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Project 1 NW SPTC Socium – Working Group: R&D on titanate-silica sorbents for LNW immobilization in Gremikha, Murmansk Region, 2013-2015

In 2013-2015 NW SPTC Socium Working Group carried out a number of R&D works in Gremikha department of Northwest Center SevRao.

NW SPTC Socium Working Group report was approved by RosRao Scientific and Technical Council (STC RosRao proceedings from 29.05.2014) and by ROSATOM (ROSATOM letter from 16.06.2014).

NW SPTC Socium Working Group and experts from Gremikha department of Northwest Center SevRao carried out the final stage of R&D on the basis of procedure developed by RAS Kola Science Centre on a bigger volume of LNW (from 1 litre and more) with the use of LHT-9 adsorbent and final production of titanate-silica ceramics.

The experiments on reprocessing non-scheduled ultra-acid waste doped with europium were carried out on worked out fuel discharged from liquid metal cooled reactor on nuclear submarine #910, project 705. The experiments were made with the use of LHT-9 and proved its high efficiency in reprocessing europium doped LNW (40-100 gr of LHT-9 per 1 litre of LNW). The sorbent can be used in the form of water suspension, which is mixed with LNW without any preliminary treatment (dilution, neutralization, etc.).