fig6

Figure 6. Efficiency of concerted CO₂ capture and conversion system using 2 M MEA to capture CO₂ from a flue gas containing 15% CO₂/5% O₂/80% N₂ or 5% CO₂/5% O₂/90% N₂ and conducting electrolysis of the CO₂-capturing MEA at 50 mA·cm^-2 for 24 h: (A) pH evolution during CO₂ capture and subsequent conversion; (B) FE for CO and H₂ production; (C) cumulative volume of CO and H₂ products; (D) CO₂ capture efficiency. The shaded region in Figure 6A shows the pH change in the solution during 12 and 24 h CO₂ capture from simulated flue gases (15% CO₂/80% N₂/5% O₂ and 5% CO₂/90% N₂/5% O₂) using 2 M MEA. MEA: Monoethanolamine.