A method of manufacturing a carbon nanotubes-based adsorption/filtration nanomaterial for high-volume cleaning of fluids, which are annealed without access to ambient air at a temperature of 300 to 1150 C. for 0.1 to 12 hours, is described, said carbon nanotubes being subsequently immobilized on a support. substrate based on fibrous natural or synthetic material. Preferably, an inert coarse-grained inorganic and/or organic material is mixed with the immobilized carbon tubes to form a composite adsorption/filtration nanomaterial as a homogeneous mixture.

A filtration element comprising a thread-based medium comprising one or more threads, wherein each thread comprises at least one filament of carbon nanotube (CNT), and wherein the filtration element is configured to filter a feed fluid based on a filtration operation wherein the feed fluid passes through the thread-based medium.

Virus and microbe-killing, self-sterilizing resistive heated air filters and methods of making and using same methods. The air filter is includes laser-induced graphene (LIG), a porous conductive graphene foam formed through photothermal conversion of a polyimide film (or another source or source of polymer or other LIG precursor material) by a laser source. The LIG in the air filter can capture particulates and bacteria. The bacteria cannot proliferate even when submerged in culture medium. Through a periodic Joule-heating mechanism, the filter easily reaches greater than 300? C. This destroys any microorganisms including bacteria, along with molecules that can cause adverse biological reactions and diseases such as viruses, pyrogens, allergens, exotoxins, endotoxins, teichoic acids, mycotoxins, nucleic acids, and prions.

A carbon fiber bundle is characterized in that a ratio (n/N) of a number n of pairs wherein a flaw of 50 nm in size or more is present on at least one of the fracture surfaces forming the pair to a total number N of pairs of fiber fracture surfaces selected at random after performing a single fiber tensile test for a gauge length of 10 mm is 35% or less, and in that a single-fiber diameter d is 4.3 m or more.

Nanofiber sheet assemblies include at least one nanofiber sheet and at least one nanofiber grid or web that is used to improve the physical durability of the nanofiber sheet within the assembly. Nanofiber sheet assemblies retain the permeability of the nanofiber sheets to gaseous phase substances. This enables technological applications of nanofiber sheet assemblies to include filters for micron or nano-scale particles that are disposed in gas phase substances.

A cartridge filter includes a feedwater inlet, a first outlet and a second outlet, a tube arranged at the center of the cartridge filter, an interior volume of the tube being in fluid communication with the first outlet, and a spiral wound filter assembly extending radially outward from the central tube and including a prefilter, a reverse osmosis filter, and a postfilter. The prefilter is located radially outward from the reverse osmosis filter and the postfilter.

Porous and/or curved nanofiber bearing substrate materials are provided having enhanced surface area for a variety of applications including as electrical substrates, semipermeable membranes and barriers, structural lattices for tissue culturing and for composite materials, production of long unbranched nanofibers, and the like. A method of producing nanofibers is disclosed including providing a plurality of microparticles or nanoparticles such as carbon black particles having a catalyst material deposited thereon, and synthesizing a plurality of nanofibers from the catalyst material on the microparticles or nanoparticles. Compositions including carbon black particles having nanowires deposited thereon are further disclosed.

A fluid purification device includes a screen plate, a first filtration layer, a second filtration layer, a third filtration layer, a main body, and a dispensing plate. The screen plate has a plurality of inflow holes for filtering particles in fluid passing therethrough. Around a periphery of the screen plate, several convex sections are arranged and spaced apart from one another. The main body is hollow and has an open top and an open bottom opposite to the open top. Around an inner wall of the open top, several concave sections are arranged and spaced apart from one another. The concave section is shaped in conformity with the convex section, so that the screen plate can be secured to the open top of the main body.

Described are silicon carbide filters for use with liquid metals such as liquid tin, as well as methods of using such a filter to remove particles from the liquid metal, and systems and processes that use the filtered liquid metal.

The present application relates to a multifunctional filter medium and a method of manufacturing the same. The multifunctional filter medium of the present application is capable of significantly reducing fine dust, harmful microorganisms, and toxic gases and reducing a pressure decrease during filtration due to exclusion of high-density nanofiber, thereby minimizing energy required for filtration and exhibiting sufficient filtration performance as a single filter medium.