Hybrid method for carbon capture
A method of removing carbon dioxide from a gas can include providing a gaseous feed stream including a carbon dioxide gas and adsorbing the carbon dioxide gas with a porous carbon sorbent. The method can further include de-adsorbing the carbon dioxide and combining the carbon dioxide with a substantially pure hydrogen gas to produce at least one of methane and methanol. The adsorbing and de-adsorbing of the carbon dioxide gas can be conducted by an electric swing adsorption.
1. A method of removing carbon dioxide from a gas, comprising:
providing a gaseous feed stream including a carbon dioxide gas;
adsorbing the carbon dioxide gas with a porous carbon sorbent comprising a graphene-based membrane consisting of a nanoporous single-layer graphene;
de-adsorbing the carbon dioxide; and
combining the carbon dioxide with a hydrogen gas to produce at least one of methane or methanol.
2. The method of claim 1 , wherein the gaseous feed stream includes at least one of a flue gas, an exhaust, or a furnace exhaust.
3. The method of claim 1 , wherein the porous carbon sorbent includes a mesoporous structure.
4. The method of claim 1 , wherein the porous carbon sorbent includes an activated carbon including at least one of an activated carbon fiber, an activated graphene, a bituminous-coal-based activated carbon, an activated charcoal, or a coal composite.
5. The method of claim 1 , wherein the porous carbon sorbent includes a carbon foam comprising an activated pitch.
6. The method of claim 1 , wherein combining the carbon dioxide with a hydrogen gas is conducted in the presence of a catalyst.
7. The method of claim 6 , wherein the catalyst includes at least one of molybdenum sulfide, ruthenium, or copper.
8. The method of claim 1 , wherein the adsorbing and de-adsorbing of the carbon dioxide gas is conducted by an electric swing adsorption.