Alligator Rivers analogue project. Uranium sorption. Final report - volume 13

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dc.contributor.authorWaite, TDen_AU
dc.contributor.authorPayne, TEen_AU
dc.contributor.authorDavis, JAen_AU
dc.contributor.authorSekine, Ken_AU
dc.date.accessioned2025-07-22T06:21:05Zen_AU
dc.date.available2025-07-22T06:21:05Zen_AU
dc.date.issued1992en_AU
dc.date.statistics2024-11en_AU
dc.description.abstractIn this volume, the results of studies of uranium sorption (adsorption and desorption) to both single, well-defined mineral phases, and to selected natural (Koongarra) substrates are reported. The single phases included the amorphous iron oxide ferrihydrite, crystalline silica and two naturally occurring kaolinites, KGa-1 and Nichika. The surface properties of these materials were rigorously defined, and adsorption studies were conducted over a range of solution pH, ionic strength, carbonate content, adsorbent and adsorbate concentrations, and in the presence of uranium complexants and (potentially) competing adsorbates (such as phosphate and fluoride). The results of these studies were modelled using the 'surface complexation' approach, with a diffuse layer description of the electrical double layer. The impacts of mineral phase transformations (specifically the aging of amorphous ferrihydrite to more crystalline forms) on the uptake and desorption of uranium are also reported. The amount of data obtained in this study, with a number of experimental parameters being varied over a wide range, has enabled more confidence to be placed in the modelling results. The derived model for ferrihydrite adequately accounts for the effect on U sorption of a number of parameters, most notably pH, pCO2 and total U present. Few (if any) of the models previously proposed are adequate in this respect. While the modelling of the data for the natural substrates is not as advanced, the U sorption data on the natural substrates show similar features to the U sorption on the model substrates. This suggests that the insights obtained in the modelling of the data for ferrihydrite will be valuable in deriving a model for the more complex natural substratesen_AU
dc.identifier.citationWaite, T. D., Payne, T. E., Davis, J. A., & Sekine, K. (1992). Alligator Rivers analogue project. Uranium sorption. Final report - volume 13, Menai, Sydney, NSW, Australia: Australian Nuclear Science and Technology Organisation.en_AU
dc.identifier.govdoc9982en_AU
dc.identifier.isbn0642599394en_AU
dc.identifier.otherDOE/HMIP/RR/92/0823en_AU
dc.identifier.otherSKI TR 92:20-13en_AU
dc.identifier.pagination1-106en_AU
dc.identifier.urihttps://apo.ansto.gov.au/handle/10238/16322en_AU
dc.identifier.volume13en_AU
dc.language.isoenen_AU
dc.publisherAustralian Nuclear Science and Technology Organisationen_AU
dc.subjectAlpha spectraen_AU
dc.subjectAlpha spectroscopyen_AU
dc.subjectChemical reaction kineticsen_AU
dc.subjectComputerized simulationen_AU
dc.subjectEquilibriumen_AU
dc.subjectExperimental dataen_AU
dc.subjectFluoridesen_AU
dc.subjectGeochemistryen_AU
dc.subjectIron hydridesen_AU
dc.subjectKaoliniteen_AU
dc.subjectKoongarra depositen_AU
dc.subjectNatural analogueen_AU
dc.subjectpH Valueen_AU
dc.subjectPhase transformationsen_AU
dc.subjectPhosphatesen_AU
dc.subjectPhosphorescenceen_AU
dc.subjectQuartzen_AU
dc.subjectSeparation processesen_AU
dc.subjectSorptionen_AU
dc.subjectSorptive propertiesen_AU
dc.subjectSubstratesen_AU
dc.subjectSurface propertiesen_AU
dc.subjectUraniumen_AU
dc.subjectUranium oresen_AU
dc.subjectUranyl carbonatesen_AU
dc.subjectActinide compoundsen_AU
dc.subjectActinidesen_AU
dc.subjectAluminium compoundsen_AU
dc.subjectSilicatesen_AU
dc.subjectCarbon compoundsen_AU
dc.titleAlligator Rivers analogue project. Uranium sorption. Final report - volume 13en_AU
dc.typeBooken_AU
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