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

Información del proyecto

FRANCIS CLARET

Identificador del acuerdo de subvención: FIKW-CT-2002-50509

Proyecto cerrado

Fecha de inicio 1 Agosto 2002

Fecha de finalización 31 Julio 2004

Financiado con arreglo a

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

Coste total € 147 150,00

Aportación de la UE € 147 150,00

Coordinado por

FORSCHUNGSZENTRUM KARLSRUHE GMBH - TECHNIK UND UMWELT
Germany

Objetivo

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.

Ámbito científico (EuroSciVoc)

CORDIS clasifica los proyectos con EuroSciVoc, una taxonomía plurilingüe de ámbitos científicos, mediante un proceso semiautomático basado en técnicas de procesamiento del lenguaje natural.

• ingeniería y tecnología › otras ingenierías y tecnologías › ingeniería nuclear › gestión de residuos nucleares
• ingeniería y tecnología › ingeniería ambiental › gestión de residuos
• ciencias naturales › ciencias físicas › física de la materia condensada › física de la materia blanda

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Programa(s)

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

Tema(s)

• 2.1.2. - Key action Nuclear Fission

Convocatoria de propuestas

Data not available

Régimen de financiación

RGI - Research grants (individual fellowships)

Coordinador

FORSCHUNGSZENTRUM KARLSRUHE GMBH - TECHNIK UND UMWELT

• Aportación de la UE: Sin datos
• Dirección: Herrmann-von-Helmholtz-Platz 1 ; 76344 EGGENSTEIN-LEOPOLDSHAFEN ; Alemania
• Coste total: Sin datos