A carbon dioxide separation recovery method includes: bringing a particulate carbon dioxide adsorbent and a treatment target gas containing carbon dioxide into contact with each other to make the carbon dioxide adsorbent adsorb the carbon dioxide contained in the treatment target gas; and bringing the carbon dioxide adsorbent which has adsorbed the carbon dioxide and superheated steam into contact with each other to desorb the carbon dioxide from the carbon dioxide adsorbent and thereby regenerate the carbon dioxide adsorbent, and recovering the desorbed carbon dioxide. A saturation temperature of the superheated steam which is brought into contact with the carbon dioxide adsorbent is not more than a temperature of the carbon dioxide adsorbent which contacts the superheated steam. The regenerated carbon dioxide adsorbent is utilized for adsorption of the carbon dioxide again without being subjected to a drying step.

The present disclosure provides for alkyl-aryl amine rich molecules impregnated into various porous substrates were examined for potential use as sorbents for CO.sub.2 capture from dilute and ultra-dilute gas streams such as flue gas and ambient air, respectively.

The present disclosure provides for materials comprising porous structures supporting (e.g., disposed therein and/or thereon) alkyl diamine-substituted aryl compounds, methods of making the materials and components thereof, methods of use thereof, and the like. In an aspect, the materials can be used to separate CO.sub.2 and/or adsorb CO.sub.2 in one or more CO.sub.2 capture or separation applications. In one aspect, the sorbent material can be used to separate and capture CO.sub.2 in gas mixtures (e.g., ambient air, flue gas, exhaust, and mixtures of these) in a wide range of concentrations. As a result, embodiments of the present disclosure are advantageous in that they can be used in different types of CO.sub.2 concentration environments.

The present invention concerns a device and process for capturing CO.sub.2 from air. The device comprises (a) a membrane at least partly permeable for air comprising a solid state CO.sub.2 sorbent; (b) at least one sorption chamber; (c) at least one regeneration chamber; (d) means for transporting the membrane from the sorption chamber to the regeneration chamber and back; (e) an inlet for receiving air located on one end of the membrane and an outlet for discharging air depleted in CO.sub.2 located on the other end of the membrane in the sorption chamber, wherein the device is configured to allow air to flow from the inlet to the outlet through the membrane; (f) means for flowing stripping gas through the membrane into the regeneration chamber; (g) at least one outlet for discharging CO.sub.2, located in the regeneration chamber; and (h) heating means for heating the regeneration chamber. The device according to the invention provides an efficient and low-cost solution for capturing CO.sub.2 directly from air.

A modular, multi-crew life support system and a method of assembling the system involve a fan to draw in ambient air. The system includes one or more assemblies that produce conditioned air from the ambient air, and a housing to support an oxygen source. The system also includes a port configured as an inlet from the oxygen source to augment the conditioned air, and a duct to disperse a result of augmenting the conditioned air as output air to support two or more occupants of an enclosure.

Solar thermal units and methods of operating solar thermal units for the conversion of solar insolation to thermal energy are provided. In some examples, solar thermal units have an inlet, and a split flow of heat absorbing fluid to either side of the solar thermal unit, along a first fluid flow path and a second fluid flow path. Optionally, one or more photovoltaic panels can be provided as part of the solar thermal unit, which may convert solar insolation to electric power that may be used by a system connected to the solar thermal unit.

A tablet having a deliquescent desiccant and a fragrance encapsulated on or within a binding agent. The tablet is in a pressed form. A method of making a tablet involves providing a deliquescent desiccant, encapsulating a fragrance by spray drying the fragrance on a carbohydrate, combining the deliquescent desiccant and the carbohydrate encapsulated fragrance, and pressing the combination into the tablet.

An air treatment system for at least partially removing at least one gaseous contaminant contained in indoor air of a room structured for human occupants. The system may comprise an air treatment assembly having an indoor air inlet configured to receive indoor airflow directly from a room, a regenerable adsorbent material configured to adsorb at least one gaseous contaminant contained in the indoor airflow, at least one airflow element for directing the indoor airflow to flow through the air treatment assembly, an indoor air outlet for expelling the indoor air, from the air treatment assembly back into the room, a purge air inlet configured to receive and direct purge air over and/or through the adsorbent material for removal of at least a portion of the at least one gaseous contaminant, and a purge air outlet for expelling the purge air out of the air treatment assembly.

Solar thermal units and methods of operating solar thermal units for the conversion of solar insolation to thermal energy are provided. In some examples, solar thermal units have an inlet, and a split flow of heat absorbing fluid to either side of the solar thermal unit, along a first fluid flow path and a second fluid flow path. Optionally, one or more photovoltaic panels can be provided as part of the solar thermal unit, which may convert solar insolation to electric power that may be used by a system connected to the solar thermal unit.

Disclosed is an air cleaner filter containing an improved organic gel, wherein an ultra-high efficiency organic gel microbial air (UGMA) filter cartridge has a nano-porous texture on organic gel in spongy carcass diameters of which are randomly distributed, randomly distributed organic gel in spongy carcass as microbial retainer generated by a layer covering inner surfaces of a spongy carcass having randomly distributed pores at the grade selected in the range of 0.5 mm to 2.5 mm according to need, air inlet channels that allow air to be passed into sandwich structure UGMA filter cartridge, air flow channels such that microbial loads smaller than 0.1 pm are retained by pores and the air wipes the nano-pores by generating micro turbulence therein. Also disclosed is a production method for manufacturing the UGMA filter.