Düşük viskoziteli atık kızartma yağı etil esteri üretimi.

Some of the most important advantages of biodiesel, which is a renewable and environmentally friendly fuel, are that it has higher flash point and cetane number, compared to diesel fuel. According to the notification on "blending of biodiesel with diesel fuel" published by the Energy Market Regulatory Authority, it has become mandatory to add 0.5% volume ratio of biodiesel to diesel fuel as of 1.1.2018. In addition, The European Parliament's Directive on biofuels (2003/30/EC) makes compulsory the use of renewable fuels at least 10% in 2020 for member countries. Despite the superior properties of biodiesel, its production cost and viscosity are high. The high production cost prevents the more widespread use of biodiesel, and the high viscosity decreases engine performance and increases exhaust emissions. Therefore, in this study, for reducing production cost and viscosity, the effects of transesterification reaction parameters on the viscosity of produced waste cooking oil biodiesel were investigated as a full matrix to determine the optimal values giving the lowest viscosity. The viscosity value of biodiesel produced under the optimal parameters in this study was also compared to that of biodiesels produced in different studies. According to experimental results, it has been specified that the biodiesel, produced the optimal reaction parameters such as potassium methoxide concentration of 1.25%, ethyl alcohol to oil molar ratio of 10.5:1, the reaction temperature of 70 °C and reaction duration of 121 minutes, has the lowest viscosity of 3.595 mm²/s (cSt). The fuel properties of produced biodiesel are in accordance with EN 14214. Moreover, it has been determined that the viscosity value (3.595 mm²/s) obtained in this study is lower than the viscosity values reported in the literature. [ABSTRACT FROM AUTHOR]