Table 2 Comparison of energy towards CO for gas-phase CO2 electrolysis, hydroxide- and amine-based reactive capture
System | Gas-phase CO2 electrolysis | Hydroxide-based reactive capture | Amine-based reactive capture (this work) |
|---|---|---|---|
CO2 capture (GJ tCO−1) | 10.3 | 0.5 | 0.5 |
Electrolysis (GJ tCO−1) | 23.0 | 56.3 | 29.7 |
CO2 utilization (%) | 25 | 100 | 9 |
CO2 recovery (GJ tCO−1) | 21.7 | 0 | 10.0 |
Total (GJ tCO−1) | 55.0 | 56.8 | 40.2 |
