Patent ID: 7875163

Claim:
An integrated system comprising: an electrochemical system comprising a first cell containing a cathode electrolyte, the cathode electrolyte contacting a cathode and comprising a hydroxide, a second cell containing an anode electrolyte, the anode electrolyte contacting an anode, wherein the cathode is configured to produced hydroxide ions and hydrogen gas and the anode is configured to absorb hydrogen gas and produce protons without producing a gas on application of a voltage across the anode and cathode, a third cell separated from the cathode electrolyte by an ion exchange membrane and connected to a source of concentrated salt solution and configured to receive the concentrated salt solution and produce a depleted salt solution, a fourth cell separated from the second and third cells by ion exchange membranes and configured to produce a concentrated acid solution; a system configured for absorbing a gas in the cathode electrolyte operably connected to the electrochemical system wherein the gas comprises waste gases of a cement production plant or a power generating plant; and a material dissolution system operably connected to the electrochemical system and configured to utilize the acid and/or hydroxide in the cathode electrolyte to dissolve a calcium and/or magnesium rich material and produce a divalent cation solution.