H2N2V1, Hal, Corpus, bibRecord, 000202

Microbiological disinfection of water and air by photocatalysis

Identifieur interne : 000202 ( Hal/Corpus ); précédent : 000201; suivant : 000203

Microbiological disinfection of water and air by photocatalysis

Auteurs : C. Guillard ; T. H. Bui ; C. Felix ; V. Moules ; B. Lina ; P. Lejeune

Source :

Comptes Rendus Chimie [ 1631-0748 ] ; 2008.

RBID : Hal:hal-00474598

Abstract

This article is aimed at presenting (i) a fundamental research on the efficiency of photocatalysis in water disinfection and (ii) the efficiency of a photocatalytic prototype, developed by Buxair firm, to remove avian influenza virus in air. In water disinfection, two model strains of Escherichia coli (K12 PHL849 and K12 PHL1273) were selected and a comparison of the efficiencies of TiO2 Degussa P-25 versus TiO2 Millennium PC500 were estimated. A more important inactivation of E. coli PHL1273 was obtained on TiO2 Millennium PC500, in line with its better adherence on this solid. An experimental study was performed using a dialysis membrane to investigate the impact of the contact between the microorganisms and the photocatalyst and to determine the role of H2O2 generated in situ. In air disinfection, a total inactivation of virus A/H5N2, close to avian influenza virus A/H5N2, was obtained in a single pass in the Buxair(D gas phase dynamic photoreactor using a contaminated air flow rate of 40 m(3)/h.

Url:

https://hal.archives-ouvertes.fr/hal-00474598

DOI: 10.1016/j.crci.2007.06.007

Links to Exploration step

Hal:hal-00474598

Le document en format XML

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<front><div type="abstract" xml:lang="en">              <p>This article is aimed at presenting (i) a fundamental research on the efficiency of photocatalysis in water disinfection and (ii) the efficiency of a photocatalytic prototype, developed by Buxair firm, to remove avian influenza virus in air. In water disinfection, two model strains of Escherichia coli (K12 PHL849 and K12 PHL1273) were selected and a comparison of the efficiencies of TiO2 Degussa P-25 versus TiO2 Millennium PC500 were estimated. A more important inactivation of E. coli PHL1273 was obtained on TiO2 Millennium PC500, in line with its better adherence on this solid. An experimental study was performed using a dialysis membrane to investigate the impact of the contact between the microorganisms and the photocatalyst and to determine the role of H2O2 generated in situ. In air disinfection, a total inactivation of virus A/H5N2, close to avian influenza virus A/H5N2, was obtained in a single pass in the Buxair(D gas phase dynamic photoreactor using a contaminated air flow rate of 40 m(3)/h.</p>
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Microbiological disinfection of water and air by photocatalysis

Microbiological disinfection of water and air by photocatalysis

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