METHYL-ESTER FROM SAFFLOWER SEED OIL OF TURKISH ORIGIN AS A BIOFUEL FOR DIESEL-ENGINES

The primary problems associated with the use of pure vegetable oils as fuels in compression ignition (Diesel) engines are caused by high fue l viscosity. Transesterification of the oil with short-chain alcohols (such as methanol or ethanol) to corresponding fatty esters is the mos t promising solution to the high-viscosity problem. In this work, the transesterification method was applied to crude safflower seed oil of Turkish origin using methanol. The variables affecting the monoester y ield, such as: 1. Molar ratio of alcohol to vegetable oil; 2. Reaction temperature; and 3. Type and amount of alkali catalyst used were inve stigated. In the presence of 1.0 wt% KOH as the reaction catalyst, 97. 7% ester yield was achieved within 18 min at a reaction temperature of 69 +/- 1 degrees C using 1:7 vegetable oil-alcohol molar ratio. A sig nificant improvement was observed in viscosity and other physical prop erties with the ester product compared to the parent vegetable oil. AS TM fuel properties of the methyl ester product were in accordance with those obtained for commercial Grade No.2-D diesel fuel.