Sorption behavior of Sr-85 onto manganese oxides with tunnel structure

Authors: Ivanets A.I., Prozorovich V.G., Kouznetsova T.F., Radkevich A.V., Krivoshapkin P.V., Krivoshapkina E.F., Sillanpää M.


Sorption behavior of strontium ions on manganese oxides obtained by sol–gel technique reduction of KMnO4 by different reagents (H2O2, MnCl2 and polyvinyl alcohol) was studied. Sorption capacity of the most effective sorbent reaches 200 mg g−1 and distribution coefficient Kd (85Sr)—3.67 × 105 cm3 g−1. Ion-exchange and chemisorption mechanism of strontium ions removal by manganese oxides were confirmed by means XRD, FT-IR, N2 adsorption–desorption and SEM–EDX methods. The obtained sorbents are  promising for liquid radioactive water treatment from strontium  radionuclides.


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