Relationship of quantitative X-ray diffraction measurements of geologic materials to cesium sorption

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dc.contributor.authorPayne, TEen_AU
dc.contributor.authorBertram, WKen_AU
dc.contributor.authorItakura, Ten_AU
dc.contributor.authorRaven, MDen_AU
dc.date.accessioned2025-09-16T23:53:04Zen_AU
dc.date.available2025-09-16T23:53:04Zen_AU
dc.date.issued2002-09-01en_AU
dc.date.statistics2025-09-17en_AU
dc.descriptionPhysical copy held by ANSTO Library at DDC: 577.277/47.en_AU
dc.description.abstractThe amounts of clay minerals in geologic samples from the Australian arid zone were measured using the SIROQUANT program, which quantifies mineral abundances from X-ray diffraction patterns using the Rietveld method. The sorption of trace cesium on the same samples was investigated in batch experiments. The statistical relationships between the Cs distribution coefficients (Kdvalues) and the smectite, illite and kaolinite contents were assessed. Other characterisation data such as the BET surface area and total clay content were included in the statistical analysis. The correlation of the illite content with the Kdfor trace Cs was stronger than any other correlation that was tested. This can be attributed to the presence of frayed edge sites on illite which are highly selective for the adsorption of trace Cs. Sorption experiments were also carried out with higher Cs concentrations, which were expected to saturate the selective Cs sorption sites on illite. Under these conditions, there was no significant correlation between the illite content and the cesium Kd. However, the Kdwas related to the smectite content of the materials. There was no correlation between the kaolinite content and the Kdfor Cs sorption under any of the experimental conditions. The sorption of Cs on the samples was influenced by the BET surface areas, but normalisation of the Kddata by surface area did not fully explain the sorption results. Only the quantitative XRD data were able to explain the shapes of Cs sorption isotherms. The isotherm was distinctly different for an illite-rich sample and did not conform to the Freundlich isotherm exhibited by other samples. This study demonstrates that quantitative XRD measurements are valuable in predicting Cs sorption properties of complex geologic samples, particularly sorption data obtained with trace Cs levels where bulk measurements such as the BET surface area are less useful. © Oldenbourg Wissenschaftsverlag, Münchenen_AU
dc.identifier.booktitleChemistry and migration behaviour of actinides and fission products in the geosphere : proceedings of the eighth International Conference in Bregenz (Austria), September 16-21, 2001en_AU
dc.identifier.citationPayne, T. E., Bertram, W. K., Itakura, T., & Raven, M. D. (2002). Relationship of quantitative X-ray diffraction measurements of geologic materials to cesium sorption. Paper presented to Chemistry and migration behaviour of actinides and fission products in the geosphere : eighth International Conference in Bregenz (Austria), September 16-21, 2001. In Radiochimica Acta, 90(9-11), 705–711. doi:10.1524/ract.2002.90.9-11_2002.705en_AU
dc.identifier.conferenceenddate2001-09-21en_AU
dc.identifier.conferencenameChemistry and migration behaviour of actinides and fission products in the geosphere : eighth International Conferenceen_AU
dc.identifier.conferenceplaceBregenz, Austriaen_AU
dc.identifier.conferencestartdate2001-09en_AU
dc.identifier.isbn9783486642723en_AU
dc.identifier.issn0033-8230en_AU
dc.identifier.issn2193-3405en_AU
dc.identifier.issue9-11en_AU
dc.identifier.journaltitleRadiochimica Actaen_AU
dc.identifier.pagination705-711en_AU
dc.identifier.urihttps://doi.org/10.1524/ract.2002.90.9-11_2002.705en_AU
dc.identifier.urihttps://apo.ansto.gov.au/handle/10238/16498en_AU
dc.identifier.volume90en_AU
dc.languageEnglishen_AU
dc.language.isoenen_AU
dc.publisherDe Gruyteren_AU
dc.subjectAdsorptionen_AU
dc.subjectAlkali metalsen_AU
dc.subjectCesiumen_AU
dc.subjectClaysen_AU
dc.subjectIlliteen_AU
dc.subjectCoherent scatteringen_AU
dc.subjectDiffractionen_AU
dc.subjectKaoliniteen_AU
dc.subjectSmectiteen_AU
dc.subjectSorptive propertiesen_AU
dc.subjectTrace amountsen_AU
dc.subjectX-ray diffractionen_AU
dc.subjectMineralsen_AU
dc.subjectScatteringen_AU
dc.subjectSorptionen_AU
dc.subjectSurface propertiesen_AU
dc.titleRelationship of quantitative X-ray diffraction measurements of geologic materials to cesium sorptionen_AU
dc.typeConference Paperen_AU
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