Clay as a potential humic colloid source - implications for nuclear waste disposal

Informazioni relative al progetto

FRANCIS CLARET

ID dell’accordo di sovvenzione: FIKW-CT-2002-50509

Progetto chiuso

Data di avvio 1 Agosto 2002

Data di completamento 31 Luglio 2004

Finanziato da

• Research and training programme (Euratom) in the field of nuclear energy (1998 to 2002)

Costo totale € 147 150,00

Contributo UE € 147 150,00

Coordinato da

FORSCHUNGSZENTRUM KARLSRUHE GMBH - TECHNIK UND UMWELT
Germany

Obiettivo

The objective is to investigate the potential for conversion of clay organic matter into dissolved humicor humic alike substances under conditions relevant for nuclear waste disposal in the presence of cement. The project is based on preliminary investigations under aerobic conditions with clay rich inorganic matter that has not been consolidated under elevated temperatures. In the present project, investigations will be extended to anoxic conditions and clays with high temperature consolidated clay organic matter.
Two different clays are contacted with alkaline solution up to around 550 days. The alkaline solution reflects conditions resulting from cement dissolution. The generation of humic substances is monitored and important properties for radio nuclide complexation and mobility are determined. This includes determination of functional group content (proton exchange capacity), actinide complexation studies. molecular mass and size distribution. Simultaneously, the morphology of clay during the alkaline treatment is studied as well as the generation of new phases. Generation and characterization of clay mineral colloids is also studied. Results are interpreted in view of the potential: impact on actinide mobility in the near field of disposed radioactive waste.

Campo scientifico (EuroSciVoc)

CORDIS classifica i progetti con EuroSciVoc, una tassonomia multilingue dei campi scientifici, attraverso un processo semi-automatico basato su tecniche NLP.

• ingegneria e tecnologia › altre ingegnerie e tecnologie › ingegneria nucleare › gestione dei rifiuti radioattivi
• ingegneria e tecnologia › ingegneria ambientale › gestione dei rifiuti
• scienze naturali › scienze fisiche › fisica della materia condensata › fisica della materia soffice

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Programma(i)

• FP5-EAECTP C - Research and training programme (Euratom) in the field of nuclear energy (1998 to 2002)

Argomento(i)

• 2.1.2. - Key action Nuclear Fission

Invito a presentare proposte

Data not available

Meccanismo di finanziamento

RGI - Research grants (individual fellowships)

Coordinatore

FORSCHUNGSZENTRUM KARLSRUHE GMBH - TECHNIK UND UMWELT

• Contributo UE: Nessun dato
• Indirizzo: Herrmann-von-Helmholtz-Platz 1 ; 76344 EGGENSTEIN-LEOPOLDSHAFEN ; Germania
• Costo totale: Nessun dato