Adsorption / desorption method and adsorption / desorption device

摘要

An object of the present invention is to provide an adsorption / desorption method having high adsorption and desorption efficiency in a liquid phase and an adsorption / desorption device for carrying out the method. The adsorption / desorption method of the present invention contains a substance to be adsorbed in a container in which a granular adsorbent is accommodated in a flowable state and has a portion that gradually increases as the cross-sectional area of the lumen gradually increases from bottom to top. An adsorption step of supplying a liquid to the bottom of the container, causing the liquid to flow upward in the container lumen and causing at least a part of the granular adsorbent to flow, and adsorbing the adsorption target substance on the granular adsorbent; a liquid containing the adsorption target substance The process of discharging the liquid accumulated in the container lumen from the bottom of the container, and then supplying the liquid for desorbing the adsorption target substance from the granular adsorbent to the container to desorb the adsorption target substance from the granular adsorbent And a step of stopping the supply of the liquid for desorbing the substance to be adsorbed from the particulate adsorbent and then discharging the liquid accumulated in the container lumen from the bottom of the container.