Abstract
The yield and fuel properties of biodiesel fuel (BDF) produced from animal fats by the existent method from vegetable fats were analyzed. The following results were obtained; (1) Animal fats can yield BDF by the existent method from vegetable fats. However, the cold filter plugging point (CFPP) of BDF from animal fat is higher than that of vegetable fat. (2) CFPP is nearly equal to the value calculated by the solid-liquid equilibrium assuming that methylpalmitate (C16Me) and methylstearate (C18Me) are solid components. It is suggested that decreasing the amount of C16Me and C18Me improves CFPP. (3) The storage stability and combustion property of BDF are improved by increasing the amount of saturated fatty acid methyl ester, on the contrary. (4) Animal fats can produce BDF of suitable properties by controlling the amount of C16Me and C18Me in the appropriate range.
