Design, manufacturing and testing of hydraulic press to produce the oil from Egyptian Jatropha seeds

Abstract

Increase of fossil fuel consumption rates, depletion of conventional fuel, harmful exhaust emissions increase and global warming. This concludes to search for alternative fuels. This study was performed to produce a suitable alternative fuel. The produced oil from non-edible jatropha seeds becomes researcher's interest because of the higher price of edible vegetable oils. Design, manufacturing, and testing of an efficient system to produce the oil from Egyptian jatropha seeds was carried out. This hydraulic press squeezes jatropha seeds to produce the oil. It is designed to obtain the maximum oil yield. Physical and chemical parameters such as specific gravity, kinematic viscosity, calorific value, flash number and cetane number of the extracted oils were measured. Time of oil extracted from jatropha seeds is 720 minutes at a yield of 11%. The extracted Jatropha oil gave light color because of its low FFA of 5%. The density and viscosity of the extracted oil decreased as the temperature increases. The flash point of the oil is higher than diesel oil. Calorific value of the produced jatropha oil was 39201 kJ/kg. Jatropha biodiesel oxidation instability increased for hydraulic extraction due to its content of oleic and linoleic acids.

The Phenomenon of Biodiesel Heating: Its Effect on Viscosity, Density, and Emission

“…Experiments have been carried out on several types of biodiesel including jatropha, gutter, and rubber with heating methods from 10 o C -80 o C. The experimental results show that an increase in temperature causes a decrease in the viscosity number of all types of biodiesel [5]. Increasing the temperature of biodiesel reduces the density and viscosity of jatropha oil biodiesel fuel [6].…”