Abstract: A membrane contactor for degassing a gas-entrained liquid and to discharge gas-depleted liquid includes: a shell has two ends; a cap closes one shell end; a membrane extends between the shell ends and is enclosed within the shell; a first center tube discharges the gas-entrained liquid into the membrane; a second center tube discharges the gas-depleted liquid from the contactor; and one tube surrounds the other tube. The membrane may be a flat sheet membrane or a hollow fiber membrane. The cap has an in let in fluid communication with the first center tube and an outlet in fluid communication with the second center tube. A baffle may be located within the membrane between the shell ends.

Abstract: The technology disclosed herein relates to a vent assembly having a vent housing that defines a first airflow pathway, a second airflow pathway, and a third airflow pathway. The first airflow pathway is configured for fluid communication with an interior of an enclosure. The second airflow pathway is configured for fluid communication with the external environment, and the third airflow pathway extends between the first airflow pathway and the second airflow pathway. A membrane is coupled to the vent housing such that the second airflow pathway and the third airflow pathway are in communication through the membrane. Coalescing filter media is disposed within the vent housing such that the third airflow pathway and the first airflow pathway are in communication through the coalescing filter media. The vent assembly defines a spacing region between the coalescing media and the membrane.

Abstract: A filter that includes a plurality of fibers arranged to form a first principal surface and a second principal surface opposite the first principal surface, and a plurality of first piezoelectric fibers that generate negative charges by stretching are arranged at least on a side of the first principal surface.

Abstract: 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.

Abstract: Filtration systems having a normal filtration mode and an enhanced filtration mode are described. In some arrangements, the filtration system is an air filtration system having a primary air filter element, a pre-cleaner, and a pre-cleaner bypass valve. Based on feedback from an intake air quality sensor the bypass valve is either opened or closed to selectively route intake air through the pre-cleaner during sensed dirty air operating conditions (e.g., heavy dust or moisture concentrations). In other arrangements, the filtration system is a liquid filtration system (e.g., a fuel or oil a secondary filter. The filtration system selectively routes the liquid being filtered through the main filter, the secondary filter, or a combination thereof depending on a detected event or sensed characteristic of the liquid.

Abstract: In one example, a liquid-gas separator includes a composite membrane to pass a gas but not a liquid at a first pressure difference across the membrane and to block the gas passing back through the membrane at a second pressure difference smaller than the first pressure difference.

Abstract: A method for the manufacture of a carbon nanomembrane is disclosed. The method comprises preparing a metallised polymer substrate and applying on the metallised polymer substrate a monolayer prepared from an aromatic molecule. The aromatic molecule is cross-linked to form a carbon nanomembrane. The carbon nanomembrane is coated by a protective layer and subsequently the carbon nanomembrane and the protective layer are released from the metallised polymer substrate. Finally, the carbon nanomembrane and the protective layer are optionally placed on a support. The protective layer can be optionally removed. The carbon nanomembrane can be used for filtration.

Abstract: The present invention includes apparatuses and methods to separate a gas from a gaseous mixture using supercapacitive swing adsorption.

Abstract: The technology disclosed herein relates to a tank vent having a housing and a pleated, vapor-permeable microporous membrane. The housing defines a first vapor passageway configured for direct communication with a tank interior and a second vapor passageway configured for direct communication with the atmosphere. The housing also defines a tank mounting surface is mountable to a tank housing and a media mounting surface. The microporous membrane is sealed to the media mounting surface and defines a tubular structure such that the first vapor passageway and the second vapor passageway are in communication through the microporous membrane. Other embodiments including methods are also disclosed.

Abstract: A method produces a metal-organic framework on a surface of another metal-organic framework. One embodiment comprises contacting the first metal-organic framework with a ligand and solvent solution; wherein the first metal-organic framework comprises a first ligand and a first metal; wherein the ligand and solvent solution comprises a second ligand that is different from the first ligand in the first metal-organic framework; and allowing the second ligand from the ligand and solvent solution to exchange with the first ligand present in the first metal-organic framework for a period of time suitable to produce the second metal-organic framework on the surface of the first metal-organic framework.

Abstract: A gas separation membrane, characterized by having a porous support and a polyamine layer formed on the porous support, the number-average molecular weight of the polyamine constituting a part of the polyamine being 100,000-500,000.

Abstract: The present invention provides an air-permeable filter capable of maintaining excellent air permeation performance without being clogged even in an environment involving exposure to an oil, oil mist, or ink. The present invention relates to an air-permeable filter including a porous membrane having a surface coated with an oil-repellent agent, the filter being characterized in that a sliding angle of 20 ?l of hexadecane or pentadecane on the surface of the filter is 60° or less.

