HEAT EXCHANGER OF AN AIR-CONDITIONING SYSTEM OF A CABIN OF AN AIRCRAFT, AND SYSTEM COMPRISING SUCH A HEAT EXCHANGER

Heat exchanger of an air-conditioning system of a cabin of a transport vehicle, comprising: a primary circuit supplied by a first air flow (), a secondary circuit supplied by a second air flow (), a casing () defining an air-circulation enclosure (), a primary circuit inlet box () allowing entry into said air-circulation enclosure, and a primary circuit outlet box () allowing exit from the air-circulation enclosure, characterized in that said inlet box () is mounted removably on said casing (), and in that it houses a three-dimensional structure () forming a catalytic and/or adsorbent support for treating the air of said primary circuit, and a means for distributing said first air flow into said heat-exchange matrix.