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Journal of Advanced Oxidation Technologies

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Volume 5, Issue 1


Thermophotocatalytic Degradation of Gaseous Organic Pollutants

Alessandro Selvaggi / Alberto David / Piergiorgio Zappelli
Published Online: 2016-11-30 | DOI: https://doi.org/10.1515/jaots-2002-0113


A new efficient apparatus for the destruction of toxic gaseous compounds has been developed. It consists of a reactor equipped with quartz windows, inside which a TiO2 covered alumina substrate can be heated and UV illuminated. Gaseous pollutants, circulated batchwise with a pump, have been decomposed under three different conditions: a) photocatalytic (PC), by irradiating the catalyst surface with UV light; b) thermocatalytic (TC), by heating the catalyst support; c) thermophotocatalytic (TPC), by combining the two technologies. Experiments performed on trichloroethylene (TCE) and chlorobenzene (CB) polluted streams demonstrated for the TPC condition vs. the PC one, additive and synergistic effects, respectively, produced by the combination of the two kinds of energy. Particularly impressive are the results of the pollutant mineralization: for TCE, the recovered CO2 was 71% under TPC condition, vs. 21% under PC condition. An even better result was obtained for the CB degradation: the recovered CO2 was 98% under TPC condition vs. 17% under PC condition.

Keywords: thermophotocatalysis; photocatalytic oxidation; titanium dioxide; ultraviolet light; organic pollutants decontamination

About the article

Received: 1999-08-10

Revised: 2000-04-15

Accepted: 2000-08-20

Published Online: 2016-11-30

Published in Print: 2002-01-01

Citation Information: Journal of Advanced Oxidation Technologies, Volume 5, Issue 1, Pages 107–112, ISSN (Online) 2371-1175, ISSN (Print) 1203-8407, DOI: https://doi.org/10.1515/jaots-2002-0113.

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