Optimizing Bio-diesel Production by Transesterification for Internal Combustion Engines
Biodiesel is an attractive alternative diesel fuel that can be obtained by transesterification of vegetable oils and animal fats. The conventional base-catalyzed transesterification reaction is affected by many factors. The objective of this study was to investigate the effect of process variables on base-catalyzed transesterification and develop a cost-efficient processor to produce biodiesel using low cost feedstock such as used frying oils and thereby demonstrating the efficiency of the biodiesel in an internal combustion engine. To compare the effects different reaction time and temperature settings were compared to check the quality of the biodiesel. Lowest temperatures at about 30◦C is observed to produce biodiesel without any emulsions. Large-batch of about 7.5 gallons of biodiesel is produced using a tank processor that utilizes solar energy as a required heat source and the mixing is provided by a paint mixer. On-road testing of the biodiesel produced is performed following the TMC/SAE fuel consumption test procedure - Type -II. A 21% increase in Engine Load is observed with 15% increase in Throttle Position Angle while running on Biodiesel. A 6 % decrease in fuel economy is observed with biodiesel when compared to diesel.