Experimental Analysis of Biofuel and Undistilled Biofuel from Waste Fish Fat in Diesel Engine

Today, it is important to explore the feasibility of substitution of diesel with an alternative fuel, which can be produced within the country on a massive scale for commercial utilization.

Hence, efforts are being made all over the world, to find out an alternative fuel for the diesel engines. Deriving the fuel from waste solves the problem of fossil fuel scarcity and environmental degradation due to industrial wastes. In the present work, the biofuel is derived from industrial waste fish fat for diesel engines. It is produced through catalytic cracking, and its quality has been improved through distillation. A single cylinder 4.5 kW at 1500 rpm was used to find the suitability of biofuel and biofuel UD in diesel engine. The experimental results show that the brake thermal efficiency of biofuel and biofuel UD is almost same. The brake thermal efficiency for diesel, biofuel UD, and biofuel is 29.98%, 32.12%, and 32.4%, respectively. The CO, HC, PM, and NO_x emissions increase with biofuel UD compared to biofuel. There is a small reduction in CO₂ emission with biofuel UD compared to biofuel. Even though the cylinder pressure is high with biofuel UD, the intensity of premixed combustion is less. The ignition delay and combustion duration increased with biofuel UD.

Finally, it is concluded that the fuel derived from industrial waste fish fat can be used as a fuel for diesel engine after distillation.