The uncertainties associated with the application of batch technique for distribution coefficients determination—A case study of cesium adsorption on four different bentonites

Vejsada, J.

doi:10.1016/j.apradiso.2006.05.016

Cited by 13 publications

(2 citation statements)

References 16 publications

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“…Performed analyses and comparison with truly natural bentonite samples from the Rokle deposit (see e.g. Vejsada et al 2005;Vejsada 2006) confirmed its partial activation or contamination with activation reagent. According to the results (Table 1), sodium carbonate was one of the possible reagents.…”

Section: Bentonite Samplementioning

confidence: 78%

“…In a number of other publications (e.g. Boving & Gratwohl 2001;García-Gutiérrez et al 2001, 2006Appelo et al 2010;Glaus et al 2011), practical extensions to bentonites and other clay materials (especially argillaceous rocks) are described. Most of through-diffusion experiments are performed in an arrangement with solution circulation along the filters used to separate compacted clay samples from solutions (e.g.…”

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confidence: 99%

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The uncertainties associated with the application of through-diffusion, the steady-state method: a case study of strontium diffusion

Gondolli

Večerník

2014

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In this study, the uncertainties associated with through-diffusion, the steady-state method used for determination of the pore diffusion coefficient (D p ), were analysed and evaluated. The diffusion of strontium through the sample of compacted bentonite was studied to evaluate various sources of uncertainties and compare their contribution with uncertainty of D p . Different diffusion experiment arrangements were used to test the effect of solution accessibility to the filter membranes. Three main general factors influencing the uncertainty of D p at given conditions were identified: (a) the compacted sample preparation and its physical properties; (b) the properties of the diffusion cell; and (c) the strontium concentration analyses. Some of the identified sources can be treated as fixed with limited extent (e.g. the deformation of components of the diffusion cell), but some sources must be treated as variable with wide extent depending on the experimental conditions (e.g. the physical properties of the compacted bentonite sample -moisture, density, porosity). The variable uncertainty sources have to be taken into account, especially in repeatability and reproducibility tests. It was concluded that each of the diffusion cells with compacted bentonite sample represents a unique diffusion system. It is preferable to present the results of diffusion experiments as a range of values rather than as one average value with an uncertainty.

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Section: Bentonite Samplementioning

confidence: 78%

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confidence: 99%