Technologies capable of decreasing the atmospheric CO2 concentration.
As atmospheric carbon dioxide (CO2) concentrations continue to increase this solution is becoming an interesting approach.
A start is to Capture the CO2 emitted by existing power sources, CO2 capture is more efficient and less costly at high concentrations, such as in the flue gas emitted by coal plants.
CO2 capture directly from the atmosphere, is difficult due to the low atmospheric concentration of CO2 (0.039%).
Captured CO2 can be sequestered underground, used for industrial processes, or used as a component of synthetic fuel. Concentrated CO2 can be combined with hydrogen from electrolysis to form liquid hydrocarbon fuel.