29 October 2017 to 3 November 2017
Australia/Sydney timezone

New route for synthesis of Synroc-like ceramic using non-selective sorbent LHT-9

1 Nov 2017, 17:00
Oral Presentation National and international collaborative waste management programs Ceramic and Glass-Ceramic Wasteforms


Ms Bella Zubekhina (researcher, V.G. Khlopin Radium Institute (KRI), St-Petersburg, Russia)


Immobilization of bulk liquid high level waste (HLW) in Synroc ceramic is well-known reliable way for final isolation of waste from biosphere. It is proposed the alternative method of synthesis of titanate Synroc-like ceramic. Radionuclide incorporation into crystalline titanate host-phases can be provided as a result of direct radionuclide sorption from liquid HLW using non-selective sorbent – layered hydrazinium titanate (LHT-9). Such an approach allows excluding expensive multi-stage procedure of precursor preparation. The precipitate obtained after sorption can be easily transformed into Synroc-like ceramic by cold pressing and sintering in air at 1000-1100°. The highly radioactive samples of titanate ceramic loaded with 10 wt.% of real HLW were synthesized and studied at KRI hot-cell facility. Chemical durability of these samples was tested using MCC-1 static leach test (in distilled water at 90°C) and the leach rate was found to be comparable with Synroc ceramic.

Primary author

Ms Bella Zubekhina (researcher, V.G. Khlopin Radium Institute (KRI), St-Petersburg, Russia)


Dr Boris Burakov (V.G. Khlopin Radium Institute (KRI), St-Petersburg, Russia) Dr Sergey Britvin (Saint-Petersburg State University, St-Petersburg, Russia) Mr Valery Mararitsa (Socium Ltd, St-Petersburg, Russia) Mr Yuri Demidov (Socium Ltd, St-Petersburg, Russia)

Presentation Materials

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