| 초록 |
One of the representative negative emission technologies (NET) of carbon dioxide (CO2) is direct air carbon capture and storage (DACCS) technology. Since the DACCS targets the dilute CO2 in the air, an aqueous solution absorbent or amine-based adsorbent, which can react to the CO2, has been used. However, CO2 bounded chemically by these adsorbents is hard to desorb and their regeneration step becomes an expensive and energy-intensive process. Recently, some MOFs that interact strongly and physically with CO2 by their narrow pore size have been reported. These physisorption-based MOFs not only capture a moderate amount of CO2 but can be easily regenerated at a relatively low temperature. Moreover, the fiber sorbent platform can reduce the mass transfer resistance and the pressure drop, enabling efficient mass transfer and adsorption/desorption process. Through the combination of the physisorbent and fiber platform, the energy efficiency of the DAC process by estimating the total cycle time and regeneration temperature of the process will be evaluated. |
