Selective separation of actinides and long-lived fission products from 1AW MTR liquid waste : Pilot plant tests - Part II
In Italy there are some 120 m3 of high level liquid waste (HLLW) coming from MTR, CANDU and Elk River fuel elements reprocessing. This HLLW contains a large amount of chemicals and inert salts (e.g. Al, Hg, Fe, HNO(3)) together with Cs, Sr and TRU elements. The possibility of separating radioactive isotopes from inert ones has been studied. TRU elements and Sr were separated by means of a selective precipitation, while Cs was adsorbed on synthetic zeolite (AZE process) or precipitated with NaTPB (ATE process). The decontamination factors for Sr, Pu and Cs were respectively 100, 5000 and 1000. This selective separation allows the sophisticated and costly pot vitrification process to be used only for the small volume of HLW, while the larger volume of MLW is conditioned by the simpler process of cementation. This part of the final report deals with the cold experiments carried out in the SERSE pilot plant.
Bibliographic Reference: EUR 13644 EN (1992) 62 pp., FS, ECU 6.25
ISBN: ISBN 92-826-3358-6
Record Number: 199210113 / Last updated on: 1994-12-02
Original language: en
Available languages: en