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.

Embodiments of the disclosure provide a method and system for sulfur recovery. A Claus tail gas stream is fed to a hydrogenation reactor to produce a hydrogenated gas stream. The hydrogenated gas stream is fed to a quench tower to produce a quenched gas stream. The quenched gas stream is fed to a first stage adsorption vessel of first stage adsorption unit to produce a first outlet gas stream. The first outlet gas stream is fed to a second stage adsorption vessel of a second stage adsorption unit to produce a second byproduct gas stream. The first stage adsorption vessel is regenerated to produce a first byproduct gas stream. The second stage adsorption vessel is regenerated to produce a second outlet gas stream including hydrogen sulfide. Optionally, a portion of the second byproduct gas stream or nitrogen can be fed to the first stage adsorption vessel or the second stage adsorption vessel for regeneration. Optionally, a sales gas can be fed to the second stage adsorption vessel for regeneration. Optionally, vacuum can be applied to the first stage adsorption vessel or the second stage adsorption vessel for regeneration.

A system for obtaining water and carbon dioxide from an incoming first gas stream. The system comprises a first inlet for said incoming first gas stream, a first sorbent station comprising a first sorbent material for removing water vapour from said first gas stream, a second sorbent station comprising a second sorbent material for removing carbon dioxide from said first gas stream; and a first exhaust for said first gas stream. The system is configured to flow said first gas stream through the first inlet, the first sorbent station, the second sorbent station and the first exhaust. The system may be used in an environmentally controlled facility for growing plant material or in a building space conditioning. The present invention may therefore enable plant cultivation and/or building space conditioning whilst removing carbon dioxide from the atmosphere and therefore may help to combat climate change and benefit the environment, if implemented on a sufficient scale.

An analysis method and apparatus are disclosed for analysing an absorption filtering medium that filters volatile organic substances in a process gas in a plant for dehumidifying polymer granules, with a fan that generates a flow of gas through the S filtering medium, an analyzer of the total concentration of the organic carbon, a sensor to detect the pressure downstream of the filtering medium, in which the saturation state and/or the absorbent capacity and/or the deterioration over time of the filtering medium is determined by a comparison of the measured concentrations of total organic carbon in the flow of gas upstream and downstream of the filtering medium.

A membrane for water collection may include a sheet having a top surface and a bottom surface, and a plurality of conical structures disposed on the top surface of the sheet, the conical structures comprising a hydrogel material. Each conical structure of the plurality of conical structures may have a height of 1 mm to 50 mm, wherein height is measured from the top surface of the sheet to an apex of a conical structure. Each conical structure of the plurality of conical structures may have an apex angle of 10 to 60 degrees.

A water harvesting unit may include a chamber and a vessel. The chamber may include a first plenum space and a second plenum space located on either side of a partition member. The vessel may be supported for rotation within the chamber. The vessel may include a base and a plurality of sidewalls. The plurality of sidewalls may extend from the base to a vessel opening. The base may be substantially fluid impermeable and at least a portion of the plurality of sidewalls may be fluid permeable. The base and a majority of the plurality of sidewalls of the vessel may be disposed in the first plenum space. The vessel opening may open to the second plenum space via an opening in the partition member.

There is provided an exhaust system for the treatment of a humid exhaust gas comprising ammonia in an amount of up to 250 ppm, the system comprising: a dehumidifier system comprising a humid air inlet for providing a flow of humid exhaust gas; an exhaust gas inlet for providing a flow of dehumidified exhaust gas; an ammonia storage material arranged to receive the dehumidified exhaust gas from the exhaust gas inlet; an ammonia oxidation catalyst arranged downstream of a selected portion of the ammonia storage material; and a heating device for heating gas before it passes through the selected portion of the ammonia storage material to release ammonia stored therein for treatment on the ammonia oxidation catalyst; wherein the system is configured so that the selected portion of the ammonia storage material changes over time; and wherein the flow of dehumidified exhaust gas provided by the exhaust gas inlet is received from the dehumidifier system.

A mobile gas processing plant includes an inlet and an outlet, first and second Joule-Thompson (JT) valve units, an inlet scrubber, a dehydration unit including a contact tower, inlet and outlet filter separators, a vertical separator, and a dual pass line heater including first and second heating coils. The mobile gas processing plant is a mobile unit that is permanently mounted on at least one transport. The dehydration unit includes a contact tower that is permanently mounted on the at least one transport such that the contact tower is rotated up to be in an upright position relative to a base frame of the transport in an operational mode, and the contact tower is rotated down to be in a prostrated position relative to the base frame in a transportation mode. Each of the first and second JT valve units includes a first JT valve and a second JT valve. In the operational mode, and for each of the first and second JT valve units, a hydrocarbon gas stream flows through one of the first and second JT valves operating as a primary valve, and does not flow through the other of the first and second JT valves operating as a backup valve.

Provided herein are water harvesting systems, as well as methods of making and using such systems, for capturing water from surrounding air using a design that reduces overall energy costs of the systems and improve water harvesting cycle efficiency. The systems and methods use sorbent materials, such as metal-organic frameworks, to adsorb water from the air. The systems and methods desorb this water in the form of water vapor, and the water vapor is condensed into liquid water and collected. The liquid water is suitable for use as drinking water.

Embodiments of the present disclosure describe a metal-organic framework (MOF) composition comprising a plurality of metal clusters, wherein the metal is chromium; and one or more tetratopic ligands; wherein the metal clusters and ligands associate to form a MOF with soc topology. A method of making a MOF comprising contacting a template MOF of formula Fe-soc-MOF and a reactant including chromium in a presence of dimethylformamide sufficient to replace Fe with Cr and form an exchanged MOF of formula Cr-soc-MOF. A method of sorbing water vapor comprising exposing a Cr-soc-MOF to an environment; and sorbing water vapor using the Cr-soc-MOF.