Quantum Efficiencies in a Multi-annular Photocatalytic Reactor

IMOBERDORF, G.E.; IRAZOQUI, H.A.; CASSANO, A.E.; ALFANO, O.M.

Oxidation Technologies for Water Treatment and Wastewater Treatment

Verlag

Lugar: Goslar; Año: 2006; p. 195 - 200

Radiative energy efficiencies of a multi-annular photocatalytic reactor was evaluated and analyzed. The total quantum efficiency, defined as the ratio of the number of molecules of the pollutant reacted to the number of photons emitted by the lamp, is expressed as the product of three factors: (i) the reactor radiation incidence efficiency, (ii) the catalyst radiation absorption efficiency, and (iii) the overall reaction quantum efficiency. By means of a detailed mathematical model, the numerical values of each one were 83%, 92%, and 0-2.5%, respectively. The dependence of the overall reaction quantum efficiency upon operating variables was also studied.