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Effects of technical adsorbents and cleaning agents in a cement matrix - A case study
KTH, Superseded Departments, Chemistry.
2004 (English)In: Mater Res Soc Symp Proc, 2004, 371-376 p.Conference paper (Refereed)
Abstract [en]

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.

Place, publisher, year, edition, pages
2004. 371-376 p.
, Materials Research Society Symposium Proceedings, ISSN 0272-9172 ; 807
Keyword [en]
Adsorbents, Cleaning, Degradation, Europium, Organic ion exchangers, pH effects, Radioactive waste disposal, Reaction kinetics, Titanium dioxide, Alkaline degradation products, Cement matrix, Molecular organics, Organic cleaning agents, Cement additives
National Category
Materials Engineering
URN: urn:nbn:se:kth:diva-157653ISI: 000225038400061ScopusID: 2-s2.0-12844277326ISBN: 1-55899-752-0OAI: diva2:770997
Scientific Basis for Nuclear Waste Management XXVII, 15-19 June 2003, Kalmar, Sweden

QC 20141212

Available from: 2014-12-12 Created: 2014-12-11 Last updated: 2014-12-12Bibliographically approved

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Molera, Mireia
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