The present disclosure concerns systems and sorbents for the removal of carbon dioxide from ambient air. In some aspects, the system includes a wind collector, a body and an outlet. The body has a monolith or platforms dispersed therein, surfaces of which are at least partially coated in a sorbent, such that passing ambient air that contacts the sorbent, thereby allowing for the removal of carbon dioxide therefrom. Sorbents of the present disclosure include substrates that are hybrids of a silica, optionally with a carbonaceous material, and an epoxy-modified aminopolymer.

A quaternary ammonium-functionalized poly(arylene ether sulfone) copolymer for moisture-swing CO2 capture, and a method for producing the same, is disclosed. The copolymer includes a polysulfone copolymer having a copolymerization unit based on diallyl bisphenal A (DABA) and has quaternary ammonium functionalities. The method for preparation of a quaternary ammonium-functionalized poly(arylene ether sulfone) copolymer includes reacting diallyl bisphenol A (DABA) with bisphenol A (BPA) and 4,4'-difluorodiphenyl sulfone (DFDPS) to form an allyl-modified poly(arylene ether sulfone) (PAES-co-APAES) copolymer, then modifying the PAES-co-APAES copolymer to convert the allyl functionalities to tertiary amines, forming tertiary amine-modified PAES (PAES-co-TAPAES) copolymer. The method also includes converting the tertiary amine of the PAES-co-TAPAES copolymer to quaternary ammonium, forming quaternary ammonium-modified PAES. These quaternary ammonium-modified PAES may be processed into membranes, films, and hollow fibers.

It is an object of the present invention to provide a filter which remove acidic gas in the atmosphere with high efficiency and has excellent water resistance. A filter comprising: an aluminium substrate; and an adsorption layer on a surface of the aluminium substrate, wherein the adsorption layer contains activated carbon, a manganese oxide, and an acrylic resin having a pH of 3.0 to 6.5.

A process is disclosed for the removal of hydrogen sulfide (H.sub.2S) from natural. This process provides for passing a natural gas feedstream comprising H.sub.2S though a regenerable adsorbent media which adsorbs H.sub.2S to provide an H.sub.2S-lean natural gas product and H.sub.2S. The regenerable adsorbent media of the present invention is a tertiary amine functionalized cross-linked macroporous polymeric adsorbent media.

The invention relates to a water insoluble solid crosslinked dextrin-based matrix, wherein the crosslinking agent is sodium trimetaphosphate (STMP), its use and method of preparation.

Method for separating gaseous carbon dioxide from air, in particular from ambient atmospheric air (1), by cyclic adsorption/desorption using a sorbent material (3), wherein said sorbent material (3) is a solid inorganic or organic, non-polymeric or polymeric support material functionalized on the surface with amino functionalities capable of reversibly binding carbon dioxide, with a specific BET surface area, preferably measured by nitrogen adsorption, in the range of 1-20 m2/g.

Disclosed herein are supramolecular porous organic nanocomposites for heterogenous photocatalysis as well as methods of making and using the same. The nanocomposite comprises an admixture of a polymeric matrix and a macrocycle.

Sorptive gas separators can employ contactors having various sorbents blended together. The various sorbents used to make a blended sorbent contactor can be selected for their various physical and chemical properties, which will allow operators to customize formulations and structural configurations to obtain optimum performance of sorptive gas separators using blended sorbents.

Articles comprising pressure-sensitive adhesives and methods of their use for removing micro- and nanoplastic particles from various media, including wastewater effluent, laundry effluent, and indoor air, are disclosed.

A gas-absorbing material that contains amino group-having polymer compound particles and fine particles having a primary particle diameter of 1000 nm or less is a gas-absorbing material having a markedly higher gas absorption/desorption speed. Here, as the polymer compound of the amino group-having polymer compound particles, for example, a (meth)acrylamide polymer can be used, and as the fine particles, for example, water-repellent inorganic particles or fluororesin particles can be used.