Biodiesel production from waste oil recovered from spent bleaching earth and investigation of its effects on diesel engine performance and emissions

The increasing energy demand in the World increases the importance of renewable energy sources such as biodiesel, due to the limited use of fossil fuels and their harm to the environment. Biodiesel fuels are environmentally friendly fuels that can be used in diesel engines without any modification. Biodiesel; It can be obtained from various renewable resources such as vegetable, animal and waste oils. In this study, the oil absorbed by the bleaching soil which is released as a waste in the cooking oil refining process was evaluated as a raw material in the production of biodiesel fuel. In the present study, first of all, the waste oil that was absorbed by the AAT was recovered by the extraction process. Then, with the recovered waste bleaching earth oil. The produced biodiesel was mixed at % 10, % 20, % 30 by volüme and B10, B20, B30fuels were obtained. Fuels were tested in a four-cylinder, four-stroke, water-cooled, 1,461-L turbocharged diesel engine with common rail fuel injection system at constant engine speed (1750 rpm) and different engine loads (50 Nm, 75 Nm and 100 Nm).In addition, engine performance and exhaust emission values were ezamined. According to the results obtained; When using biodiesel fuel produced from AATY, it was observed that the specific fuel consumption increased while the exhaust gas temperature decreased. No significant difference was observed in volumetric yield. Finally, an increase was observed in NOx and O2 emissions, while a decrease in smut emissions was observed.