Environmental Science and Pollution Research

, Volume 26, Issue 19, pp 18961–18970 | Cite as

Comparative study of Gram-negative bacteria response to solar photocatalytic inactivation

  • Faouzi AchouriEmail author
  • Myriam BenSaid
  • Latifa Bousselmi
  • Serge Corbel
  • Raphaël Schneider
  • Ahmed Ghrabi
Advanced Oxidation Process for Sustainable Water Management


Solar photocatalytic inactivation of Gram-negative bacteria with immobilized TiO2-P25 in a fixed-bed reactor was modeled with simplified kinetic equations. The kinetic parameters are the following: the photocatalytic inactivation coefficient (kd,QUV), 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 QUV/TiO2-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 (Cr) 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.


Photocatalysis TiO2-P25 Solar irradiation Inactivation kinetic Reactivation 


Funding information

This work is partially supported by the Tunisian- French project PHC Utique CMCU 14G0821.


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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Faouzi Achouri
    • 1
    • 2
    • 3
    Email author
  • Myriam BenSaid
    • 1
  • Latifa Bousselmi
    • 1
  • Serge Corbel
    • 2
  • Raphaël Schneider
    • 2
  • Ahmed Ghrabi
    • 1
  1. 1.Centre de Recherches et des Technologies des Eaux (CERTE)Laboratoire Eaux Usees et environnementSolimanTunisia
  2. 2.Université de Lorraine, Laboratoire Reactions et Genie des Procedes (LRGP), UMR7274, CNRSNancy CedexFrance
  3. 3.Faculté des Sciences de BizerteUniversité de CarthageBizerteTunisia

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