Key role of the kinetics of γ-FeOOH bioreduction on the formation of Fe(II–III) minerals

  • G. Ona-Nguema
  • F. Jorand
  • O. Benali
  • M. Abdelmoula
  • J.-M. R. Génin
  • J.-C. Block
Conference paper

Abstract

During bacterial reduction of γ-FeOOH lepidocrocite in the presence of formate as electron donor at initial pH 7.5 in bicarbonate buffer, the obtained Fe(II–III) minerals were characterised by transmission Mössbauer spectroscopy (TMS) and X-ray diffraction (XRD). Two types of kinetics, high and slow, of γ-FeOOH bioreduction were obtained. The high rate of ferric oxyhydroxide reduction produced magnetite whereas the slow rate yielded hydroxycarbonate green rust.

Keywords

Biomass Clay Glycerol Filtration Electrophoresi 

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Copyright information

© Springer Science+Business Media Dordrecht 2002

Authors and Affiliations

  • G. Ona-Nguema
    • 1
  • F. Jorand
    • 1
  • O. Benali
    • 2
  • M. Abdelmoula
    • 1
  • J.-M. R. Génin
    • 1
  • J.-C. Block
    • 1
  1. 1.Laboratoire de Chimie Physique et Microbiologie pour l’EnvironnementCNRS-Université Henri Poincaré-Nancy 1Villers-lès-NancyFrance
  2. 2.Département de Chimie, Faculté des SciencesUniversité Ibn TofailKénitraMorocco

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