Analyzing Properties Of Biodiesel Obtained By Synthesis...

Tables 1.4 and 1.5 present the detailed properties of biodiesel obtained by synthesis based on the starting oil, as well as a general guide to biodiesel properties with regard to the type of oil contained in chain departure [29]. Table 1.5 shows that it is advantageous to use an oil with short chain and saturated. Indeed, in this case only the calorific value is not favored. The five most common channels in vegetable oils chains are palmitic, stearic, oleic, linoleic and linolenic. As mentioned above, the FFA content influences the process and the final properties of biodiesel. Table 1.4 – Biodiesel physicochemical proprieties with regard to synthesis used oil [12]. Oil Kinematic viscosity (cSt) Density (Kg.m3) Saponifi -cation value Iodine value Acid value Cetane number Heating value (MJ.Kg-1) Vegetable Soya 4.08 0.885 201 138.7 0.15 52 40 Colza 4.5-5.83 0.88-0.888 - - 0.25-0.45 49-50 45 Sunflower 4.9 0.88 200 142.7 0.24 49 45.3 Palm 4.42 0.86-0.9 207 60.07 0.08 62 34 Peanut 4.42 0.883 200 67.45 - 54 40.1 Corn 3.39 0.88-0.89 202 120.3 - 58-59 45 Camelina 6.12-7 0.882-0.888 - 152-157 0.08-0.52 - - canola 3.53 0.88-0.9 182 103.8 - 56 45 cotton 4.07 0.875 204 104.8 0.16 54 45 Pumpkin seed 4.41 0.884 202 115 0.48 - 38 Jatropha 4.78 0.864 202 108.4 0.496 61-63 40-42 Karanj 4.8 0.883 - - 0.62 60-61 42 Animal Tallow - 0.856 245 126 0.65 59 - Nile tilapia - - - 88.1 1.4 51 - Poultry - 0.867 251 130 0.25 61 - Other Used cooking 4 - - - 0.15 - - Table 1.5 – Influence of lengths