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| Title: | Incorporation of cerium and neodymium in uranyl phases |
| Author (s): | Kim, Cheol-Woon Wronkiewicz, David J. Finch, Robert J. Buck, Edgar C. |
| Department/Lab Affiliations: | Geological Sciences & Engineering |
| Keywords: | crystalline compounds precipitating uranyl phases |
| Subject Terms: | Rare earth metals. |
| Issue Date: | 2006 |
| Publisher: | Elsevier |
| Citation: | Kim, Cheol-Woon, Wronkiewicz, D.J., Finch, R.J., and Buck, E.C. “Incorporation of cerium and neodymium in uranyl phases.” Journal of Nuclear Materials, vol. 353, no. 3, pp. 147-157, 2006. |
| Abstract: | The potential for incorporating rare earth elements (REE) into/onto crystalline compounds has been evaluated by precipitating uranyl phases from aqueous solutions containing either cerium or neodymium. These REEs serve both as monitors for evaluating the potential repository behavior of REE radionuclides, and as surrogate elements for actinides (e.g., Ce4+ and Nd3+ for Pu4+ and Am3+, respectively). The present experiments examined the behavior of REE in the presence of ianthinite View the MathML source, becquerelite (Ca(UO2)6O4(OH)6(H2O)8), and other uranyl hydroxide compounds commonly noted as alteration products during the corrosion of UO2, spent nuclear fuel, and naturally occurring uraninite. The results of these experiments demonstrate that significant quantities of both cerium (Kd = 1020) and neodymium (Kd = 840) are incorporated within the uranium alteration phases and suggest that ionic substitution and/or adsorption to the uranyl phases can play a key role in the limiting the mobility of REE (and by analogy, actinide elements) in a nuclear waste repository. |
| Type: | Article - Journal text |
| In Title: | Journal of Nuclear Materials |
| Copyright Notice: | This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder. Pre-print: author can archive with restrictions;Restriction: This does not include Cell Press; Post-print: author can archive; FULL COPYRIGHT INFORMATION: |
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| title | Incorporation of cerium and neodymium in uranyl phases |
| contributor.author | Kim, Cheol-Woon |
| contributor.author | Wronkiewicz, David J. |
| contributor.author | Finch, Robert J. |
| contributor.author | Buck, Edgar C. |
| contributor.deptlab | Geological Sciences & Engineering |
| contributor.sponsor | Argonne National Laboratory |
| contributor.sponsor | U.S. Department of Energy |
| subject | crystalline compounds |
| subject | precipitating uranyl phases |
| subject.LCSH | Rare earth metals. |
| date.issued | 2006 |
| publisher | Elsevier |
| identifier.citation | Kim, Cheol-Woon, Wronkiewicz, D.J., Finch, R.J., and Buck, E.C. “Incorporation of cerium and neodymium in uranyl phases.” Journal of Nuclear Materials, vol. 353, no. 3, pp. 147-157, 2006. |
| identifier.pub.URI | |
| description.abstract | The potential for incorporating rare earth elements (REE) into/onto crystalline compounds has been evaluated by precipitating uranyl phases from aqueous solutions containing either cerium or neodymium. These REEs serve both as monitors for evaluating the potential repository behavior of REE radionuclides, and as surrogate elements for actinides (e.g., Ce4+ and Nd3+ for Pu4+ and Am3+, respectively). The present experiments examined the behavior of REE in the presence of ianthinite View the MathML source, becquerelite (Ca(UO2)6O4(OH)6(H2O)8), and other uranyl hydroxide compounds commonly noted as alteration products during the corrosion of UO2, spent nuclear fuel, and naturally occurring uraninite. The results of these experiments demonstrate that significant quantities of both cerium (Kd = 1020) and neodymium (Kd = 840) are incorporated within the uranium alteration phases and suggest that ionic substitution and/or adsorption to the uranyl phases can play a key role in the limiting the mobility of REE (and by analogy, actinide elements) in a nuclear waste repository. |
| type | Article - Journal |
| type.DCMIType | text |
| type.status | Postprint |
| rights | This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder. |
| rights | Pre-print: author can archive with restrictions;Restriction: This does not include Cell Press; Post-print: author can archive; |
| rights.URI | |
| relation.isPartOf | Journal of Nuclear Materials |
| date.available | 2008-07-30T19:48:32Z |
| identifier.persist.URI |