The uranium ore from Mina Fe (Salamanca, Spain) as a natural analogue of processes in a spent fuel repository

Villar, Luis; Bruno, Jordi; Campos, Rocío; Gómez, P.; Cózar, J.S.; Garralón, A.; Buíl, B.; Arcos, David; Carretero, G; Sánchez-Porro, J Ruiz; Hernán, Pedro

doi:10.1016/s0009-2541(02)00127-4

Cited by 34 publications

(6 citation statements)

References 12 publications

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“…Phase IV (1999IV ( −2003 was used to verify existing work involving granite technologies while beginning research into clay technologies. For their granite studies, research was conducted as part of the restoration process of old uranium mines, with the intent of developing generic approaches into the characterization and operation of a facility within a granite lithology (Escuder-Viruete et al, 2001;2004;Gómez et al, 2001;Pérez del Villar et al, 2002;. It was within this stage that the Spanish began to obtain a database on the processes and parameters for the long-term storage of HLW with respect to the durability, hydrogeology, hydrogeochemistry, geomechanics, and the transport and migration of radionuclides.…”

Section: Status Of Site Selectionmentioning

confidence: 99%

Preliminary study on hydrogeology in tectonically active areas.

Lowry¹,

Lappin²,

Gettemy³

et al. 2006

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Section: Status Of Site Selectionmentioning

confidence: 99%

Preliminary study on hydrogeology in tectonically active areas.

Lowry¹,

Lappin²,

Gettemy³

et al. 2006

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“…An example of a use for this methodology could be the storage of nuclear waste in deep subsurface layers, the behavior of a radionuclide in such a context and its possible long term fate in association with either the mineral or the liquid phase (Bruno et al, 1998;Curti, 1999;Pérez del Villar et al, 2002). A second example concerns the case of geological CO 2 storage, where the acidification of water due to CO 2 injection dissolves a part of the rock, which can lead to the mobilization of significant amounts of trace elements (Kharaka et al, 2009;Little and Jackson, 2010;Pauwels et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Zn(II), Mn(II) and Sr(II) Behavior in a Natural Carbonate Reservoir System. Part I: Impact of Salinity, Initial pH and Initial Zn(II) Concentration in Atmospheric Conditions

Auffray

García

Lienemann

et al. 2016

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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-The sorption of inorganic elements on carbonate minerals is well known in strictly controlled conditions which limit the impact of other phenomena such as dissolution and/or precipitation. In this study, we evidence the behavior of Zn(II) (initially in solution) and two trace elements, Mn(II) and Sr(II) (released by carbonate dissolution) in the context of a leakage from a CO 2 storage site. The initial pH chosen are either equal to the pH of the water-CO 2 equilibrium (~2.98) or equal to the pH of the water-CO 2 -calcite system (~4.8) in CO 2 storage conditions. From this initial influx of liquid, saturated or not with respect to calcite, the batch experiments evolve freely to their equilibrium, as it would occur in a natural context after a perturbation. The batch experiments are carried out on two natural carbonates (from Lavoux and St-Emilion) with P CO 2 = 10 À3.5 bar, with different initial conditions ([Zn(II)] i from 10 À4 to 10 À6 M, either with pure water or 100 g/L NaCl brine). The equilibrium regarding calcite dissolution is confirmed in all experiments, while the zinc sorption evidenced does not always correspond to the two-step mechanism described in the literature. A preferential sorption of about 10% of the concentration is evidenced for Mn(II) in aqueous experiments, while Sr(II) is more sorbed in saline conditions. This study also shows that this preferential sorption, depending on the salinity, is independent of the natural carbonate considered. Then, the simulations carried out with PHREEQC show that experiments and simulations match well concerning the equilibrium of dissolution and the sole zinc sorption, with log K Zn(II)~2 in pure water and close to 4 in high salinity conditions. When the simulations were possible, the log K values for Mn(II) and Sr(II) were much different from those in the literature obtained by sorption in controlled conditions. It is shown that a new conceptual model regarding multiple Trace Elements (TE) sorption is required, to enable us to better understand the fate of contaminants in natural systems.

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“…It can decrease the aggregation, improve the activity and carrying capacity of nZVI to use illite as a support material to load nZVI. Illite [34][35][36] and Fe [37,38] have been always found in uranium deposits. It has the possibility for uranium ore formation while using I-nZVI as Permeable Reactive Barriers in remediation of uranium.…”

Section: Introductionmentioning

confidence: 99%

Illite-supported nanoscale zero-valent iron for removal of 238U from aqueous solution: characterization, reactivity and mechanism

Chen

Cui

et al. 2014

J Radioanal Nucl Chem

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In this work, illite was used to support zerovalent iron nanoparticles to remove 238 U in aqueous solutions. Compared to nZVI, I-nZVI shows high stability and removal efficiency. Removal process of U on I-nZVI can be concluded into four stages in illite dominated zone, Fe 0 released zone, ferrous dominated zone and reaction equilibrium zone. The study shows that illite is a good dispersant and stabilizer which decreases the aggregation of nZVI and improves the activity of Fe 0 . Removal capacity of U on I-nZVI achieves 1.79 lg/mg. I-nZVI is an efficient and promising remediation material for waste-soluble uranium compounds.

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The uranium ore from Mina Fe (Salamanca, Spain) as a natural analogue of processes in a spent fuel repository

Cited by 34 publications

References 12 publications

Preliminary study on hydrogeology in tectonically active areas.

Preliminary study on hydrogeology in tectonically active areas.

Zn(II), Mn(II) and Sr(II) Behavior in a Natural Carbonate Reservoir System. Part I: Impact of Salinity, Initial pH and Initial Zn(II) Concentration in Atmospheric Conditions

Illite-supported nanoscale zero-valent iron for removal of 238U from aqueous solution: characterization, reactivity and mechanism

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