Methods for recovering a solvent from a fluid volume and methods of removing at least one compound from a nonpolar solvent

Ginosar, Daniel M.; Wendt, Daniel S.; Petkovic, Lucia M.

Methods for recovering a solvent from a fluid volume and methods of removing at least one compound from a nonpolar solvent

Patent · 10 June 2014

OSTI ID:1245978

Ginosar, Daniel M.; Wendt, Daniel S.; Petkovic, Lucia M.

A method of removing a nonpolar solvent from a fluid volume that includes at least one nonpolar compound, such as a fat, an oil or a triglyceride, is provided. The method comprises contacting a fluid volume with an expanding gas to expand the nonpolar solvent and form a gas-expanded solvent. The gas-expanded solvent may have a substantially reduced density in comparison to the at least one nonpolar compound and/or a substantially reduced capacity to solubilize the nonpolar compound, causing the nonpolar compounds to separate from the gas-expanded nonpolar solvent into a separate liquid phase. The liquid phase including the at least one nonpolar compound may be separated from the gas-expanded solvent using conventional techniques. After separation of the liquid phase, at least one of the temperature and pressure may be reduced to separate the nonpolar solvent from the expanding gas such that the nonpolar solvent may be recovered and reused.

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Research Organization:: Idaho National Laboratory (INL), Idaho Falls, ID (United States)

Sponsoring Organization:: USDOE

DOE Contract Number:: AC07-05ID14517

Assignee:: Battelle Energy Alliance, LLC (Idaho Falls, ID)

Patent Number(s):: 8,747,673

Application Number:: 13/177,962

OSTI ID:: 1245978

Country of Publication:: United States

Language:: English

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