The capture process typically involves contacting liquid water with the feed gas and raising pressure/lowering the temperature to values that thermodynamically permit the hydrate phase. This leads to the formation of a mixed gas hydrate, which, upon its growth, consumes both water and gas. For efficient CO 2 separation, pressure and temperature are set such that the mole fraction of CO 2 is significantly larger in the hydrate than in the gas phase. Eventually, this process transforms streams of water and CO 2 -rich feed gas into streams of CO 2 -rich hydrate and CO 2 -depleted product gas. Regeneration of the captured CO 2 is readily achieved by overheating or under-pressurizing regarding the thermodynamic stability conditions.