African Journal of
Microbiology Research

  • Abbreviation: Afr. J. Microbiol. Res.
  • Language: English
  • ISSN: 1996-0808
  • DOI: 10.5897/AJMR
  • Start Year: 2007
  • Published Articles: 5177

Full Length Research Paper

The role of ferrates (VI) as a disinfectant: Quantitative and qualitative evaluation for the inactivation of pathogenic bacteria

  Abdellatif EL MAGHRAOUI1, Abdelaziz ZEROUALE1, Mustapha IJJAALI1 and Kawtar FIKRI BENBRAHIM2*
  1Laboratory of Chemistry of Condensed Mater (LCMC), Sciences and Technology Faculty, Sidi Mohammed Ben Abdellah University. P. O. Box 2202 Fez (Morocco). 2Laboratory of Microbial Biotechnology, Sciences and Technology Faculty, Sidi Mohammed Ben Abdellah University. P. O. Box 2202 Fez (Morocco).
Email: [email protected]

  •  Accepted: 26 April 2013
  •  Published: 12 July 2013

Abstract

 

Iron compounds in the oxidation state (VI) have the advantage of being powerful antioxidants and bactericides, which explains their particular interest in water treatment.The aim of this work was to investigate the ability of inhibition of pathogenic microorganisms (Escherichia coli, Salmonella, Staphylococcus aureus, Bacillus sp., Pseudomonas sp., Enterococcus feacalis) by ferrate and for the first time, to evaluate their capacity to resist ferrate Na2FeO4 in order to optimize its concentration in specific conditions. The doses required to inhibit these microorganisms are respectively: 5 mg / l, 8 mg / l, 6 mg / l, 4.5 mg / l, 6.3 mg / l and 7.6 mg /l. The application to establish our results was made through the sanitation of water of the river Mehraz (Fez - Morocco). Because of the resistance of indigenous bacteria and the influence of different parameters, we optimized the concentration of Na2FeO4 to 30 mg /l.

 

Key words: Potassium Ferrate (VI), water sanitation, disinfectioncoagulation,wastewater treatment, bactericidal.