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United States Department of Agriculture

Agricultural Research Service

Title: Hydrocarbon Solvents

Author
item Wan, Peter

Submitted to: Journal of the American Oil Chemists' Society
Publication Type: Book / Chapter
Publication Acceptance Date: September 20, 1997
Publication Date: N/A

Technical Abstract: Extraction of oils has been largely relied on mechanical or heat rendering process for centuries. Demanding in productivity led into the uses of solvents. Solvent extraction of oils had an early beginning. Carbon bisulfide was first used in 1855 to extract fat from bone and wool. Gradually, petroleum hydrocarbons were used to extract oils. The hydrocarbon paraffins became the preferred solvents for oilseed extraction during 1930's through the process of elimination. Hexane rich solvents are efficient and easy to use and still being used today. Regulatory pressure has convinced the oilseed extraction industry to consider alternative solvents. Before an economically feasible and environmentally acceptable solvent is recommended, the industry may be forced to use hydrocarbons which have a less health risk. Isohexane is one of such hydrocarbons and has been successfully tested in a cottonseed plant in 1994. It was also proven to be a cost efficient solvent for an oilseed extraction plant operating at its designed capacity.

Last Modified: 9/20/2014
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