Approaches to modelling uranium(VI) adsorption on natural mineral assemblages

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dc.contributor.authorWaite, TDen_AU
dc.contributor.authorDavis, JAen_AU
dc.contributor.authorFenton, BRen_AU
dc.contributor.authorPayne, TEen_AU
dc.date.accessioned2025-09-14T22:20:12Zen_AU
dc.date.available2025-09-14T22:20:12Zen_AU
dc.date.issued2000-09-01en_AU
dc.date.statistics2025-09-15en_AU
dc.descriptionPhysical copy held by ANSTO Library at DDC: 577.277/32en_AU
dc.description.abstractComponent additivity (CA) and generalised composite (GC) approaches to deriving a suitable surface complexation model for description of U(VI) adsorption to natural mineral assemblages are pursued in this paper with good success. A single, ferrihydrite-like component is found to reasonably describe uranyl uptake to a number of kaolinitic iron-rich natural substrates at pH > 4 in the CA approach with previously published information on nature of surface complexes, acid-base properties of surface sites and electrostatic effects used in the model. The GC approach, in which little pre-knowledge about generic surface sites is assumed, gives even better fits and would appear to be a method of particular strength for application in areas such as performance assessment provided the model is developed in a careful, stepwise manner with simplicity and goodness of fit as the major criteria for acceptance. © 2015 Oldenbourg Wissenschaftsverlag GmbH.en_AU
dc.identifier.booktitleChemistry and Migration Behaviour of Actinides and Fission Products in the Geosphere, proceedings of the seventh international conference Lake Tahoe (California), September 26 - October 01, 1999en_AU
dc.identifier.citationWaite, T. D., Davis, J. A., Fenton, B. R., & Payne, T. E. (2000). Approaches to modelling uranium(VI) adsorption on natural mineral assemblages. Paper presented to Chemistry and Migration Behaviour of Actinides and Fission Products in the Geosphere, proceedings of the seventh international conference Lake Tahoe (California), September 26 - October 01, 1999. In Radiochimica Acta, 88(9-11), 687–694. doi:10.1524/ract.2000.88.9-11.687en_AU
dc.identifier.conferenceenddate1999-10-01en_AU
dc.identifier.conferencenameChemistry and Migration Behaviour of Actinides and Fission Products in the Geosphere, proceedings of the seventh international conferenceen_AU
dc.identifier.conferenceplaceLake Tahoe, Californiaen_AU
dc.identifier.conferencestartdate1999-09-26en_AU
dc.identifier.isbn3846642693en_AU
dc.identifier.issn0033-8230en_AU
dc.identifier.issn2193-3405en_AU
dc.identifier.issue9-11en_AU
dc.identifier.journaltitleRadiochimica Actaen_AU
dc.identifier.pagination687-694en_AU
dc.identifier.urihttps://doi.org/10.1524/ract.2000.88.9-11.687en_AU
dc.identifier.urihttps://apo.ansto.gov.au/handle/10238/16494en_AU
dc.identifier.volume88en_AU
dc.languageEnglishen_AU
dc.language.isoenen_AU
dc.publisherDe Gruyteren_AU
dc.subjectUraniumen_AU
dc.subjectAdsorptionen_AU
dc.subjectMineralsen_AU
dc.subjectSubstratesen_AU
dc.subjectKaoliniteen_AU
dc.subjectUranyl complexesen_AU
dc.subjectIonsen_AU
dc.subjectQuartzen_AU
dc.subjectNeptuniumen_AU
dc.subjectSorptionen_AU
dc.subjectSurfacesen_AU
dc.titleApproaches to modelling uranium(VI) adsorption on natural mineral assemblagesen_AU
dc.typeConference Paperen_AU
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