Journal of Radioanalytical and Nuclear Chemistry
2018
2018
Investigation of Sr uptake by birnessite-type sorbents from seawater
Авторы:
Egorin, A. M., Sokolnitskaya, T. A., Azarova, Yu. A., Portnyagin, A.S., Balanov, M. I., Misko, D.S., Shelestyuk, E.A., Kalashnikova, A. M., Tokar, E.A., Tananaev, I.G., Avramenko, V. A.
Egorin, A. M., Sokolnitskaya, T. A., Azarova, Yu. A., Portnyagin, A.S., Balanov, M. I., Misko, D.S., Shelestyuk, E.A., Kalashnikova, A. M., Tokar, E.A., Tananaev, I.G., Avramenko, V. A.
Abstract Sorption of micro- and microamounts of Sr from seawater has been studied using granulated Na-birnessite. Distribution coefficients of 90Sr in the natural seawater are 0.8–1.2 9 103 ml g-1 , in the model seawater they are 1.6–1.8 9 103 ml g-1 . Application of Na-birnessite was shown to be prospective in sorption–desorption–regeneration regime. In dynamic sorption conditions, over 150 bed volumes of seawater can be purified till 5% breakthrough occurs at feed rate 10 BV h-1 . Na-birnessite can be used for 90Sr radionuclide removal from liquid radioactive wastes containing seawater.
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