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Effects of Technical Adsorbents and Cleaning Agents in a Cement Matrix – A Case Study

Published online by Cambridge University Press:  01 February 2011

Mårten Dario ,
Mireia Molera  and
Bert Allard
Mårten Dario
Affiliation:
Dept of Water and Environmental Studies, Linköping Univ., SE–581 83 Linköping, SWEDEN
Mireia Molera
Affiliation:
Dept of Chem./Nuclear Chem., Royal Inst. of Technology, SE–100 44 Stockholm, SWEDEN
Bert Allard
Affiliation:
MTM Research Centre, Örebro Univ., SE–701 82 Örebro, SWEDEN
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Abstract

The effects of organic cleaning agents (totally three) and degradation products from solid technical adsorbents (two) on the sorption of Eu on cement and TiO2 were measured with variation of concentration (0.001–10 % of the water phase for the cleaning agents, alkaline degradation products corresponding to 0.03–8 mM DOC for the adsorbents) and reaction time (up to 420 d). The effects of the cleaning agents Industrikombi and Prefect Citron were minor. The degradation of the ion exchanger (metaacrylic polymer) had no significant effect on the Eu-sorption. The other adsorbent (filter aid, inert fibre; acrylonitrile polymer) was rapidly degrading at high pH, and the degradation products had a significant reducing effect on the sorption of Eu at added DOC-levels in the mM-range. This category of adsorbent materials should not be incorporated in a cement waste matrix or be stored in a cementitious environment together with radionuclides.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 807: Symposium Scientific Basis for Nuclear Waste Management XXVII , 2003 , 371
Copyright
Copyright © Materials Research Society 2004

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References

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