Reversible sorption processes are often used in carbon capture to reduce the atmospheric CO2 concentration; however, these processes are energy intensive and costly. Alternatively, carbon capture by membrane is a more energy efficient process with a simpler operation, but it is not yet suitable for large-scale applications. Extending the membrane performance through breakthrough and novel concepts brings practical significances in carbon capture large scale deployment. We suggest a novel process concept, using an ultrathin liquid membrane and improve its separation efficiency by carefully perturbing the sorbent contact angle using controlled pressure and wettability modification. When applied to carbon capture, CO2 will be enriched in the liquid sorbent and its desorption will be also easier from the sorbent. In our proposed system, the energy need is reduced because this continuous process is intensified by capillarity and does not need heating to regenerate the sorbent.

2023

2027