Patent ID: 7484626
Filing Date: 2009-02-03
Classification: B01D

Abstract:
1. A water filter comprising: a. a porous support characterized by a mean porosity in the range of 20 to 50% and a mean pore size of 2 to 5 μm; and b. a membrane comprising a carbon filter medium disposed on and in contact with a surface of said support, said carbon filter medium characterized by a mean particle size in the range of 7 to 21 μm, said membrane characterized by a mean pore size in the range of 1 to 3 μm and a mean porosity in the range of 10 to 30%; wherein said membrane is a first membrane, wherein said carbon filter medium is a first carbon filter medium, and further comprising a second membrane comprising a second carbon filter medium disposed on and in contact with a surface of said first membrane, said second carbon filter medium characterized by a mean particle size in the range of 3.5 to 7 μm, said second membrane characterized by a mean pore size in the range of 0.5 to 1 μm and a mean porosity in the range of 5 to 20%.