NOVELTY - A feed gas mixture comprising argon and nitrogen and/or methane is provided, portion(s) of feed gas mixture is contacted with nitrogen-selective adsorbent and/or methane-selective adsorbent in cyclic pressure swing adsorption process by adsorbing portion(s) of nitrogen on nitrogen-selective adsorbent and adsorbent comprising adsorbed nitrogen and/or adsorbing portion(s) of the methane on the methane-selective adsorbent. The adsorbed nitrogen and/or adsorbed methane are desorbed in regeneration steps. Thus argon recovery method is carried out.    USE - Recovery of argon used for manufacturing steel, cutting and welding of metals, metal sintering and electronic component fabrication.    ADVANTAGE - The argon is recovered with high purity by removing contaminants from waste argon.    DETAILED DESCRIPTION - A feed gas mixture comprising argon and nitrogen and/or methane is provided, a portion(s) of the feed gas mixture is contacted with nitrogen-selective adsorbent and/or methane-selective adsorbent in a cyclic pressure swing adsorption process by adsorbing portion(s) of the nitrogen on the nitrogen-selective adsorbent in a pressure range (I) above atmospheric pressure to provide a purified argon product and an adsorbent comprising adsorbed nitrogen and/or adsorbing portion(s) of the methane on the methane-selective adsorbent in the pressure range (I) above atmospheric pressure to provide a purified argon product and an adsorbent comprising adsorbed methane. The adsorbed nitrogen and/or the adsorbed methane are desorbed in regeneration steps effected in pressure super-atmospheric pressure lass than any pressure in pressure range (I). The cyclic pressure swing adsorption process is effected at an average operating temperature of 0 degrees C or more. Thus argon recovery method is carried out. An INDEPENDENT CLAIM is included for apparatus for argon recovery, which comprises pressure swing adsorption system having an inlet, an outlet, and parallel adsorber vessels, each adsorber vessel containing adsorbent material adapted for the selective adsorption of nitrogen from a mixture comprising nitrogen and argon and/or selective for the adsorption of methane from a mixture comprising nitrogen and methane.