Abstract: An adsorption system according to one aspect of the present disclosure is an adsorption system which adsorbs, from a gas containing a predetermined gas component to be adsorbed and water vapor, the predetermined gas component. The adsorption system includes: an adsorption part configured to adsorb the predetermined gas component from the gas; a measurement unit configured to measure a humidity of the gas; and a flow rate controller configured to control a flow rate of the gas supplied to the adsorption part based on the humidity measured by the measurement unit.

Abstract: A carbon dioxide recovery apparatus and a carbon dioxide recovery method by which energy consumption can be reduced so as to improve CO2 recovery efficiency is provided. A carbon dioxide recovery apparatus includes: an adsorbent configured to adsorb CO2 and H2O; a reaction vessel inside which the adsorbent is disposed; H2O value detection means for detecting an H2O value that is a value related to an amount of H2O adsorbed into the adsorbent; and flow rate adjustment means for adjusting a flow rate of gas flowing into the reaction vessel based on the H2O value detected by the H2O value detection means.

Abstract: An adsorption system according to one aspect of the present disclosure is an adsorption system which adsorbs, from a gas containing a predetermined gas component to be adsorbed and water vapor, the predetermined gas component. The adsorption system includes: an adsorption part configured to adsorb the predetermined gas component from the gas; a measurement unit configured to measure a humidity of the gas; and a flow rate controller configured to control a flow rate of the gas supplied to the adsorption part based on the humidity measured by the measurement unit.

Abstract: A recycling method for a direct air capture device is a recycling method for a direct air capture device including a porous carrier on which a carbon dioxide absorbent is supported. The porous carrier is made of an inorganic material having a hydroxyl group. The carbon dioxide absorbent is a hydrophilic polymer. The recycling method includes removing a used carbon dioxide absorbent from the porous carrier by heating the direct air capture device to a predetermined temperature, and then causing a new carbon dioxide absorbent to be supported on the porous carrier.