Air collector with functionalized ion exchange membrane for capturing ambient CO
Disclosed is a process for forming a CO 2 capture element comprises providing a mixture of a monomer or monomer blend or a polymer binder, a miscible liquid carrier for the binder and a CO 2 sorbent or getter in particle form, forming the mixture into a wet film or membrane, evaporating the liquid carrier to form a film or membrane, and treating the wet film or membrane to form pores in the body of the film or membrane. Also disclosed is a process of forming a CO 2 capture element which comprises the steps of applying a mixture including a sorbent material and a polymer to an underlying material; polymerizing the mixture in place on the material; and aminating the polymer-coated material.
1. A method for the capture of CO 2 from air, comprising capturing CO 2 from atmospheric air with a solid capture material, and treating said solid capture material to release captured CO 2 ; wherein said solid capture material (i) comprises a CO 2 sorbent material comprising a polymer immobilized in or on a porous support material; and (ii) has a CO 2 adsorption capacity higher than 1.9 mmol/g.
2. The method of claim 1 , wherein said solid capture material comprises a polymer selected from the group consisting of: polybisphenol-A-carbonate, poly(ethylene terephthalate), polystyrene, poly(methyl methacrylate), poly(vinyl acetate), poly(vinyl chloride), polytetrafluoroethylene, polysulfone, polyether sulfone, poly(vinylidene fluoride), styrene/butyl acrylate/methacrylic acid terpolymer, and poly(vinylidene fluoride-cohexafluoropropylene).
3. The method of claim 1 , wherein said solid capture material is formed using a CO 2 sorbent comprising particles having a diameter between 10-1000 micrometers.
4. The method of claim 1 , wherein the CO 2 sorbent material content of said solid capture material is 20% to 80% by weight.
5. The method of claim 1 , further comprising releasing CO 2 captured by said solid capture material by hydrating said solid capture material.
6. The method of claim 1 , wherein said solid capture material releases CO 2 when hydrated.
7. The method of claim 1 , wherein said CO 2 sorbent material comprises an ion exchange resin.
8. The method of claim 7 , wherein said ion exchange resin comprises a Type I or Type II functionality ion exchange resin.
9. The method of claim 1 , wherein said CO 2 sorbent material comprises polysulfone, poly(vinylidene fluoride-co-hexafluoropropylene), or vinyl benzyl chloride.