An approach for acquiring data for description of diffusion in safety assessment of radioactive waste repositories

Vokál, A.; Vopálka, D.; Večerník, Petr

doi:10.1007/s10967-010-0763-6

Cited by 14 publications

(2 citation statements)

References 13 publications

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“…6). In a recent paper, sorption isotherms for cesium in two types of bentonite were plotted [28]. The cesium concentrations were in the range 10 -2 -10 -7 mol/dm 3 .…”

Section: Freundlich Isothermmentioning

confidence: 99%

The sorption behavior of Cs + ion on clay minerals and zeolite in radioactive waste management: sorption kinetics and thermodynamics

Yıldız

Erten

Kış

2011

J Radioanal Nucl Chem

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In this work, Cs? ion sorption on some clays and zeolite were investigated. 137 Cs was used as a tracer. Activities were measured with a NaI crystal gamma counter. The particle size distribution was determined by a laser sizer. Surface area of the particles were determined by BET (Brunauer, Emmett and Teller method). Structure analysis was made by using X-ray diffraction. The chemical compositions of the solid samples were determined using a ICAP-OE spectrometer. Kinetic and thermodynamic parameters were determined. Due to very high uptake results; clay and zeolite can be proposed as a good sorbents in waste management considerations.

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“…6). In a recent paper, sorption isotherms for cesium in two types of bentonite were plotted [28]. The cesium concentrations were in the range 10 -2 -10 -7 mol/dm 3 .…”

Section: Freundlich Isothermmentioning

confidence: 99%

The sorption behavior of Cs + ion on clay minerals and zeolite in radioactive waste management: sorption kinetics and thermodynamics

Yıldız

Erten

Kış

2011

J Radioanal Nucl Chem

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“…For example, in the context of a repository for radioactive waste, the host rock is one important barrier. A potential host type is crystalline rock, e.g., granite, which is considered for a repository in many countries including Germany, Finland, Russia, , Japan, Sweden, and the United States . Granite consists mainly of quartz, mica (e.g., muscovite), and feldspars.…”

Section: Introductionmentioning

confidence: 99%

Effect of Background Electrolyte Composition on the Interfacial Formation of Th(IV) Nanoparticles on the Muscovite (001) Basal Plane

et al. 2021

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Understanding the impact of actinide nanoparticle (NP) formation is important to assess radionuclide mobility in the environment. We combined surface X-ray diffraction (SXRD) and in situ AFM to investigate the previously reported unusual electrolyte effects on Th uptake on mica. At low [Th] (0.1 mM), interfacial structures show a broad Th electron density (∼50 Å). A linear decrease of Th uptake with decreasing hydration enthalpy of the electrolyte cation (Li+, K+, NH4 +, and Cs+) indicates a competitive effect between Th and the electrolyte cation. Na+ is a clear outlier from this trend. In situ AFM imaging confirms the results. Particles show a vertical size of ∼1–2 nm and larger lateral dimensions of ∼10–20 nm, which is typical for particles formed at interfaces (heterogeneous nucleation). At high [Th] = 1 and 3 mM, all investigated electrolytes (ACl, A = Li+, Na+, K+) show similar Th uptake, indicating a much smaller impact of electrolyte composition. The interfacial structures are dominated by a high Th loading at a distinct distance (∼6.5 Å) from the surface. Therefore, the main retention mechanism at high [Th] is suggested to be the sorption of Th NPs aggregated from Th oligomers present in solution (homogeneous nucleation).

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Utilization of Slovak bentonites in deposition of high-level radioactive waste and spent nuclear fuel

Galamboš

Rosskopfová

Kufčáková

et al. 2011

J Radioanal Nucl Chem

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An approach for acquiring data for description of diffusion in safety assessment of radioactive waste repositories

Cited by 14 publications

References 13 publications

The sorption behavior of Cs + ion on clay minerals and zeolite in radioactive waste management: sorption kinetics and thermodynamics

The sorption behavior of Cs + ion on clay minerals and zeolite in radioactive waste management: sorption kinetics and thermodynamics

Effect of Background Electrolyte Composition on the Interfacial Formation of Th(IV) Nanoparticles on the Muscovite (001) Basal Plane

Utilization of Slovak bentonites in deposition of high-level radioactive waste and spent nuclear fuel

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