초록 ▼

A chemically charged-modified filter for removing charged, micron to sub-micron sized particles from an aqueous liquid, the filter being composed of a filter sheet having a plurality of individual exposed surfaces, at least a portion of which having a surface energy of less than about 45 dynes per c

A chemically charged-modified filter for removing charged, micron to sub-micron sized particles from an aqueous liquid, the filter being composed of a filter sheet having a plurality of individual exposed surfaces, at least a portion of which having a surface energy of less than about 45 dynes per centimeter; amphiphilic macromolecules adsorbed onto at least some individual exposed surfaces having a surface energy of less than about 45 dynes per centimeter; and chemical charge modifiers incorporated onto at least a portion of the amphiphilic macromolecules; so that when said charge-modified substrate is in contact with the aqueous liquid containing the charged, micron to sub-micron sized particles, said particles are adsorbed onto the chemically charge-modified filter. Also disclosed is a method of removing charged, micron to sub-micron sized particles from an aqueous liquid in which an aqueous liquid containing charged, micron to sub-micron sized particles is passed through a chemically charge-modified filter.

대표청구항 ▼

[ What is claimed is:] [1.] A chemically charged-modified filter for removing charged, micron to sub-micron sized particles from an aqueous liquid, said chemically charge-modified filter comprising:a filter sheet having a plurality of individual exposed surfaces, at least a portion of which having a

[ What is claimed is:] [1.] A chemically charged-modified filter for removing charged, micron to sub-micron sized particles from an aqueous liquid, said chemically charge-modified filter comprising:a filter sheet having a plurality of individual exposed surfaces, at least a portion of which having a surface energy of less than about 45 dynes per centimeter;amphiphilic macromolecules adsorbed onto at least some individual exposed surfaces having a surface energy of less than about 45 dynes per centimeter; andchemical charge modifiers incorporated onto at least a portion of the amphiphilic macromolecules,so that when said chemically charge-modified filter is in contact with the aqueous liquid containing the charged, micron to sub-micron sized particles, said particles are adsorbed onto the chemically charge-modified filter. [20.] A method of removing charged, micron to sub-micron sized particles from an aqueous liquid, said method comprising passing an aqueous liquid containing charged, micron to sub-micron sized particles through a chemically charge-modified filter comprising:a filter sheet having a plurality of individual exposed surfaces, at least a portion of which having a surface energy of less than about 45 dynes per centimeter;amphiphilic macromolecules adsorbed onto at least some individual exposed surfaces having a surface energy of less than about 45 dynes per centimeter; and chemical charge modifiers incorporated onto at least a portion of the amphiphilic macromolecules;so that when the aqueous liquid containing charged, micron to sub-micron sized particles is passed through the chemically charge-modified filter, the charged, micron to sub-micron sized particles are adsorbed onto the chemically charge-modified filter.