Abstract: A fluid system includes an inlet conduit disposed in a fluid flow path between a fluid source and a fluid destination. The fluid conduit includes a fluid mixing portion. The fluid system includes a fluid separation module disposed in the flow path downstream of the constriction between the source and the destination. The fluid separation module includes a first fluid separator. The fluid system includes a second fluid separator disposed in the flow path upstream of the first fluid separator. The fluid system includes a feedback conduit that may provide fluid communication between an outlet of the fluid separation module and the fluid mixing portion.

Abstract: An enhanced filtration multilayer laminated fabric includes an air permeable, moisture-vapor-transmissive central layer such as polytetra-fluoroethylene (ePTFE) sandwiched between a first pair of nonwoven textile layers and a second pair of woven textile layers. The laminated fabric may also feature a fire resistant application. The top textile layer may also include a permanent, highly breathable and highly durable electro-static discharge feature added to the inside of the layer by laying down a carbon based printed pattern on the inside of the layer. The filtration fabric may be utilized to manufacture a wearable garment that is aesthetically pleasing and comfortable to wear in all weather conditions and which effectively filters airborne particulates from entering a user's respiratory system by blocking particulates having a size of 0.3 microns and larger from inhaled air for a user's respiratory system with a particle blocking efficiency of at least 90%.

Abstract: The invention relates to a composite for an acoustic component having at least one carrier layer and an electrospun membrane which is arranged on the at least one carrier layer, wherein the electrospun membrane is formed of superimposed fibers while a pore structure is being designed. The pore structure of the composite is designed such that the composite has a water column of at least 1 m and an air permeability of 5 L/m2*s. Furthermore, the invention relates to a method for producing a composite for an acoustic component, in which a carrier layer is provided and on the carrier layer a membrane is designed according to the electrospinning method, wherein the membrane is produced of superimposed fibers with a defined pore structure.

Abstract: Embodiments include a method of making a metal organic framework membrane comprising contacting a substrate with a solution including a metal ion and contacting the substrate with a solution including an organic ligand, sufficient to form one or more layers of a metal organic framework on a substrate. Embodiments further include a defect-free metal organic framework membrane comprising MSiF6(pyz)2, wherein M is a metal, wherein the thickness of the membrane is less than 1,000 ?m, and wherein the metal organic framework has a growth orientation along the [110] plane relative to a substrate.

Abstract: An apparatus and method are provided for an air filter configured to be mounted onto an air inlet of an internal combustion engine. The air filter comprises a first end cap configured to couple with a base which is configured to support a conventional air filter and provide an interface between the conventional air filter and the air inlet. A filter medium which is relatively thicker than the conventional air filter is configured to remove particulate matter and other contaminates from an incoming airstream. A second end cap is configured to couple with a cover which is configured to fasten the conventional air filter and the base onto the air inlet, such that the incoming airstream is directed through the filter medium. The air filter is configured to be installed in place of the conventional air filter without necessitating alteration of the base and cover.

Abstract: The invention relates to a method and an arrangement for the continuous production of compressed oxygen from air using mixed conducting ceramic membranes. The aim of the invention is to provide a way of isolating pure oxygen from the air and compressing said oxygen to pressures above the ambient pressure, without using mechanical or electromechanical compression of air or oxygen. To achieve this aim, according to the invention water in various aggregate states is conducted in a circuit and the configuration of the equipment is designed such that the desired high oxygen pressure is produced in a separate area from the membrane module and the oxygen produced is prevented from mixing with the freshly produced water vapour.

Abstract: A filter medium for an air filter includes a pre-collection member, a first porous film, and a second porous film arranged in order from the side that is upstream of the air current. Each of the first porous film and the second porous film has a pressure loss of 30 Pa or more and 90 Pa or less when air is passed through each porous film at a flow rate of 5.3 cm/s, and has a collection efficiency of 95% or more and 99.9% or less for NaCl particles having a particle diameter of 0.3 ?m when air containing the NaCl particles is passed through each of the porous films at a flow rate of 5.3 cm/s. The pre-collection member has a pressure loss of 5 Pa or more and less than 55 Pa when air is passed through the pre-collection member at a flow rate of 5.3 cm/s, has a collection efficiency of 15% or more and less than 85% for NaCl particles having a particle diameter of 0.3 ?m when air containing the NaCl particles is passed through the pre-collection member at a flow rate of 5.3 cm/s, and has a thickness of more than 0.

Abstract: A spiral-wound acid gas separation membrane element (1) includes a wound body including a separation membrane (2), a feed-side channel component (3), and a permeate-side channel component (4) wound in a laminated state around a core tube (5). The core tube (5) has a group of holes for allowing communication between a permeate-side spatial portion defined by the permeate-side channel component (4) and a spatial portion inside the core tube (5), the group of holes being present on an end side of the core tube (5).