Soybean Oil Case Study

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Introduction One of the most basic needs of mankind is an abundant and reliable food supply. In the modern world, one major source of vegetable oil is from oil seeds, particularly the soybean- an abundant resource which is mainly processed using pressing (in India) and solvent extraction (in USA). Solvent extraction is one of the most efficient and reliable means to extract out soybean oil from soybean seeds. The second most prevalent solvent extracted oil seed is rapeseed and/or the varieties called Canola. Sunflower is also extracted in large quantities. A secondary use for soybean oil which has become very much popular in recent years, is its use as feedstock for biodiesel fuels for diesel engine and many other products such as oelochemicals made from…show more content…
It does appear to have a high slightly greater capability of dissolving soybean oil perhaps due to various isomers present in it. Hexane has about the best characteristics of the many solvents tried over the years. With a boiling point of 69˚C it is a liquid in all but the most extreme climates of the world. With a fairly high volatility and a low sensible heat of 335 kJ/kg it is relatively easy to remove from the solids and oil with low energy use. It has an azeotrope, a slightly reduced 61.6˚C boiling temperature when in the presence of water or steam and resulting in a vapor coming off at about 95% by weight hexane and 5% by weight water. This azeotrope has proved itself to be efficient for removal of solvent from solids using direct steam contact. Hexane has proved itself to be of convenient use considering the danger aspects of use of hexane for a long period of time. It does not readily mix with water, allowing a fairly simple process to keep it in the system while water passes through in the process in form of moisture in seed, meal, oil or air. Hexane has a good capability of dissolving vegetable oil so that it can wash the oil from fibrous or solid

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