Abstract: Method to remove organic halogenated molecules from gaseous currents arriving as a residue of industrial working processes or not, the gaseous current being delivered into a reactor (16) containing a fluid bed consisting of at least one solid adsorbent element after having undergone at least one filtration followed by a cooling, the gaseous current cooperating with the solid particles with exchange by adsorption between the gaseous current and the solid particles, the reactor (16) achieving a time of contact between the gaseous current and the solid particles at least longer than 3 seconds, the gaseous current which enters the reactor (16) having a temperature lower than 80.degree. C., but advantageously between 30.degree. and 70.degree. C., the cooling of the gaseous current upstream of the reactor (16) being followed by a gas/water or gas/air heat exchanger (13).