C, the molar ratio of 7.7:1 and catalyst concentration of 1.157% w/w of oil. Biodiesel production has been carried out with the optimized parameters to obtain the corresponding laboratory yield. The predicted and laboratory yields were 93.408% and 93.06%, respectively which denotes that variation is 0.348%. 2D and 3D contour plotting has been done using MINITAB17 for the prediction of optimized yield. The physical and the chemical properties have been compared and the relationship has been studied.


Biodiesel, Waste, Energy, Response surface methodology, Transesterification, Used soybean oil


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