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

Project Information

FRANCIS CLARET

Grant agreement ID: FIKW-CT-2002-50509

Project closed

Start date 1 August 2002

End date 31 July 2004

Funded under

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

Total cost € 147 150,00

EU contribution € 147 150,00

Coordinated by

FORSCHUNGSZENTRUM KARLSRUHE GMBH - TECHNIK UND UMWELT
Germany

Objective

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.

Fields of science (EuroSciVoc)

CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques.

• engineering and technology › other engineering and technologies › nuclear engineering › nuclear waste management
• engineering and technology › environmental engineering › waste management
• natural sciences › physical sciences › condensed matter physics › soft matter physics

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Programme(s)

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

Topic(s)

• 2.1.2. - Key action Nuclear Fission

Call for proposal

Data not available

Funding Scheme

RGI - Research grants (individual fellowships)

Coordinator

FORSCHUNGSZENTRUM KARLSRUHE GMBH - TECHNIK UND UMWELT

• EU contribution: No data
• Address: Herrmann-von-Helmholtz-Platz 1 ; 76344 EGGENSTEIN-LEOPOLDSHAFEN ; Germany
• Total cost: No data