JRP 02-16

Partners

KU

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FZK

Contact

Dr. S. Stipp
University of Copenhagen - Geological Institute - NanoGeoScience - Øster Voldgade 10 - DK-1350 Copenhagen K - Denmark
Phone +45 (0) 35 32 24 80
Fax +45 (0) 33 14 83 22
E-mail e-mail

Neptunium interaction with green rust (Fe(II), Fe(III)-sulfate, hydroxide)

Status

 
Terminated - Planned from April 2005 till April 2006

Goals

The key objectives of this joint research project are:

  • to define the mechanism(s) controlling Np uptake by green rust (GR);
  • to characterise changes in particle morphology, structure and composition during Np(V) reduction to Np(IV);
  • to determine the implications of these changes on colloid behaviour.

In addition, a method and an experience base for the Ac-GR system will also be developed. They will be used to simplify the interpretation of the results from future investigations of:

  • other phases in the GR mineral family
  • U and Pu uptake.

Expected results

The results of this joint research project will contribute to the improvement of the database for the risk assessment of geological waste disposal.

Reports