The use of kinetic modelling as a tool in the assessment of contaminant release during rehabilitation of a uranium mine

Brown, Paul L.; Lowson, Richard T.

doi:10.1016/s0169-7722(96)00055-1

Cited by 14 publications

(12 citation statements)

References 4 publications

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“…(Mg, Fe, Al) 6 [AlSi 3 O 10 ](OH) 8 ϩ 16H ϩ ⇒ [6(Mg, Fe, Al)] 13ϩ ϩ Al 3ϩ ϩ 3H 4 SiO 4 ϩ 6H 2 O (1) This neutralising ability can be used to advantage in various environmental amelioration situations (Brown and Lowson, 1997;Mayer et al, 1999;Banwart and Malmström, 2001;Salmon and Malmström 2004).…”

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“…However, the homogeneity of a tailings storage facility allows the system to be considered as a single cell and modelling under these conditions is possible using the quasi-steady state algorithm developed by Furrer et al (1989Furrer et al ( , 1990. Model systems based on this approach have been used to assess contaminant release during the rehabilitation of a uranium mine (Brown and Lowson, 1997) and the release of effluent from waste rock dumps (Strömberg and Banwart, 1994;Brown et al, 2000aBrown et al, , 2000b.…”

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confidence: 99%

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The kinetics of the dissolution of chlorite as a function of pH and at 25°C

Lowson

Comarmond

Rajaratnam

et al. 2005

Geochimica et Cosmochimica Acta

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confidence: 99%

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The kinetics of the dissolution of chlorite as a function of pH and at 25°C

Lowson

Comarmond

Rajaratnam

et al. 2005

Geochimica et Cosmochimica Acta

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“…In a recent study on corrosion of the spent nuclear fuel in contact with granite groundwater, the QCS approach was successfully applied to description of the experimental results. 23) The validity and limitations of this assumption have been discussed by Brown and Lowson 24) and van der Lee and De Windt. 25) Geochemical modelling with the QCS approach supports PA by providing consistent solution compositions for equilibrium states, which are relevant for the long periods of time considered in PA.…”

Section: Discussionmentioning

confidence: 99%

Geochemically Based Safety Assessment

Kienzler

Metz

Lützenkirchen

et al. 2007

Journal of Nuclear Science and Technology

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Performance assessment (PA) for nuclear waste disposal based on transport processes frequently neglects significant safety factors by overestimation of radionuclide mobilization and underestimation of radionuclide retention processes. To include well understood geochemical knowledge into PA, the quasi-closed system approach (QCS) was developed. The QCS approach is described and applied to a LLW disposal in a German salt mine with respect to the disposed waste forms, geo-engineered barriers, and backfill strategies. The geochemical tools and the thermodynamic database for modelling highly concentrated salt systems are discussed. Applications are demonstrated which cover the long-term geochemical environment in the disposal caverns, the optimization of buffer materials, radionuclide retention, and the overall robustness of the approach. Also the effect of a potential solution exchange between different emplacement caverns is investigated. It is shown that the QCS approach provides essential data concerning the long-term geochemistry and related radionuclide concentrations to be used in PA and safety analysis.

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“…23) The validity and limitations of this assumption have been discussed by Brown and Lowson 24) and van der Lee and De Windt. 25) Geochemical modelling with the QCS approach supports PA by providing consistent solution compositions for equilibrium states, which are relevant for the long periods of time considered in PA.…”

Section: Discussionmentioning

confidence: 99%

Geochemically Based Safety Assessment

Kienzler

Metz

Lützenkirchen

et al. 2007

J. Nucl. Sci. Technol.

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ÃÃPerformance assessment (PA) for nuclear waste disposal based on transport processes frequently neglects significant safety factors by overestimation of radionuclide mobilization and underestimation of radionuclide retention processes. To include well understood geochemical knowledge into PA, the quasi-closed system approach (QCS) was developed. The QCS approach is described and applied to a LLW disposal in a German salt mine with respect to the disposed waste forms, geo-engineered barriers, and backfill strategies. The geochemical tools and the thermodynamic database for modelling highly concentrated salt systems are discussed. Applications are demonstrated which cover the long-term geochemical environment in the disposal caverns, the optimization of buffer materials, radionuclide retention, and the overall robustness of the approach. Also the effect of a potential solution exchange between different emplacement caverns is investigated. It is shown that the QCS approach provides essential data concerning the long-term geochemistry and related radionuclide concentrations to be used in PA and safety analysis.

show abstract

The use of kinetic modelling as a tool in the assessment of contaminant release during rehabilitation of a uranium mine

Cited by 14 publications

References 4 publications

The kinetics of the dissolution of chlorite as a function of pH and at 25°C

The kinetics of the dissolution of chlorite as a function of pH and at 25°C

Geochemically Based Safety Assessment

Geochemically Based Safety Assessment

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