Ligand-Induced U Mobilization from Chemogenic Uraninite and Biogenic Noncrystalline U(IV) under Anoxic Conditions
Kyle J. Chardi, Anshuman Satpathy, Walter D. C. Schenkeveld, Naresh Kumar, Vincent Noël, Stephan M. Kraemer, Daniel E. Giammar
Abstract
, while a much larger extent of the 300 μM of biomass-bound noncrystalline U(IV) was mobilized (up to 57%) within only 2 days (>500 times more U mobilization). This work shows the potential of numerous organic ligands present in the environment to mobilize both recalcitrant and labile U forms under anoxic conditions to hazardous levels and, in doing so, undermine the stability of immobilized U(IV) sources.
Topics & Concepts
UraniniteAnoxic watersChemistryLigand (biochemistry)DissolutionAqueous solutionUraniumEnvironmental remediationEnvironmental chemistryMedicinal chemistryNuclear chemistryInorganic chemistryOrganic chemistryReceptorContaminationBiochemistryMetallurgyEcologyBiologyMaterials scienceRadioactive element chemistry and processingRadioactivity and Radon MeasurementsAtmospheric and Environmental Gas Dynamics