NOVELTY - Carbon monoxide is removed by humidifying the reformate; moving the humidified reformate through a first portion of a cell; adsorbing carbon monoxide on the catalytic material; producing an electrical current through the electrode catalytic material that has adsorbed the carbon monoxide; and converting the carbon monoxide that has adsorbed on the catalytic material.    USE - For removing carbon monoxide from hydrocarbon reformate.    ADVANTAGE - The invention is highly efficient, displays enhanced tolerance to CO concentration swings, reduces parasitic hydrogen consumption, and eliminates venting of CO into the atmosphere. The invention can be operated simply and economically, and operates at temperature and pressures of a fuel cell during the start-up mode.    DETAILED DESCRIPTION - Carbon monoxide is removed from hydrocarbon reformate by humidifying the reformate to form a humidified reformate; moving the reformate through a first portion of a cell containing a catalytic material; adsorbing the CO on catalytic material such that adsorption capacity of material is reduced; producing an electrical current through the catalytic material that has adsorbed the CO, where the electric current galvanically produced in the absence of an external power source by an electric circuit between the two portions of the cell; and converting the CO that has adsorbed on the catalytic material to carbon dioxide, to generate the adsorption capacity of catalytic material. INDEPENDENT CLAIMS are also included for:    (1) a method of providing direct current power from hydrocarbon reformate containing CO comprising the above method;    (2) an electrocatalytic oxidation processor comprising (i) a pair of bipolar plates; (ii) a first portion containing a catalytic material which adsorbs CO and disposed intermediate the bipolar plates; (iii) a second portion separated from the first portion by a proton permeable membrane and disposed intermediate the bipolar plates; and (iv) an electrical circuit comprising two conductive lead electrically connected to the two portions;    (3) an electrocatalytic oxidation system comprising an anode; a cathode; a proton permeable membrane operatively disposed between the anode and cathode; and an electrical circuit between the anode and cathode, producing an electrical current by one of galvanic and electrolytic reaction; and    (4) a CO removal system comprising a fuel processor that processes a hydrocarbon fuel containing CO; an electrocatalytic oxidation processor downstream of fuel processor, in which the processor comprising a catalytic material having a support and metal component, where the catalytic material is capable of adsorbing CO over hydrogen in the hydrocarbon fuel; and an electrical circuit that produces an electrical current through the catalytic material to convert CO that is adsorbed on catalytic material to carbon dioxide.