Air filter media comprising at least one active bead layer comprises an antistatic agent and polyethylenimine coated polymeric beads that can provide better formaldehyde abatement properties than incumbent activated carbon filters and can be prepared by using existing processing facilities for manufacture of incumbent activated carbon filters.

Proposed are an air purification filter (1) and an air purifier (200) including the same. The air purification filter includes a filtering layer (30) configured as a dielectric which collects minute particles, a pair of electrode layers (50, 70) laminated on opposite sides of the filtering layer (30), respectively, and configured to receive power so as to generate polarization through an electric field in the filtering layer (30), and a connection module (100, 100′). The connection module (100, 100′) is coupled to at least any one of the opposite ends of the pair of electrode layers (50, 70) such that the coupled portion of the connection module is insulated from an outside thereof and is electrically connected with an external power supply part.

Described herein are devices and components for same, e.g., filters cartridges, which are able to filter contaminants while allowing active ingredients, e.g., nicotine, to pass through.

A tetrafluoroethylene polymer is provided in an air filter medium having a pressure loss that can be reduced and made uniform at a plurality of positions. The tetrafluoroethylene polymer may also be provided in an air filter medium, a filter pack, or an air filter unit. The tetrafluoroethylene polymer has drawability and non-melt processability. The tetrafluoroethylene polymer has a ratio S.sub.2/S.sub.1 of 0.60 or more, where S.sub.2 represents an endotherm mJ/mg in a range of T.sub.0° C. or higher and 350° C. or lower, T.sub.0° C. is a temperature 2.5° C. lower than a temperature T.sub.p° C. (340≤T.sub.p≤345) at which a minimum point is given on a heat-of-fusion curve obtained by measuring an unbaked polymer for measurement having no history of heating to a temperature of 300° C. or higher using a differential scanning calorimeter at a temperature-increasing rate of 2° C./min, and S.sub.1 represents an endotherm mJ/mg in a range of 320° C. or higher and T.sub.0° C. or lower.

The present disclosure is directed to methods and systems of purifying solvents. The purified solvents can be used, e.g., as pre-wet liquids, solution developers, and cleaners in a multistep semiconductor manufacturing process.

The disclosure relates to a filtration media comprising a fibrous web impregnated with a resin composition comprising lignin. The fibrous web comprises the lignin in an amount of from 0.1 to 30 wt % by weight of the fibrous web, and the lignin has a density of less than 1.2 g/cm.sup.3 or a weight average molecular weight of less than 20,000 g/mol. The disclosure further relates to a method of manufacturing the filtration media.

Provided is a coating solution for forming a dust collecting layer, wherein the coating solution can be applied uniformly, and the formed dust collecting layer does not easily peel off from a filter element material, and allows to collect fine powder products having a small particle size. The coating solution is for forming a dust collecting layer in a dust collecting filter, and contains a fine powder, dopamine hydrochloride, and an adhesive.

The present disclosure is directed to methods and systems of purifying solvents. The purified solvents can be used, e.g., as pre-wet liquids, solution developers, and cleaners in a multistep semiconductor manufacturing process.

Provided is a blood purifier which includes a porous formed body and which has excellent blood compatibility, in which platelets are unlikely to adhere, has good cytokine adsorption capacity, and low pressure loss before and after treating blood, and can be safely used. Disclosed is a blood purifier having a body container, and a porous formed body accommodated in the body container. The porous formed body contains a hydrophobic polymer and a hydrophilic polymer, the low-melting-point water content per 1 g of dry weight of the porous formed body is 0.12-2.00 g, the rate of contact change of the porous formed body is 0-0.2%, and the adhering amount of platelets per 1 mL of blood is 0.400 billion/mL or less when brining the blood into contact with the porous formed body.

The present invention solves the problem of environmental pollution created by animal waste and converting animal waste to reusable water in the earth. The invention does this by a device that is capable of receiving animal waste and breaking down the waste into different components by the help of a decomposing catalyst such as a septic pack, filtering the resulting solution and finally producing a filtered liquid that enters the earth being cleansed by the process. The present invention comprises a filter device, a tank unit, a filter unit, a first opening positioned on a top surface of the tank unit; a second opening positioned on a bottom surface of the tank unit; wherein the tank unit is capable of receiving animal waste through the first opening; at least one hole at a bottom surface of the filter unit; wherein the tank unit is placed over the filter unit.