Feasibility Studies on Spent Coffee Powder Oil as Alternative to Diesel in CI Engines

Abstract

In the current work, oil is removed from spent coffee powder utilizing a chemical extraction method. The properties of acquired biodiesel are found out, and it very well may be inferred that the properties of got biodiesel are within ASTM norms. To augment the yield of biodiesel, Taguchi strategy is utilized to improve the response parameters like methanol to oil proportion, catalyst concentration, reaction temperature, reaction time. An improvement of yield up to 15% was found by using Taguchi strategy. Heating value of the produced fuel is competitive with the diesel. The biodiesel blends are tested in a 4S single chamber compression ignition engine to get to the performance and outflow attributes. It is seen that most elevated thermal efficiency is acquired at B20 blend which is 1.33% more than that of diesel at full load and least specific fuel consumption at B20 at full load was 0.15% lesser than diesel. As for emissions, there was a noteworthy decrease in CO, CO2, and HC while NOx discharges expanded marginally.