Combustion Analysis of Biofuel Derived from Waste Fish Fat

The increase in world population has become a problem in waste management and fuel consumption. Hence, the development of biofuel from waste has gained great attention in recent years to make environment clean. In this present work, the biofuel is derived from waste fish fat by thermal conversion process. The physical and chemical properties of biofuel are very close to diesel fuel. The experiments have been carried out to assess the combustion parameters of biofuel in a diesel engine. Also, analysis of performance and emission characteristics of biofuel were investigated. The combustion parameters like maximum cylinder pressure, rate of heat release, occurrence of maximum peak pressure and heat release rate, ignition delay, and total combustion duration were analyzed. Experimental results indicated a marginal increase in brake thermal efficiency at all loads compared to diesel fuel. The results show that despite of high NOx and CO₂, the engine has lesser UHC, CO, and PM than standard diesel fuel. The premixed and diffusion combustion duration is decreased with biofuel compared to diesel fuel. The engine was running smooth at all load conditions with biofuel. It is concluded that the biofuel derived from waste fish fat can be considered as a substitute for diesel fuel.