Under an applied voltage (~ 6 V) clear production of inorganic carbon salts and acids was observed. The product fluxes for HCl and NaHCO3 were ~ 0.05 mM cm-2 hr-1 on average for the case of dissolved CO2 and ~ 3.50 mM cm-² hr-1 for the case of gaseous CO2 showing an enhancement factor of about 70x in the flux rates with the use of gaseous CO2.
The bench-top (3.24 cm2 electrodes) cell has been successfully scaled up (1,500x) to a 5,000 cm² NORASCAND® commercial-scale electrolytic cell. Chemicals such as hydrochloric acid and bicarbonate salts have potential uses in many applications including oil and gas exploration and production where the chemicals as well as the desalinated water can be used in resource extraction. Coupling of CO2 removal and water treatment as presented here has potential applications in both conventional and unconventional oil and gas operations. Evolution of the technology from the conceptual bench-top reactor to initial scale up efforts and the current status of technology will be presented during the meeting.