Quantum efficiencies in a multi-annular photocatalytic reactor

Radiative energy efficiencies of a multi-annular photocatalytic reactor were evaluated and analysed. 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)...

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Bibliographic Details
Published in:Water science and technology 2007-01, Vol.55 (12), p.161-166
Main Authors: Imoberdorf, G.E, Irazoqui, H.A, Cassano, A.E, Alfano, O.M
Format: Article
Language:English
Subjects:
absorption
air pollution
Catalysis
Catalysts
Computing time
Digestive absorption
Efficiency
elementary particles
Mathematical models
Photochemistry
Photons
Pollutants
Quantum efficiency
Quantum Theory
Radiation
Radiation absorption
Reactors
tetrachloroethylene
Tetrachloroethylene - chemistry
wastewater treatment
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Summary:Radiative energy efficiencies of a multi-annular photocatalytic reactor were evaluated and analysed. 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.
ISSN:0273-1223
1996-9732
DOI:10.2166/wst.2007.396