Study of the temperature to render fat down affecting the biodiesel yield from cow fat by the transesterification reaction method
Keywords:Biodiesel, Transesterification, Cow fat, Render fat down
Animal fats are high in saturated fatty acids, so they are useful in the part of soap making, including biodiesel oils. Its advantage is high heating and low cost. The aim of this research was to study the temperatures to render fat down from cow fat at 150 °C, 200 °C, 250 °C, 300 °C, and 350 °C, ±2 °C affecting the biodiesel oil yield. The transesterification reaction biodiesel production by using the base catalyst including Methanol (CH3OH) and Sodium hydroxide (NaOH). The reaction temperature was controlled at 50 °C. The experiment is carried out with a biodiesel reactor consisting of the rendered set, catalyst mixing tank, and heating set to get rid of water from biodiesel. The trend toward the increased temperature to render fat down also affected the higher FFA and a temperature of 350 °C, this resulted in a higher range of 2.53% of the FFA. The result was found that the optimum temperature for rendering fat down was 250 °C and the biodiesel oil yield was 75.50% by volume, the HHV had a maximum of 41.17 MJ kg–1, and viscosity of 4.60 cSt. Furthermore, it illustrated that the temperature to render fat down that is too high will affect to decrease the biodiesel yield but increase glycerin content.
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