Abstract: A method of forming a molecular separation device is provided. The method comprises growing or depositing a silica MFI zeolite coating on a ceramic support. The method further comprises growing a ZIF-8 coating on the silica MFI zeolite coating. Growing the ZIF-8 coating on the silica MFI zeolite comprises applying a first reactant fluid including a metal salt and a second reactant fluid including an imidazole reactant to the silica MFI zeolite coating. Growing the ZIF-8 coating on the silica MFI zeolite further comprises reacting the first and second reactant fluid with the silica MFI zeolite coating to produce the ZIF-8 coating. In certain implementations, at least a portion of the ZIF-8 coating is interspersed with a portion of the silica MFI coating. A molecular separation device including the ZIF-8 coating and the silica MFI zeolite is also disclosed.

Abstract: A high-flux silicon carbide ceramic filter membrane and a preparation method thereof are provided. In the preparation method, a separation layer is directly coated at a time on the basis of a support, that is, after the support is sintered, the separation layer is directly coated and then sintered for carbon removal. In the present disclosure, a sintering process and a coating formula are optimized to prevent fine silicon carbide particles from entering micropores of a support due to capillary filtration and film formation during coating, such that a separation layer with an average pore size of 0.2 ?m or less can be directly coated on a silicon carbide support with an average pore size of 10 ?m or more, and fine silicon carbide particles can be effectively prevented from entering micropores of the support during the coating.

Abstract: The present disclosure relates to systems and methods for electrically conductive membrane separation from a mixture solution via membrane nanofiltration, electro-filtration, or electro-extraction by: generating an electric field at the membrane filter, holding the membrane filter at a constant electric potential, or driving a constant current through the membrane filter; feeding a mixture solution through the membrane nanofiltration system; and separating a component from the mixture solution into a permeate solution.

Abstract: Disclosed is a method for removing hydrogen sulfide from natural gas. The method includes passing a natural gas feed including methane and hydrogen sulfide (H2S) through a membrane at normal operating conditions. The membrane is an asymmetric hollow fiber membrane or an asymmetric film composite membrane including a porous layer and a nonporous skin layer. The asymmetric hollow fiber membrane or the nonporous skin layer of the asymmetric film composite membrane plasticizes during the method by exposure to condensable gases with high critical temperature under the operating conditions. The membrane preferentially removes H2S over methane from the natural gas feed at a H2S/methane selectivity of from 7 to 40 when measured at 35° C. and 45 bar.

Abstract: Devices and methods related to a graphene oxide-based membrane are provided. A method comprises immersing graphene oxide-based layers in a water-based solution, stirring the water-based solution in a swirling motion until the graphene oxide-based layers each physically curve, adding a crosslinker to the water-based solution to cause the formation of saccate graphene oxide-based cells that are connected to each other via channels, and stacking the saccate graphene oxide-based cells on a substrate to form a graphene oxide-based membrane.

Abstract: The present disclosure relates to biocide compositions, formulations and methods for using formulations. In particular the present disclosure relates to biocide compositions and their use in treating reverse osmosis membranes.

Abstract: Disclosed is a method for reducing the increase in temperature at the surface of the earth and the increase in the content of carbon dioxide in the atmosphere due to the fossil fuel and non-fossil fuel combustion operations, remarkable in that it consists in reducing the increase in the temperature of the earth and the increase in the content of carbon dioxide in the atmosphere, which reductions in the temperature of the earth and of the content of carbon dioxide are achieved by reducing the drop in the oxygen content in the atmosphere, which reduction in the drop in the oxygen content includes: producing pure oxygen or producing hydrogen peroxide, and using for fuel combustion the oxygen or hydrogen peroxide to reduce the consumption of oxygen contained in the air during the combustion operations. Also disclosed is the device, the vehicle and the plant for carrying out the method.

Abstract: The present disclosure relates to a metal air filter including: a filter which is formed of a metallic material by electrodeposition and has a nano branch structure; an ionizer which conducts particles to be captured by the filter with negative charges; and a power supply which supplies a positive voltage for conducting the filter with positive charges and a negative voltage for the ionizer. The filter can be more simply manufactured at a lower cost than a conventional process.

Abstract: A filter element for filtering a fluid comprising a filter medium pack having an axial inlet side for receiving the unfiltered fluid and a circumferential side forming a radial boundary of the filter medium pack. The filter medium pack is configured for insertion into a housing of a filter system so as to enclose or partly enclose the circumferential side of the filter medium pack with an outer sidewall of the housing. The filter element comprises a bridge seal arrangement having a first collar-shaped portion comprising a first circumferential sealing surface sealingly coupled to the circumferential side of the filter medium pack or sealingly coupled to a border of the axial inlet side, and a second collar-shaped portion comprising a second circumferential sealing surface configured for encircling and sealingly cooperating with the outer sidewall of the housing.

Abstract: A zeolite membrane complex includes a porous support and a zeolite membrane formed on the support. Water molecules are adsorbed in the zeolite membrane. A decreasing rate of water content in the zeolite membrane from 250° C. to 500° C. is 0.1% or more.

