Investigation into the Solubilities. Sorption and Migration Behaviour of Agl. CsNO3, Na2U2O7. NpO2OH and Pu(OH)4 in Near-Field-Systems

Marx, G.; Keiling, Ch.

doi:10.1557/proc-127-855

Cited by 2 publications

(1 citation statement)

References 3 publications

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“…A much greater number of studies have been performed of the solubility of Np(V) in the presence of carbonate [Lemire, Boyer, and Campbell, 1993;Marx and Keiling, 1989;Maya, 1983;Neck, Runde, et al, 1994;Nitsche, 1987;Nitsche, 1991;Novak, Nitsche, et al, 1996;Simakin, 1977;Ueno and Sato, 1975;Visyashcheva, Volkov, et al, 19741. No reducing agents or redox buffers were added to these solutions to control the oxidation state of the neptunium during the solubility experiments.…”

Section: Neptuniummentioning

confidence: 99%

Potential for radionuclide immobilization in the EBS/NFE: solubility limiting phases for neptunium, plutonium, and uranium

Rard¹

1997

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Retardation and dispersion in the far field of radionuclides released from the engineered barrier system/near field environment (EBS/NFE) may not be sufficient to prevent regulatory limits being exceeded at the accessible environment. Hence, a greater emphasis must be placed on retardation and/or immobilization of radionuclides in the EBS/NFE. The present document represents a survey of radionuclide-bearing solid phases that could potentially form in the EBS/NFE and immobilize radionuclides released from the waste package and significantly reduce the source term. A detailed literature search was undertaken for experimental solubilities of the oxides, hydroxides, and various salts of neptunium, plutonium, and uranium in aqueous solutions as functions of pH, temperature, and the concentrations of added electrolytes. Numerous solubility studies and reviews were identified and copies of most of the articles were acquired. However, this project was only two months in duration, and copies of some the identified solubility studies could not be obtained at short notice. The results of this survey are intended to be used to assess whether a more detailed study of identified low-solubility phase(s) is warranted, and not as a data base suitable for predicting radionuclide solubility. The results of this survey may also prove useful in a preliminary evaluation of the efficacy of incorporating chemical additives to the EBS/NFE that will enhance radionuclide immobilization.

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Section: Neptuniummentioning

confidence: 99%

Potential for radionuclide immobilization in the EBS/NFE: solubility limiting phases for neptunium, plutonium, and uranium

Rard¹

1997

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IUPAC-NIST Solubility Data Series. 84. Solubility of Inorganic Actinide Compounds

Miyamoto

2007

Journal of Physical and Chemical Reference Data

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This volume presents the solubility of inorganic compounds of actinides except for carbonates, which are included in Volume 74 of this series, and nitrates, which are covered in Volume 55. Also included are solubility data of compounds such as organosulfates, phosphates, and arsenates, which are not covered in Volume 74. The predominant part of this volume covers solubility data of thorium, uranium, neptunium, and plutonium compounds. Fewer data have been published for americium compounds and very few for compounds of actinium, protactinium, and transamericium elements. The literature has been covered up to the end of 2004. Documents which remained unavailable to the editor, and could not be included in the volume are listed in the Appendix. For some compounds it was not possible to show the Chemical Abstracts registry numbers since these have not been assigned.

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Investigation into the Solubilities. Sorption and Migration Behaviour of Agl. CsNO₃, Na₂U₂O₇. NpO₂OH and Pu(OH)₄ in Near-Field-Systems

Cited by 2 publications

References 3 publications

Potential for radionuclide immobilization in the EBS/NFE: solubility limiting phases for neptunium, plutonium, and uranium

Potential for radionuclide immobilization in the EBS/NFE: solubility limiting phases for neptunium, plutonium, and uranium

IUPAC-NIST Solubility Data Series. 84. Solubility of Inorganic Actinide Compounds

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