A TBP/BTBP-based GANEX Separation ProcessPart 2: Ageing, Hydrolytic, and Radiolytic Stability
Artikel i vetenskaplig tidskrift, 2011

The waste from nuclear power plants worldwide has to be isolated from man and his environment for about 100,000 years to equal the levels of natural uranium. If, however, the long-lived actinides could be separated from the spent fuel and transmuted, then the isolation time could be shortened to about 1,000 years. This does, however, require the selective separation of the actinides from the rest of the waste. Several processes exist for such a separation, of which one is the Group ActiNide Extraction (GANEX) process. A novel GANEX process has been developed at the Chalmers University of Technology utilizing the properties of already well known extractants by combining BTBP and TBP into one solvent. The stability provided by this GANEX solvent towards ageing, hydrolysis, and radiolysis has been investigated. The results show that the actinide distribution ratios are maintained after a long duration of contact with strong nitric acid. The solvent has also been found to be stable towards radiolysis up to 200 kGy in contact with 4 M nitric acid.

BTBP

TBP

hydrolysis

stability

radiolysis

GANEX

Författare

Emma Aneheim

Chalmers, Kemi- och bioteknik, Kärnkemi

Christian Ekberg

Chalmers, Kemi- och bioteknik, Kärnkemi

Anna Fermvik

Chalmers, Kemi- och bioteknik, Kärnkemi

Mark Foreman

Chalmers, Kemi- och bioteknik, Kärnkemi

B. Gruner

Institute of Inorganic Chemistry of the Academy of Sciences of the Czech Republic, v.v.i.

Z. Hajkova

Institute of Inorganic Chemistry of the Academy of Sciences of the Czech Republic, v.v.i.

M. Kvicalova

Institute of Inorganic Chemistry of the Academy of Sciences of the Czech Republic, v.v.i.

Solvent Extraction and Ion Exchange

0736-6299 (ISSN) 1532-2262 (eISSN)

Vol. 29 157-175

Drivkrafter

Hållbar utveckling

Styrkeområden

Energi

Ämneskategorier

Kemi

DOI

10.1080/07366299.2011.539462