Abstract: A vacuum deaerator degasses material to be processed by placing a rotating rotor with a screen in a vacuum vessel, introducing a liquid material to be processed into the rotor from the interior thereof and causing the liquid to pass through the screen to refine the same. The vacuum deaerator is characterized in that: the screen is a cylinder with a circular cross-section and is in the form of a porous plate in which a plurality of through holes are opened in the radial direction of the cylindrical screen; and the screen is provided such that the area of inflow openings is greater than the area of outflow openings, where the inflow openings are openings of a plurality of penetration portions provided on the inner wall face of the screen and the outflow openings are openings of the plurality of penetration portions provided on the outer wall dace of the screen. Thus, the processing capacity of the vacuum deaerator is improved without increasing the size of the device.

Abstract: Membranes, methods of making the membranes, and methods of using the membranes are described herein. The membrane can comprise a support layer; and a selective polymer layer disposed on the support layer. The selective polymer layer can comprise a selective polymer matrix (e.g., hydrophilic polymer, an amine-containing polymer, a low molecular weight amino compound, a CO2-philic ether, or a combination thereof), and graphene oxide dispersed within the selective polymer matrix. The membranes can be used to separate carbon dioxide for hydrogen. Also provided are methods of purifying syngas using the membranes described herein.

Abstract: A method for preparing a palladium-gold alloy layer on a substrate by electrodepositing said coating surface with an aqueous electroplating solution comprising of an aqueous solution of a soluble palladium compound and a soluble gold complex, wherein the ratio of gold to palladium to in the solution is from 5 to 40 w/w %. Also taught is a substrate such as a vanadium or vanadium alloy gas separation membrane coated with a palladium-gold alloy layer.

Abstract: The invention relates to a system for treating hydrogen and/or oxygen gas produced by water electrolysis and serving to supply a combustion process, characterised in that it comprises at least one heat exchanger, in which the one or more gases circulate so as to be cooled or heated, said heat exchanger being submerged in a reactive compound through which the one or more gasses pass in turn.

Abstract: A system for measuring at least one fluid characteristic at various stages within a sorbent system that has a sorbent cartridge that has at least one material layer and at least one fluid passageway in at least one location in the sorbent system to provide a diverted sample stream from the various stages. At least one fluid characteristic of the diverted sample stream is measured.

Abstract: The present disclosure relates to a system, generator and method for generating nanobubbles or nanodroplets and treating a multi-component mixture, and in particular for treating biogas and wastewater. The method comprises using nanobubbles of a gas component, and wastewater, to form hydrates in a treatment vessel; removing residual dirt from the treatment vessel and melting the hydrates to facilitate release of clean water.

Abstract: New carbon nanomaterials, preferably titanium carbide-derived carbon (CDC) nanoparticles, were embedded into a polyamide film to give CDC/polyamide mixed matrix membranes by the interfacial polymerization reaction of an aliphatic diamine, e.g., piperazine, and an activated aromatic dicarboxylate, e.g., isophthaloyl chloride, supported on a sulfone-containing polymer, e.g., polysulfone (PSF), layer, which is preferably previously prepared by dry/wet phase inversion. The inventive membranes can separate CO2 (or other gases) from mixtures of CO2 and further gases, esp. CH4, based upon the generally selective nanocomposite layer(s) of CDC/polyamide.

Abstract: The invention relates to devices for purifying hydraulic and dielectric fluids (oils and fuels) of dispersed and dissolved water. The unit for dehydrating and degassing hydraulic and dielectric fluids comprises a vacuum tank, an atomizer with a spray member, said atomizer being disposed in the vacuum tank, a hydraulic feed pump connected by a pipe to the atomizer, a hydraulic discharge pump connected by a pipe to the tank, and a vacuum pump connected by a pipe to the tank, wherein the atomizer is arranged vertically in the lower part of the vacuum tank with the spray member oriented upward and consists of: a T fitting with a lower inlet for oil and with a lateral air inlet; a mixing chamber disposed above the T fitting; and a spray member disposed above the mixing chamber.

Abstract: A filtration medium for a filter, having high dust collection efficiency, low pressure loss, a long service life and sufficient processing strength into a filter. A combined fiber nonwoven fabric includes first fibers having a mean fiber diameter of less than 200 nanometers, and second fibers having a mean fiber diameter in the range of 200 to 5000 nanometers, in which basis weight of the combined fiber nonwoven fabric is in the range of 2.1 to 15.0 g/m2.

Abstract: A filter element for exchangeable installation into a filter housing has an annular filter medium with an annular seal secured directly or indirectly onto the first axial end. The annular seal having a positioning and sealing section and concentric annular sealing rings between which a sealing groove is formed. A radially outer side of the radially outer annular ring having a key locking system formed by a plurality of circumferentially spaced apart radial projections, spaced apart by radial indentations, adapted to positively engage cooperative configured geometries or key locking features of a filter housing when in an installed state, thereby locking a rotational orientation and position of the filter element.