SEPARATION OF TRITIUM AQUEOUS EFFLUENTS
This report describes the further development of the so-called ELEX process, carried out from 1 July 1980 until 31 December 1982. The ELEX process is the combination of electrolysis with the catalytic tritium exchange between hydrogen and water in order to accumulate the tritium in the liquid phase. The experimental study of the catalytic tritium exchange between hydrogen and liquid water was continued and the overall exchange rate could be substantially increased. An alternative process based on bithermal exchange of tritium has been evaluated. In the 10 mol/h mini-pilot bench scale detritiation unit the ELEX process was successfully demonstrated by detritiating up to now more than 1m**3 of water containing up to 100 MCi tritium per dm**3, which is the feed concentration to be expected for application of the process in a reprocessing plant. A 280 mol/h pilot detritiation installation now being constructed is described. This installation will realize a volume reduction factor of 100 and a process decontamination factor of 100. The maximum total tritium inventory will be about 1 000 Ci. The plant consists mainly of a 80 kW electrolyser and a 10 cm diameter exchange column and can be considered as the ultimate step before industrial application of the ELEX process.
Bibliographic Reference: EUR 9107 EN (1984) FS, 82 P., BFR 300, EUROFFICE, LUXEMBOURG, POB 1003
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Record Number: 1989122062000 / Last updated on: 1987-01-01
Available languages: en