Determination of equilibrium isotherms using dynamic column breakthrough and constant flow equilibrium desorption

Reliable adsorption equilibrium data are key elements in the design of an adsorption separation process. Two excellent methods for obtaining single-component equilibrium isotherm data are the dynamic column breakthrough method and the constant flow equilibrium desorption method. Both these methods were used to derive the equilibrium isotherms of methane, ethane, and propane in activated carbon and silica gel. The experimental setup and analysis required for these methods are elaborated. The equilibrium results for these gases for a moderate pressure range and at three different temperatures are presented.