The present invention is directed to the removal of mercury in a gas dehydration process using thermally table chemical additives. In the process a complexing agent is added to a recirculated glycol solvent as part of the glycol solution feed to the dehydration liquid contactor and recirculated continuously with the glycol solvent. The complexing agent selectively reacts with mercury in the wet natural gas to remove the mercury from the dry natural gas product.

A carbon capture system for carbon dioxide (CO.sub.2)-thermal swing adsorption (TSA) includes an engine configured to produce a hot exhaust; a plurality of capture vessels that are configured to be respectively cycled through a plurality of stages of a CO.sub.2-TSA process; an N.sub.2 heat exchanger configured to receive the hot exhaust; and an N.sub.2 turbocharger coupled to the N.sub.2 heat exchanger. The N.sub.2 turbocharger is configured to receive N.sub.2 gas from a first capture vessel, heat the N.sub.2 gas via the N.sub.2 heat exchanger through a thermal exchange with the hot exhaust to produce a heated N.sub.2 gas, and provide the heated N.sub.2 gas to a second capture vessel in order to dry capture media of the second capture vessel.

A carbon dioxide recovery method includes an adsorbing step of adsorbing carbon dioxide onto an adsorbent at a first location by using an air flow generated by a blower provided in a fluid device or an external air; a first transporting step of transporting the adsorbent which has adsorbed the carbon dioxide from the first location to a second location by a mobile object; and a second transporting step of transporting an adsorbent which has not adsorbed the carbon dioxide from the second location to the first location by a mobile object.

A gas recovery system configured to recover a recovery target gas from a gas mixture includes electrochemical cells and a gas passage between the electrochemical cells. The electrochemical cell has a working electrode including an adsorbent, and a counter electrode configured to exchange electrons with the working electrode. Electron donation occurs from the counter electrode to the working electrode when a voltage is applied between the working electrode and the counter electrode, such that the adsorbent adsorbs the recovery target gas along with the electron donation. At least one of the working electrode or the counter electrode includes an electrode film. The electrode film includes regions, each of which having a size smaller than a size of the electrochemical cell, and a reducing part that reduces warpage of the electrode film is located adjacent to the regions.

A sorbent bed cartridge includes an exoskeleton having an interior space configured to receive a sorbent bed, and a thickness control system to at least substantially maintain a preselected thickness of the bed. A system includes a chamber to hold one or a plurality of the cartridges, which are movable into and out of the chamber. A method of forming the cartridge includes securing the bed within the exoskeleton, and utilizing the thickness control system to maintain the preselected thickness of the bed. A cartridge includes an exoskeleton having first and second side plates and first and second end external plates, the exoskeleton configured to receive a plurality of beds in a predetermined array for carbon capture airflow, and enables movement of the cartridge and the plurality of beds contained therein into and out of a chamber sized to hold a singular or plurality of the cartridges.

The present disclosure is directed to metal ion-containing zeolitic compositions having MOR topology that are useful for scavenging CO.sub.2 from low-CO.sub.2-content feed streams, including air, and method of making and using the same.

Aspects of the present disclosure include a filtration system. The filtration system includes a mask and a hybrid filter for use with an activated carbon-based filter and attachable to the mask. The mask may include an interface around a periphery of the mask for sealing engagement with a skin surface of a user. The hybrid filter may include a chamber configured to receive the activated carbon-based, an electro-ionic filter, and a Faraday cage. The electro-ionic filter is in series with the material-based filtration element and includes a plurality of electrodes arranged in series with each other. The electrodes of the plurality of electrodes are evenly spaced apart from each other in an alternating positive-polarity negative-polarity sequence. The Faraday cage surrounds at least the electro-ionic filter.

A device for passive collection of atmospheric carbon dioxide is disclosed, including a vessel having an opening and a sorbent regeneration system. The device also includes a helical sorbent structure rotatably coupled to the vessel. The sorbent structure has a helical framework coupled to a sorbent material. The sorbent structure is movable between collection and release configurations. The collection configuration includes the sorbent structure extending upward from the vessel to expose the sorbent structure to an airflow and allow the sorbent material to capture atmospheric CO.sub.2. The sorbent structure is free to rotate on an axis. The sorbent material is constrained to a helix rotating about and propagating along the axis. The release configuration includes a lid covering the opening, and the sorbent material being sufficiently enclosed inside the vessel that the regeneration system may operate to release captured CO.sub.2 from the sorbent material and form an enriched gas.

A capture vessel is provided that is configured to capture carbon dioxide (CO.sub.2) according to a thermal swing adsorption (TSA) process. The capture vessel includes capture media that are configured to adsorb CO.sub.2 from an exhaust gas during a CO.sub.2 capture stage to produce a first N.sub.2 gas that exits the capture vessel, receive a mixed stream of CO.sub.2 and water vapor during a wet regeneration stage, adsorb water from the mixed stream of CO.sub.2 and water vapor and release adsorbed CO.sub.2 during the wet regeneration stage to produce a CO.sub.2 stream, receive a first heated N.sub.2 gas and release adsorbed water due to evaporation caused by the first heated N.sub.2 gas during a drying stage, and receive a cooled gas during a cooling stage such that an absorption capacity of the capture media for CO.sub.2 capture is increased for a next CO.sub.2 capture stage.

A redox flow acid-gas capture system includes an electrochemical cell including a cathode configured to contact a stream including an electroactive species in an inactive state and provide a reduced stream including the electroactive species in an active state, and an anode configured to contact an adduct stream including an adduct of an electroactive species and an acid-gas and provide an oxidized stream including the electroactive species in the inactive state and the acid-gas; an absorber configured to contact the reduced stream and the acid-gas and form the adduct stream including the adduct of the electroactive species and the acid-gas; and at least one of an oxygen stripper unit, or a degasser unit configured to provide a degassed stream including the electroactive species in an inactive state, and an acid-gas stream.