A reliable adsorbent for MEK (Methyl Ethyl Ketone) was selected to recover it from the ducts of plant, which can solve related environmental problems. Granular activated carbon, activated carbon fiber, and polymer adsorbents were tested with the adsorption and desorption amounts of MEK The adsorbents were loaded into the column and break-through experiments were performed by analyzing the outlet gas from the column by a gas chromatography. Granular activated carbon and activated carbon fiber had high adsorption amounts at first adsorption. After regeneration of the adsorbents at room temperature under vacuum the adsorption amounts decreased. Polymer adsorbents had high adsorption amount at first adsorption and the second adsorption amount was almost equal to the first one after regeneration. During the regeneration MEK was collected with a liquid nitrogen trap. Polymer adsorbents had higher recovery than the activated carbons.