Disclosed are a blood filter which exhibits excellent leukocyte elimination performance as well as significantly improved blood throughput per unit time and erythrocyte recovery rate and a method of manufacturing the same. The blood filter of the present invention includes a pre-treatment filter which is a laminate of first non-woven fabrics having a mean fiber diameter of 5 to 30 ?m and a mean pore size of 10 to 30 ?m, and a main filter which is a laminate of second non-woven fabrics having a mean fiber diameter of 1 to 5 ?m, a mean pore size of 5 to 10 ?m and a mean pore size distribution rate of 30% or more. A filling density of the pre-treatment filter and a filling density of the main filter, with respect to a target blood throughput of the blood filter, are 0.1 g/100 ml to 1 g/100 ml and 1 g/100 ml to 3 g/100 ml, respectively.

An air management system of a vehicle having a conditioned area includes at least one duct defining a flow path for delivering air to the conditioned area and a filter arranged within the at least one duct upstream from the conditioned area. The filter includes a filter media having at least one filter media layer including a plurality of fibers. A coating is applied to at least a portion of the plurality of fibers and the coating is operable to deactivate a microbe arranged in contact with the coating.

A specially functionalized composite filter material with a high specific surface area is used to adsorb PFAs from potable water. In a preferred embodiment, the base filter material is granular activated carbon (GAC), which is sequentially coated with a thin layer of polydopamine, a thin layer of partially oxidized iron, and a thin coating of octadecylamine. After PFAs are adsorbed onto the coated GAC particles, the PFAs are removed by a rinsing process, and remain in the rinse effluent. GAC particles are recovered and recoated as needed to restore their adsorptive capacity. The PFA-containing effluent is treated using photochemical processes to destroy the PFA molecules. The now PFA-free effluent can be disposed of as a non-hazardous material. The composite filter material works in systems ranging from small passive systems for personal use to large scale, high-flow-rate utility water treatment systems.

The invention relates to a composite material for use in a face mask. The composite material comprises at least one fabric layer comprising a metallic fiber material; and at least one polymer layer laminated with the at least one fabric layer to form a single composite layer; wherein the at least one polymer layer is of substantially the same shape and size as the at least one fabric layer, such that any air stream passing through the composite layer will be effectively filtered by both the at least one fabric layer and the at least one polymer layer.

The invention is contemplated for providing polyethylene-based fibers in which elution of metal from polyethylene is suppressed as much as possible. The invention relates to polyethylene-based fibers, composed of at least one kind of polyethylene resin, in which a total of content of metal elements such as Na, K, Ca, Fe, Cu, Mg, Mn, Li, Al, Cr, Ni and Zn contained inside the fibers is 40 ppm or less. Moreover, the invention relates to a nonwoven fabric using the polyethylene-based fibers.

A composition for preparing a rigidified fabric made of heat resistant fibers or threads of heat resistant fibers, preferably of woven threads made of heat resistant fibers, said composition comprising a mixture of a product A and a product B, the product A being obtained by polymerization of carbohydrate units, natural or synthetic, preferably a saccharide, and more preferably a sugar such as glucose, fructose, galactose, sucrose, maltose, lactose, etc.; and the product B consisting of at least one additive such as a binding agent. A method for preparing said composition, a method for preparing a rigidified fabric of heat resistant fibers, the method for the manufacture of filtering devices, filtering devices so obtained, their use for the filtering of metal, and installation and process involving said filtering devices.

This invention is directed towards high performance media for filtration and other applications using specially designed binder fibers, wherein the filter media uses higher strength binder fibers to provide the media with high efficiency, high permeability, and high dirt holding capacity while also providing higher strength and stability during process and use. The designed media can be used in air and liquid filtration and separation, and other applications where high permeability, small pore sizes, and high holding capacity are desired.

A filtration material is disclosed that may include a first layer comprising a first three-dimensional network of fibers including a first plurality of cells, including an extracellular matrix comprising -glucan and chitin. The filtration material may include a second layer fluidly downstream of the first layer comprising a second three-dimensional network of fibers including a second plurality of cells, including an extracellular matrix including -glucan and chitin and the second layer may be adhered to the first layer. The first layer and the second layer may be coated with a polymer mixture including a polymer configured to mitigate exposure of the first and second three-dimensional network of fibers to glucanases and chitanases and further resist thermal degradation below a predetermined temperature. The polymer mixture may further include an antioxidant at an amount sufficient to mitigate the polymer from thermally degrading below the predetermined temperature.

There is provided a nanofibrous filter comprising a substrate and self-assembled nanofibers deposited on the substrate. The self-assembled nanofibers comprise -conjugated molecules self-assembled by non-covalent interactions, wherein the -conjugated molecules are phthalocyanine derivative molecules or diketopyrrolopyrrole derivative molecules. There is also provided a method of preparing the nanofibrous filter.

A catalyzed fabric filter substrate and a method of preparing the substrate comprising the steps of a) providing a fabric filter substrate b) providing an aqueous impregnation liquid comprising an aqueous hydrosol of one or more catalyst metal precursor compounds dispersed on nanoparticles of an oxidic metal carrier, a surfactant and a dispersing agent selected from the group of primary amines; c) impregnating the fabric filter substrate with the impregnation liquid; and d) drying and thermal activating the impregnated fabric filter substrate at a temperature below 300? C. to convert the one or more metal compounds of the catalyst precursor to their catalytically active form.