Patent ID: 7993511

Claim:
An electrochemical system comprising: a cathode electrolyte comprising added carbon dioxide and in contact with a cathode in a cathode compartment; a first cation exchange membrane separating the cathode electrolyte from an anode electrolyte wherein the anode electrolyte is in contact with an anode in an anode compartment and comprises a salt and an acid; a mineral dissolution system operatively connected to the anode compartment and wherein the mineral dissolution system is configured to dissolve a mineral with the acid in the anode electrolyte and produce a mineral solution comprising divalent cations, un-reacted acid and the salt; and a nano-filtration system operatively connected to the mineral dissolution system and wherein the nano-filtration system is configured to receive the mineral solution and produce a first mineral solution comprising the salt and un-reacted acid, and a second mineral solution comprising divalent cations.