JRP 05-13

Partners

FZK

KTH

UCY

Contact

Dr. Th. Schäfer
Forschungszentrum Karlsruhe-INE - P.O. Box 3640 - 76021 Karlsruhe Germany
E-mail e-mail

Reduction of actinides by inorganic or organic bound iron (II)

Status

 
Terminated - Planned from June 2006 till June 2008

Goals

The overall objective of this joint research project is to study actinide (U, Np) reduction capacities of host rock specific minerals and/or organic macromolecules, under near-natural conditions. Spectro-microscopically techniques (XPS, EXAFS) will be used together with autoradiography to differentiate between adsorbed, co-precipitated or reduced actinide species.

Expected results

The results of this joint research project will lead to a detailed process understanding of radionuclide redox state and sorption/reduction capacity/kinetics, as a function of solid phase chemistry (ferrous iron and/or reduced sulfur content). As redox processes and their kinetics play a key role for the prediction of radionuclide migration/retention, this project will contribute to the understanding of the basic processes of nuclear waste disposal.

Reports