Determination of Diesel Index of biodiesel fuel Produced from Fatty Acid Ethyl Ester Composition by ASTM D-611

One of the quality parameters of combustion is Diesel index (DI) that Indicating thedegree and quality of diesel fuel. One of the methods that can be measured this parameter without spending too much time is the ASTM D 611 standard.

In this study to produce biodiesel fuel was used ethanol and by transesterification method from seven kinds of vegetable oils (corn, soybean, rice bran, grape seed,olive, sunflower and rapeseed) method was used. In order to get the diesel index, determination ofaniline point and the API degree is required. Therefor Aniline point was evaluated by ASTM D611- 04.

The results showed that the values of index of diesel fuels produced form from Fatty Acid Ethyl Ester Composition are in 38-45 range. While the DI value of diesel fuel is 51.56. Also, the results presented that the low values of density of biodiesel fuels is reduced the degree of API.