Precoat filtration media and methods of making and using
AssigneeKoslow Technologies Corporation
InventorEvan E. Koslow
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Abstract
The invention is directed to a precoat or body feed composition comprising a microbiological interception enhanced filter aid. Preferably, the microbiological interception enhanced filter aid comprises fibrillated lyocell nanofibers having coated on at least a portion of a surface thereof, a microbiological interception enhancing agent. The microbiological interception enhanced agent comprises a cationic material in combination with a biologically active metal. At least about 4 log reduction in bacterial interception is achieved with the microbiological interception enhanced filter aid alone or in combination with a bulk, untreated filter aid. A precoat composition including the microbiological interception enhanced filter aid can be used for one-step cold sterilization of beverages.
Claims20
A composition comprising:
- a filter aid having coated on at least a portion thereof, a cationic material having a counter ion associated therewith, wherein a biologically active metal is precipitated with the counter ion in direct proximity to the cationic material.
A composition comprising:
- an adsorbent;
- a filter aid admixed with said adsorbent, said filter aid having coated on at least a portion thereof, a cationic material having a counter ion associated therewith and a biologically active metal precipitated with the counter ion in direct proximity to the cationic material.
A method of filtering an influent:
- providing a support medium;
- coating the support medium with a filter aid to form a precoat, the filter aid having coated on at least a portion thereof, a cationic material having a counter ion associated therewith and a biologically active metal precipitated with the counter ion in direct proximity to the cationic material;
- passing the influent through the precoat;
- retaining contaminants from the influent on the precoat;
- and
- obtaining a clarified effluent.
Dependencies are inferred from the claim text.