Patent ID: 8628726

Claim:
A photoreactor, comprising: a photocatalyst, the photocatalyst comprising a cellular β-SiC foam having cells and a photocatalytically active phase deposited directly on said cellular β-SiC foam or on an intermediate phase deposited on said cellular β-SiC foam, wherein the average size of the cells is between 2500 μm and 5000 μm; the photoreactor further comprising a liquid-tight and gas-tight casing element, at least one part of the photocatalyst having a ring shape located inside said casing element, and at least one light radiation source; wherein the photocatalyst comprises a plurality of annular parts, said annular parts having an internal diameter that is alternatively different, so that all of the even-numbered parts have the same internal diameter d 1 , and all of the odd-numbered parts have the same internal diameter d 2 , and said light radiation source is located in the internal diameter of said annular parts.