Retention of selenium by calcium aluminate hydrate (AFm) phases under strongly-reducing radioactive waste repository conditions

Author:

Rojo H.12345,Scheinost A. C.678910ORCID,Lothenbach B.1112133,Laube A.123,Wieland E.123,Tits J.123ORCID

Affiliation:

1. Paul Scherrer Institut

2. Laboratory for Waste Management

3. Switzerland

4. Institute for Nuclear Waste Disposal

5. Karlsruhe Institute of Technology

6. The Rossendorf Beamline at ESRF

7. Grenoble

8. France and Institute of Resource Ecology

9. Helmholtz-Zentrum Dresden-Rossendorf

10. Dresden

11. Laboratory for Concrete and Construction Chemistry

12. Empa

13. Dübendorf

Abstract

Strong Se(-ii) sorption mainly in the interlayer of hemicarbonate (AFm-HC). Weak Se(-ii) sorption restricted to sorption sites on the surface of monocarbonate (AFm-MC).

Funder

German Federal Ministry for Education and Research

Publisher

Royal Society of Chemistry (RSC)

Subject

Inorganic Chemistry

Reference45 articles.

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2. U. Berner , Project Opalinus Clay: Radionuclide Concentration Limits in the Cementitious Near-Field of an ILW Repository , PSI Bericht Nr. 02-26, Paul Scherrer Institut , Villigen, Switzerland and Nagra Technical Report NTB 02-22, Wettingen, Switzerland, 2003

3. P. Wersin , L. H.Johnson , B.Schwyn , U.Berner and E.Curti , Redox Conditions in the Near Field of a Repository for SF/HLW and ILW in Opalinus Clay , Nagra Technical Report NTB 02-13, Wettingen, Switzerland , 2003

4. Å. Olin , B.Noläng , E. G.Osadchii , L.-O.Öhman and E.Rosén , Chemical thermodynamics of Selenium , Elsevier , Amsterdam , 2005

5. Sorption of Selenite and Selenate to Cement Minerals

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