The present invention proposes a device for the removal of air, including: - at least one module (10) of the culture of plants, each module comprising at least one wall (1) able to be fixed to a vertical wall (50), and an internal cavity (36), - a substrate (4) adapted to be placed in the internal cavity of the module, and a circuit of the irrigation of the substrate (9), the depollution device being characterized in that it further comprises a ventilation circuit (29) of the substrate suitable for drawing off of the polluted air from a source of polluted air and to convey the polluted air into the internal cavity (36) of the module (10).
