A gas-permeable element configured to close a receptacle base containing an active material, wherein the receptacle includes the receptacle base and the gas-permeable element. The gas-permeable element includes a body, having a base wall, including at least one opening. For each opening of the base wall, the body includes a tubular projection projecting from a periphery of the opening. The tubular projection includes a first end, connected to the periphery of the opening, a second end, defining a distal edge surface transverse to a longitudinal axis of the tubular projection. A porous membrane portion extends across the second end of the tubular projection while attached to the distal edge surface at its periphery.

A system for removing methane oxidation catalyst (MOC) poisons from an exhaust gas including a methane abatement unit that may receive the exhaust gas having methane (CH.sub.4)and the MOC poisons. The methane abatement unit includes a guard bed that may remove the MOC poisons from the exhaust gas and may generate an intermediate exhaust gas having the CH.sub.4 and devoid of the MOC poisons. The guard bed includes a MOC poisons capturing component having a first transition metal oxide, an aluminum oxide (Al.sub.2O.sub.3) support material, and a dolomite-derived support material. The methane abatement unit also includes a MOC bed fluidly coupled to and positioned downstream from the guard bed. The MOC bed includes a MOC and may remove CH.sub.4 from the intermediate exhaust gas to generate a treated exhaust gas having less than approximately 200 parts per million volume (ppmv) CH.sub.4.

A system may include a chamber with a main sub-chamber and a first porous membrane separating a first sub-chamber from the main sub-chamber. The system may include a fluid in the chamber and an input directing inflow into main sub-chamber proximate an entry end of the chamber. The system may include a first output permitting outflow from the first sub-chamber proximate an exit end of the chamber wherein a molecule entering at the entry end must traverse a length of the chamber to exit at the exit end.

The present disclosure relates to systems and methods of making ammonia using stable ammonia absorbents. The system and method for producing ammonia, comprises a reactor comprising a catalyst that converts at least a portion of nitrogen feed gas and at least a portion of hydrogen feed gas to ammonia (NH3) forming a reaction mixture comprising the ammonia, unreacted nitrogen, and unreacted hydrogen. An absorber configured to selectively absorb ammonia from the reaction mixture at a temperature of about 180 deg. C. to 330 deg. C. and a pressure of about 1-20 bar, the absorber comprising a solid absorbent. Preferably the solid absorbent is at least one metal halide and a solid support. The unabsorbed ammonium, the unreacted nitrogen, and unreacted hydrogen gas are recycled to the reactor.

The present invention provides a new method for fixing carbon dioxide. The method for fixing carbon dioxide of the present invention, includes: a contact step of bringing a mixed liquid containing sodium hydroxide and further containing at least one of a chloride of a Group 2 element or a chloride of a divalent metal element into contact with a gas containing carbon dioxide, wherein in the contact step, the mixed liquid and the gas are brought into contact with each other by feeding the gas into the mixed liquid, a concentration of the sodium hydroxide in the mixed liquid is 0.01 N or more and 0.2 N or less, and in the contact step, the feeding is performed by a motor-driven pump, and the motor is driven by utilizing power generated by photovoltaic power generation.

A system and method for providing inerting gas to a protected space is disclosed. The system includes an air separation module that includes an air inlet, a membrane with a permeability differential between oxygen and nitrogen, a nitrogen-enriched air outlet, and an oxygen-enriched air outlet. The system also includes an air flow path between an air source and the air separation module inlet, and an inerting gas flow path between the air separation module nitrogen-enriched air outlet and the protected space.

A process for capture of carbon dioxide comprising the steps of contacting the carbon dioxide with at least one metal carbonate in an aqueous organic solvent at a predetermined temperature.

The present disclosure relates to an apparatus, system and method for selectively capturing a carbon-containing gas from an input gas mixture.

Two inline tower gas wet scrubbers having a moving bed of solids for scrubbing exhaust gas

Two inline tower gas wet scrubbers wherein each scrubber has a moving bed of solids 0010 that is conveyed from the top to the bottom of the towers via a plurality of perforated moving floors 003 arranged one above the other. Wherein the moving floors are mounted on plenums 004 that extend from the internal walls of the towers. A liquid 008 is sprayed from the top of each tower, wherein the liquid washes the exhaust gas, capturing particle matter and absorbing acidic gases and heat. As the liquid falls under gravity, the liquid is filtered through the solids. Exhaust gas e.g. containing CO.sub.2 enters the first scrubber 001 above the bottom plenum and travels upwards over the moving bed towards the outlet at the top of the scrubber, whilst being washed by the falling liquid. The warm carbonated solids and liquid that exit the first reactor are fed into the top of the second reactor 002, whilst the gas exiting the first reactor enters the second reactor via the plenums/ducts that support the moving floors thereby distributing the gas throughout the reactor.

The present disclosure relates to an apparatus, system and method for selectively capturing a carbon-containing gas from an input gas mixture.