| abstract |
a material includes a porous particle that includes a metal ion printed polymer. The metal ion-printed polymer is formed from a hydrophilic comonomer, a metal-containing polymerizable compound, and a crosslinking agent. the metal-containing polymerizable compound includes at least one metal-chelation binder. the metal ion printed polymer includes a plurality of selective metal ion binding sites. one method includes flowing brine containing a metal ion through a reactor that includes the material. the method additionally includes discharging the brine from the reactor, bringing the porous particles into contact with the water, and pressurizing the reactor with carbon dioxide. carbon dioxide reacts with the absorbed metal ions to form a metal carbonate solution. the method further includes depressurizing the reactor to precipitate the metal carbonate from the metal carbonate solution and discharging the metal carbonate solution from the reactor. |