CPC A61L 9/18 (2013.01) [B01D 53/8628 (2013.01); B01D 53/8668 (2013.01); B01J 21/04 (2013.01); B01J 21/063 (2013.01); B01J 21/08 (2013.01); B01J 35/004 (2013.01); B01J 35/0013 (2013.01); B01J 37/0215 (2013.01); F24F 8/167 (2021.01); A61L 2101/02 (2020.08); A61L 2101/12 (2020.08); A61L 2101/18 (2020.08); A61L 2101/24 (2020.08); A61L 2101/28 (2020.08); A61L 2209/12 (2013.01); A61L 2209/14 (2013.01); A61L 2209/211 (2013.01); A61L 2209/212 (2013.01); A61L 2209/22 (2013.01); B01D 2255/20707 (2013.01); B01D 2255/802 (2013.01); B01D 2257/404 (2013.01); B01D 2257/708 (2013.01)] | 10 Claims |
1. A device (1) for reducing pollutants in a gaseous mixture comprising:
a containment body (2) having an inlet portion (3) for the gaseous mixture and an outlet portion (4) for the processed gaseous mixture, the containment body (2) imposing to the gaseous mixture a fixed direction of flow (D),
at least one filtering unit (10) comprising a photocatalytic filter (7) interposed, along the fixed direction of flow (D), between a first light source (6a) and a second light source (6b), both having a wavelength in the visible spectrum, the photocatalytic filter (7) comprising a photocatalytic nanoparticle coating and the nanoparticle coating comprising titanium dioxide doped with a nitrogen doping agent, the device (1) also comprising a unit (5), positioned before the at least one filtering unit (10), for straightening the flow of the gaseous mixture, for uniformly distributing the flow rate of the gaseous mixture entering horizontally from said inlet portion (3) on the working section of said filtering unit (10), positioned after said unit (5);
wherein the photocatalytic filter (7) is made of ceramic material and comprises at least cordierite and/or mullite; and
wherein the nitrogen doping agent comprises at least ammine.
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