The present invention relates to a multilayer absorbent filtering item comprising: a first layer of a porous activated carbon support disposed on a nonwoven polyester-fibre felt; a second layer, where the surface of the first layer is bonded to a film of polymer and low-foam surfactants (mixture A); and a third layer, where the surface of the second layer is bonded to a film comprising an active ingredient and a low-foam surfactant in an acid aqueous medium (mixture B), the top face of said polymer film being bonded to the active ingredient, and the bottom face thereof adhering to the activated carbon, by means of polar and non-polar interactions. Also disclosed are a method for obtaining the multilayer absorbent filtering item and the use of the multilayer absorbent filtering item.

A method for producing a chemical reactor device based on a fluid flow comprises obtaining a substrate with a fluid channel defined by a channel wall, in which an ordered set of silicon pillar structures is positioned in the fluid channel and electrochemically anodising at least the silicon pillar structures to make the silicon pillar structures porous at least to a certain depth. After the anodising, the substrate and pillar structures are thermally treated, the treatment being carried out at a temperature, with a duration and in an atmosphere such that any silicon oxide layer formed has a thickness of less than 20 nm. The substrate and the pillar structures are further functionalized.

The present invention includes the composition and manufacturing of a non-prescription consumer product to treat odor and various types of inflammations, infections, and diseases. It embodies a disposable absorbent or nonabsorbent article containing unbound/freely associating adsorbent porous carbonaceous material for the entrapment and/or treatment of odor, pathogens, and adverse biological by-products. The product form includes but is not limited to tampons, panty liners, incontinence pads, diapers, sanitary towels, swabs, balls, casts, pouches, bandages and/or plugs, which contain adsorbent porous carbonaceous material that effectively reduces or eliminates adverse situations sourcing from pathogens and harmful biological by-products, including but not limited to fungi, bacteria, viruses, and parasites. The article is used to treat malodor, yeast infections, vaginitis, sexually transmitted diseases, field bullet wound holes, tooth infections, nail-bed and cuticle infections, among others by way of internal insertion and/or complete covering the body cavity, wound, and/or affected areas, creating a clear and direct path for contact with pathogens and adverse biological by-products.

Provided is a method of preparing a superabsorbent polymer. More particularly, provided is a method of preparing a superabsorbent polymer, the method capable of preparing the superabsorbent polymer maintaining excellent basic absorption performances such as centrifugal retention capacity, absorbency under load, etc. while also exhibiting an improved absorption rate.

An adsorbent bed, including at least one elementary composite structure that includes adsorbent particles in a polymer matrix, wherein the adsorbent bed has a bed packing, .sub.bed, defined as a volume occupied by the at least one elementary composite structure V.sub.ecs divided by a volume of the adsorbent bed V.sub.bed where .sub.bed is greater than 0.60.

A polymer composite includes a polymer substrate, activated carbon, and a carbonate salt. The activated carbon is infused with the carbonate salt. A hybrid composite includes a fibrous mat with activated carbon and potassium carbonate crystals adhered to the fibrous mat. Making a polymer composite includes combining activated carbon with a polymer to yield a mixture, and electrospinning the mixture to yield nanofibers, wherein the carbonate salt is adhered to or embedded in the nanofibers. Capturing carbon dioxide from a quantity of air includes contacting the polymer composite with the quantity of air in the presence of water vapor to yield potassium bicarbonate sorbed on the polymer composite.

One aspect of the present invention relates to an adsorption filter containing an activated carbon and a fibrous binder. The adsorption filter has a density of 0.400 g/ml or more, and a pore volume at a pore diameter of 1 to 20 m is 0.60 ml/g or less as measured by mercury intrusion porosimetry.

A liquid absorber includes a plurality of small parts each including a first layer containing fibers, a second layer containing fibers, and a third layer which contains a water absorbing resin and which is provided between the first layer and the second layer. When the water absorbing resin is measured in accordance with a plastic thermogravimetric measurement method defined by JIS K 7120: 1987 under measurement conditions in which a sample amount is 5 to 15 mg, a temperature increase rate is 10.0 C./min, and a measurement atmosphere is nitrogen, from a TG curve obtained thereby, the ratio of a weight decrease amount of the water absorbing resin at 400 C. with respect to an initial weight thereof is 0.050 to less than 0.500.

A liquid absorbent body according to the present disclosure includes a water absorbent resin and a pulp fiber, in which an evaporation rate of a pure water until elapse of 360 minutes after the pure water is absorbed is 0.0006 g/(cm.sup.2.Math.min) or more and 0.0020 g/(cm.sup.2.Math.min) or less, when the pure water of 20 mL is absorbed into the liquid absorbent body of 2.57 g, under an environment of 60 C. and 20% RH. It is preferable that the liquid absorbent body is configured to include an aggregate of small pieces in which a fiber base material containing the pulp fiber carries the water absorbent resin.

The present invention provides: a porous fiber that exhibits both improved adsorption capacity, and suppressed exposure and detachment of particulates; an adsorption column filled with said porous fiber; and a blood purification system in which an adsorption column is connected to a water removal column. The porous fiber according to the present invention has a three-dimensional pore structure formed by a solid fiber, and satisfies all of the following conditions. (1) The porous fiber has particulates having a diameter of not more than 200 m, and the percentage of area occupied by said particulates having a diameter of not more than 200 m in a horizontal cross section of the three-dimensional pore structure is at least 3.0%. (2) The porous fiber does not contain said particulates having a diameter of not more than 200 m in the region within 1.0 m in the depth direction from the outermost surface.