Compressed adsorbent filter cake

Details Compressed adsorbent filter cake Compressed adsorbent filter cake

1995-05-24

1997-03-25

Spear, Frank

Liquid purification or separation

Filter

Material

210505, B01D 3906

Patent

active

056140967

ABSTRACT:
A compressed adsorbent filter cake for removing caffeine from liquids. The filter cake is composed of a compressed matrix of fibrous material; and adsorbent particulate material integrated within the compressed matrix of fibrous material, so that passage of a liquid having a caffeine concentration ranging from about 20 to about 100 mg per 100 mL of liquid through the matrix for a contact time of less than about 2 minutes results in at least a 40 percent reduction in the caffeine concentration of the liquid. The compressed matrix of fibrous material may a compressed wet-laid fibrous mat. The adsorbent material may be selected from clay minerals and zeolites. Generally speaking, the filter can be adapted to provide at least a 40 percent reduction in the caffeine concentration for about 1 cup to about 40 cups of a liquid.

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