Quantum Efficiencies in a Multi-annular Photocatalytic Reactor

IMOBERDORF, GUSTAVO EDUARDO; IRAZOQUI, HORACIO ANTONIO; CASSANO, ALBERTO ENRIQUE; ALFANO, ORLANDO MARIO

Goslar, Alemania

Conferencia; IV Conference on Oxidation Technologies for Water and Wastewater Treatment (CUTEC 2006); 2006

CUTEC-Institut GmbH, Clausthal-Zellerfeld, Germany

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.