The influence of soil properties on sorption-desorption of beryllium at a low level radioactive legacy waste site

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dc.contributor.authorIslam, MRen_AU
dc.contributor.authorSanderson, Pen_AU
dc.contributor.authorJohansen, MPen_AU
dc.contributor.authorPayne, TEen_AU
dc.contributor.authorNaidu, Ren_AU
dc.date.accessioned2025-01-09T21:35:28Zen_AU
dc.date.available2025-01-09T21:35:28Zen_AU
dc.date.issued2021-04en_AU
dc.date.statistics2024-05-09en_AU
dc.description.abstractThis study examined the influence of soil physicochemical properties on the sorption, desorption and kinetics of beryllium (Be) uptake and release on soils from a legacy waste site in Australia. This information is needed to help explain the current distribution of Be at the site and evaluate potential future environmental risks. Sorption was determined by a batch study and key soil properties were assessed to explain Be retention. The soil was favourable for sorption of Be (up to 99%) due to organic content, negative surface charge, soil oxyhydroxides (Fe/Al/Mn–O/OH) and the porosity of the soil structure. Lesser sorption was observed in the presence of a background electrolyte (NaNO3). Sorption closely followed pseudo second order kinetics and was best described by the Langmuir model. FTIR analysis suggested that chemisorption was the predominant mechanism of Be sorption. Desorption was very low and best described by the Freundlich model. The low desorption reflected the high Kd (up to 6624 L/kg), and the presence of hysteresis suggested partially irreversible binding of Be with active surfaces of the soil matrix (minerals, SOM, oxyhydroxides of Fe/Al/Mn etc.). Intra-particle diffusion of Be and entrapment in the pores contribute to the irreversible binding. The sorption behaviour of Be helped to explain the relative immobility of Be at the site despite the significant quantities of Be disposed. Soil physicochemical properties were significant for Be sorption, through influencing both the uptake and desorption, and this demonstrates the implications of these measurements for evaluating potential future risks to the environment. © 2024 Elsevier Ltd.en_AU
dc.format.mediumPrint-Electronicen_AU
dc.identifier.articlenumber129338en_AU
dc.identifier.citationIslam, M. R., Sanderson, P., Johansen, M. P., Payne, T. E., & Naidu, R. (2021). The influence of soil properties on sorption-desorption of beryllium at a low level radioactive legacy waste site. Chemosphere, 268, 129338. doi:10.1016/j.chemosphere.2020.129338en_AU
dc.identifier.issn0045-6535en_AU
dc.identifier.issn1879-1298en_AU
dc.identifier.journaltitleChemosphereen_AU
dc.identifier.urihttps://doi.org/10.1016/j.chemosphere.2020.129338en_AU
dc.identifier.urihttps://apo.ansto.gov.au/handle/10238/15876en_AU
dc.identifier.volume268en_AU
dc.languageEnglishen_AU
dc.language.isoenen_AU
dc.publisherElsevieren_AU
dc.subjectBerylliumen_AU
dc.subjectRadioactive waste storageen_AU
dc.subjectSoilsen_AU
dc.subjectSorptionen_AU
dc.subjectDesorptionen_AU
dc.subjectChemisorptionen_AU
dc.subjectOrganic matteren_AU
dc.subjectContaminationen_AU
dc.subjectNuclear weaponsen_AU
dc.subjectPrecipitationen_AU
dc.titleThe influence of soil properties on sorption-desorption of beryllium at a low level radioactive legacy waste siteen_AU
dc.typeJournal Articleen_AU
dcterms.dateAccepted2020-12-13en_AU
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