Publikationsdatum:
2018-03-09
Beschreibung:
The effect exerted by surface modification of natural aluminosilicates, glauconite and clinoptilolite, with ferrocyanides on the parameters of selective 137 Cs sorption was studied. The modification leads to an increase in the specific sorption and in the radiocesium interception potential in the presence of potassium, RIP(K). RIP(K) of the modified sorbents NPF-Gl and NPF-Cl was 6.1 × 10 5 and 5.0 × 10 6 mmol kg –1 , and the specific sorption capacity, 138 ± 14 and 136 ± 12 mg g –1 , respectively. The regular trends in variation of the 137 Cs distribution coefficients in sorption onto the natural and modified sorbents at K + and Са 2+ concentrations ranging from 10 –4 to 2.0 M were found. The modified sorbents exhibit high specificity to 137 Cs in a wide range of Ca and K concentrations in the solutions.
Print ISSN:
1066-3622
Digitale ISSN:
1608-3288
Thema:
Chemie und Pharmazie
