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Geochemical controls on U immobilization in the subsurface

  • Malgorzata Stylo
  • Daniel Alessi
  • Shao Paul
  • John Bargar
  • Rizlan Bernier-Latmani
Conference paper

Abstract

The implementation of engineered solutions to U contamination in the subsurface results in reductive immobilization of uranium in the form of U(IV) precipitates, including mineral phases, i.e., uraninite (UO2), or non-crystalline biomass-associated U(IV) agglomerates. Crystalline uraninite is a preferable end product for U bioremediation due to its greater resistance to re-oxidation and re-mobilization processes in comparison to non-crystalline biomass-associated U(IV) species. Nevertheless, under field conditions, the latter species was reported to be predominant. According to our findings, the groundwater composition exerts significant control over the product of non-crystalline U(IV) species in the field

Keywords

Extracellular Polymeric Substance Geochemical Condition Extracellular Polymeric Substance Production Linear Combination Fitting Geochemical Control 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer International Publishing Switzerland 2015

Authors and Affiliations

  • Malgorzata Stylo
    • 1
  • Daniel Alessi
    • 1
  • Shao Paul
    • 1
  • John Bargar
    • 2
  • Rizlan Bernier-Latmani
    • 1
  1. 1.Environmental Microbiology LaboratoryÉcole Polytechnique Fédérale de Lau-sanneLausanneSwitzerland
  2. 2.Chemistry and Catalysis DivisionStanford Synchrotron Radiation Lightsource, SLAC National Accelerator LaboratoryMenlo ParkUSA

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