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Effects of technica...
Effects of technical adsorbents and cleaning agents in a cement matrix - A case study
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Dario, M. (författare)
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- Molera, Mireia (författare)
- KTH,Kemi
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Allard, B. (författare)
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(creator_code:org_t)
- 2004
- 2004
- Engelska.
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Ingår i: Mater Res Soc Symp Proc. - 1558997520 ; , s. 371-376
- Relaterad länk:
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https://urn.kb.se/re...
Abstract
Ämnesord
Stäng
- 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.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering (hsv//eng)
Nyckelord
- 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
Publikations- och innehållstyp
- ref (ämneskategori)
- kon (ämneskategori)
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