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[en] Sorption on bentonite from different Slovak deposits / Jelsovy potok, Kopernica and Lieskove has been investigated under various experimental conditions, such as contact time, pH, sorbate concentrations, presence of complementary cation. The sorption of strontium from aqueous solutions was investigated using a radiometric determination of distribution coefficient, Kd. The individual solutions were labelled with radiotracer. Radiation stability has been investigated, the higher sorption parameters were observed for the irradiated bentonites /tab.l/ , which can be explained by the increase of specific surface and change of solubility of the irradiated samples of bentonite. The presence of complementary cations, Na+, K+, NH4+, Ca2+, Mg2+ and Ba2+ depresses the sorption of Sr on bentonite. In the case of bentonite Kopernica the effectiveness in reducing the sorption of strontium by cations followed the order K+ < NH4+ < Na+ < Mg2+ < Ca2+ < Ba2+. Results indicate that the sorption of Sr+ on bentonite will be affected by the presence of high concentrations of various salts in the waste water effluents. (author)
Source
Society of Nuclear Medicine and Radiation Hygiene of Slovak Medical Associaton, Bratislava (Slovakia); Slovak Medical University, Bratislava (Slovakia); Slovak Enterprise Joint Stock Company Bohunice NPP, Jaslovske Bohunice (Slovakia); Regional Public Health Authority, Banska Bystrica (Slovakia); Research Institute of NPP, Trnava (Slovakia); 271 p; ISBN 80-88806-53-4; 
; Nov 2005; p. 119-120; 27. DRP: Days of Radiation Protection 2005; Liptovsky Jan (Slovakia); 28 Nov - 2 Dec 2005; 1 tab., 4 refs.; E-mail: kufcakova@fns.uniba.sk
; Nov 2005; p. 119-120; 27. DRP: Days of Radiation Protection 2005; Liptovsky Jan (Slovakia); 28 Nov - 2 Dec 2005; 1 tab., 4 refs.; E-mail: kufcakova@fns.uniba.sk