Systems for selective removal of contaminants from a composition and methods of regenerating the same
First Claim
1. A method for removing organic acids from a crude product mixture comprising:
- contacting the crude product mixture with a metal oxide substrate, wherein free organic acids in the crude product mixture bind to the metal oxide substrate, thereby removing free organic acids and forming a refined product mixture;
separating the refined product mixture from the metal oxide substrate;
removing the organic acids bound to the metal oxide substrate by contacting the metal oxide substrate with fatty acid alkyl ester composition at a temperature of greater than about 100 degrees Celsius.
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Abstract
The present invention relates to devices and methods for selectively removing contaminants from a crude product mixture. In an embodiment the invention includes a method for removing organic acids from a crude product mixture including contacting the crude product mixture with a metal oxide substrate, wherein free organic acids in the crude product mixture bind to the metal oxide substrate, thereby removing free organic acids and forming a refined product mixture; separating the refined product mixture from the metal oxide substrate; and removing the organic acids bound to the metal oxide substrate by contacting the metal oxide substrate with an alkyl ester composition at a temperature of greater than about 100 degrees Celsius. Other embodiments are also described herein.
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Citations
17 Claims
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1. A method for removing organic acids from a crude product mixture comprising:
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contacting the crude product mixture with a metal oxide substrate, wherein free organic acids in the crude product mixture bind to the metal oxide substrate, thereby removing free organic acids and forming a refined product mixture; separating the refined product mixture from the metal oxide substrate; removing the organic acids bound to the metal oxide substrate by contacting the metal oxide substrate with fatty acid alkyl ester composition at a temperature of greater than about 100 degrees Celsius. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 17)
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15. A method of regenerating a free fatty acid removal apparatus comprising
contacting saturated metal oxides disposed within the free fatty acid removal apparatus with a fatty acid alkyl ester composition at a temperature of greater than about 100 degrees Celsius, thereby releasing bound fatty acids from saturated metal oxides into the fatty acid alkyl ester composition.
Specification