Abstract: A substantially dry filtering media for rejuvenating glyceride oils is formed by admixing a calcined metallic oxide and an expanded silicate in a tumbler having grounded, electrically conducting walls for a period of time to electrostatically produce an agglomerate. Specific examples of metallic oxides are calcined magnesium oxide, calcined aluminum oxide, calcined potassium oxide, calcined calcium oxide, calcined zinc oxide and calcined ferric oxide. Examples of the silicate are expanded perlite and expanded pumice. The agglomerate so formed is of sufficient size to facilitate filtering of the oil, and subsequent removal of the media from the rejuvenated oil.

Abstract: The disclosed process provides for the treatment of edible cooking oils with a closed packet containing hydrated filtering material to absorb unwanted constituents.