One embodiment includes a contamination limiter for a spacecraft. The contamination limiter includes a body having an interior. An inlet is fluidly coupled to the interior of the body. A collector plate is positioned within the interior of the body. A UV light source is directed at a surface of the collector plate. An exterior vent is fluidly coupled to the interior of the body. A volatile condensable material from the spacecraft is photofixed by the UV light exposure to the collector plate prior to venting through an exterior vent to an exterior of the spacecraft.

One embodiment includes a contamination limiter for a spacecraft. The contamination limiter includes a body having an interior. An inlet is fluidly coupled to the interior of the body. A collector plate is positioned within the interior of the body. A UV light source is directed at a surface of the collector plate. An exterior vent is fluidly coupled to the interior of the body. A volatile condensable material from the spacecraft is photofixed by the UV light exposure to the collector plate prior to venting through an exterior vent to an exterior of the spacecraft.

A plant for purifying a gas stream comprising at least 0.02% by volume of water, CO.sub.2 and NOx, comprising an adsorber characterized by: a cavity (1); an adsorbent (2) included in the cavity (1); an outer casing (3) made of carbon steel; an inner casing (4) made of stainless steel making a space having a width of between 10 and 100 mm between said inner casing and the outer casing, said space being at equal pressure with the cavity.

A plant for purifying a gas stream comprising at least 0.02% by volume of water, CO.sub.2 and NOx, comprising an adsorber characterized by: a cavity (1); an adsorbent (2) included in the cavity (1); an outer casing (3) made of carbon steel; an inner casing (4) made of stainless steel making a space having a width of between 10 and 100 mm between said inner casing and the outer casing, said space being at equal pressure with the cavity.

A cartridge mounting an air treatment material is a housing defining a housing in a perimeter. The air treatment material is received within the housing, and spaced from the inner wall of the housing by a plurality of resilient sheets. There is an inlet direction into the housing for air flowing across the air treatment material and an outlet opening on an opposed side of the housing. There are top and bottom surfaces and side surfaces forming a perimeter about the air treatment material. The resilient sheets extend substantially continuously across the side surfaces and the top and bottom surfaces at least at the inlet end to increase airflow across the air treatment material. An enclosed inhabited space is also disclosed and claimed.

A sorbent structure that includes a continuous body in the form of a flow-through substrate comprised of at least one cell defined by at least one porous wall. The continuous body comprises a sorbent material carbon substantially dispersed within the body. Further, the temperature of the sorbent structure can be controlled by conduction of an electrical current through the body.

A sorbent structure that includes a continuous body in the form of a flow-through substrate comprised of at least one cell defined by at least one porous wall. The continuous body comprises a sorbent material carbon substantially dispersed within the body. Further, the temperature of the sorbent structure can be controlled by conduction of an electrical current through the body.

This invention relates to a Cu-BTC MOF which is water stable. The Cu-BTC MOF has been modified by substituting some of the BTC ligand (1,3,5, benzene tricarboxylic acid) with 5-aminoisophthalic acid (AIA). The resultant MOF retains at least 40% of its as synthesized surface area after exposure to liquid water at 60° C. for 6 hours. This is an unexpected result versus the MOF containing only the BTC ligand. This MOF can be used to abate contaminants such as ammonia in gas streams and especially air streams.

This invention relates to a Cu-BTC MOF which is water stable. The Cu-BTC MOF has been modified by substituting some of the BTC ligand (1,3,5, benzene tricarboxylic acid) with 5-aminoisophthalic acid (AIA). The resultant MOF retains at least 40% of its as synthesized surface area after exposure to liquid water at 60° C. for 6 hours. This is an unexpected result versus the MOF containing only the BTC ligand. This MOF can be used to abate contaminants such as ammonia in gas streams and especially air streams.

The present application is directed to a method for the conversion of nitrous acid to dinitrogen gas. In particular, the present application relates to a method for the conversion of nitrous acid to dinitrogen gas by contacting the nitrous acid with an amine-functionalized metal organic framework.