Process for removing metal contaminants from glyceride oil and a glyceride oil refining process incorporating the same

A process for removing metal from a metal-containing glyceride oil comprising contacting the glyceride oil with a basic ionic liquid comprising an organic quaternary ammonium cation, and separating the treated glyceride oil from an ionic compound comprising the organic quaternary ammonium cation. Th...

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Bibliographische Detailangaben
Hauptverfasser:	Christopher Klatt Hamer, Martin Philip Atkins, Peter Goodrich, Eoghain O'Hara
Format:	Patent
Sprache:	eng
Schlagworte:	ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES CANDLES CHEMISTRY DETERGENTS EDIBLE OILS OR FATS, e.g. MARGARINES, SHORTENINGS, COOKINGOILS ESSENTIAL OILS FATS, OILS OR FATTY ACIDS BY CHEMICAL MODIFICATION OF FATS,OILS, OR FATTY ACIDS OBTAINED THEREFROM FATTY ACIDS FROM FATS, OILS OR WAXES FATTY ACIDS THEREFROM FOODS OR FOODSTUFFS HUMAN NECESSITIES METALLURGY PERFUMES PRODUCING (PRESSING, EXTRACTION), REFINING AND PRESERVINGFATS, FATTY SUBSTANCES (e.g. LANOLIN), FATTY OILS AND WAXES,INCLUDING EXTRACTION FROM WASTE MATERIALS THEIR TREATMENT, NOT COVERED BY OTHER CLASSES
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Beschreibung
Zusammenfassung:	A process for removing metal from a metal-containing glyceride oil comprising contacting the glyceride oil with a basic ionic liquid comprising an organic quaternary ammonium cation, and separating the treated glyceride oil from an ionic compound comprising the organic quaternary ammonium cation. The basic anion of the basic ionic liquid is selected from hydroxide, alkoxide, alkylcarbonate, hydrogen carbonate, carbonate, serinate, prolinate, histidinate, threoninate, valinate, asparaginate, taurinate and lysinate. Preferably the glyceride oil does not comprise palm oil and the basic ionic liquid is selected from choline bicarbonate or choline hydroxide, and the process further comprises subjecting the glyceride oil to at least one refining step before and/or after contacting the glyceride oil with the basic ionic liquid. Also claimed is the use of the basic ionic liquid for reducing the total metal concentration of a metal-containing glyceride oil and a composition comprising glyceride oil and a basic ionic liquid wherein the total concentration of metal in the composition is 10-10,000 ppm.