US 12,421,140 B1
Integrated electrocoagulation desalination process with carbon dioxide capture and solid recovery
Ameera Mohammad, Al Ain (AE); and Ali Al Marzouqi, Al Ain (AE)
Assigned to UNITED ARAB EMIRATES UNIVERSITY, Al-Ain (AE)
Filed by United Arab Emirates University, Al Ain (AE)
Filed on Dec. 23, 2024, as Appl. No. 18/999,666.
Int. Cl. B01D 53/32 (2006.01); B01D 53/62 (2006.01); B01D 53/78 (2006.01); C02F 1/46 (2023.01); C02F 1/463 (2023.01); C02F 1/461 (2023.01); C02F 101/20 (2006.01); C02F 103/08 (2006.01)
CPC C02F 1/463 (2013.01) [B01D 53/326 (2013.01); B01D 53/62 (2013.01); B01D 53/78 (2013.01); B01D 2251/2065 (2013.01); B01D 2251/402 (2013.01); B01D 2251/404 (2013.01); B01D 2251/602 (2013.01); B01D 2251/606 (2013.01); C02F 2001/46133 (2013.01); C02F 2001/46152 (2013.01); C02F 2101/20 (2013.01); C02F 2103/08 (2013.01); C02F 2201/46155 (2013.01); C02F 2201/4619 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A method of simultaneous capturing of CO2 and brine desalination comprising the steps of:
a) introducing a brine solution into a reaction chamber of an electrocoagulation (EC) reactor equipped with at least a first electrode and a second electrode, wherein the brine solution contains dissolved Ca, Mg, and Na;
b) adding calcium oxide (CaO) and ammonium bicarbonate (NH4HCO3), to the brine solution to obtain a homogeneous solution;
c) applying an electric current to the homogeneous solution to dissolve the first electrode and the second electrode to generate solid coagulants by an electrocoagulation process;
d) introducing a carbon dioxide (CO2) gas mixture into the brine solution through an inlet tube to facilitate carbonation and capturing of the introduced CO2 in the brine solution, and continuing the electrocoagulation process for 4-5 hours to form solid precipitates of calcium carbonate (CaCO3), magnesium carbonate (MgCO3), and sodium bicarbonate (NaHCO3); and
e) obtaining a desalinated brine solution by filtering the solid precipitate.