Comparative study of Gram-negative bacteria response to solar photocatalytic inactivation.
Fiche publication
Date publication
juin 2018
Journal
Environmental science and pollution research international
Auteurs
Membres identifiés du Cancéropôle Est :
Pr SCHNEIDER Raphaël
Tous les auteurs :
Achouri F, BenSaid M, Bousselmi L, Corbel S, Schneider R, Ghrabi A
Lien Pubmed
Résumé
Solar photocatalytic inactivation of Gram-negative bacteria with immobilized TiO-P25 in a fixed-bed reactor was modeled with simplified kinetic equations. The kinetic parameters are the following: the photocatalytic inactivation coefficient (k), the initial bacterial reduction rate (A) in the contact with the disinfecting agent, and the threshold level of damage (n) were determined to report the effect of Q/TiO-P25 on bacterial cultivability and viability and to compare the response of bacterial strains to photocatalytic treatment. In addition, the integration of the reactivation coefficient (C) in the photocatalytic inactivation equation allowed evaluating the ability of bacterial reactivation after photocatalytic stress. Results showed different responses of the bacteria strains to photocatalytic stress and the ability of certain bacterial strains such as Escherichia coli ATCC25922 and Pseudomonas aeruginosa ATCC4114 to resuscitate after photocatalytic treatment.
Mots clés
Inactivation kinetic, Photocatalysis, Reactivation, Solar irradiation, TiO2-P25
Référence
Environ Sci Pollut Res Int. 2018 Jun 3;: