Abstract:
Hevea rubber seed oil is very useful in industries especially in paint industry. Besides, this oil is also used as fuel substitute. Generally, oil is extracted from seeds by mechanical means, but in this work the solvent, petroleum ether, was used to extract oil in an agitated tank of 16 cm. in diameter. This research work was carried out to study the extracting conditions as well as the chemical and physical properties of the extracted oil. An attempt was also made to compare the equations obtained with those equations from rice bran oil previously studied. The variables used in this study were 1. size of Hevea rubber seed oil from <1 mm., 1-2 mm. and 2-3 mm. 2. speed of the impeller ranging from 700 to 1860 rpm. 3. ratio by weight of seed to solvent (S/L) ranging from 1/3.0 to 1/5.5 The experimental results showed that the smaller size of Heavea rubber seed, the higher oil yield was obtained. The similar trends was also obtained for higher speed and lower S/L ratio. The results could also be presented mathematically for oil yield and mass transfer coefficient as follows for the < 1 mm. size: [Equation] During the first 40 minutes; [Equation] During 50 180 minutes; [Equation] for the 1 2 mm. size: [Equation] During the first 40 minutes; [Equation] During 50 180 minutes; [Equation] for the 2 3mm. size: [Equation] During the first 40 minutes; [Equation] During 50 180 minutes; [Equation]