Manganese Oxide-Based Sorbent for Sr-90 Radionuclide Removal from Seawater

International Conference on Mechanical Engineering and Applied Composite Materials

机械制造;材料科学

Papynov, E.K.^1,2 ; Egorin, A.M.^1,2 ; Sokolnitskaya, T.A.^1,2 ; Marinin, D.V.^1 ; Azarova, Y.A.^1 ; Portnyagin, A.S.^1,2 ; Balanov, M.I.^1,2 ; Misko, D.S.^2 ; Shelestiuk, E.A.^2 ; Kalashnikova, A.M.^2 ; Tokar, E.A.^1,2 ; Tananaev, I.G.^1,2 ; Avramenko, V.A.^1,2

Institute of Chemistry, Far Eastern Branch of Russian Academy of Sciences, Prospect 100-let Vladivostoku 159, Vladivostok

690022, Russia^1

Far Eastern Federal University, Suhanova street 8, Vladivostok

690920, Russia^2

关键词: Bed volume;    Distribution coefficient;    Material-based;    Radionuclide removal;    Sorption properties;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/307/1/012030/pdf
DOI  :  10.1088/1757-899X/307/1/012030

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The morphology, specific surface area, and sorption properties toward Sr-90 radionuclides in seawater of a sorption material based on manganese oxide have been investigated. The material was fabricated through interaction of KMnO4and H2O2with subsequent annealing at 500 °C. The sorbent is characterized with the mechanical strength sufficient for using under dynamic sorption conditions: here, the efficiency of Sr-90 removal at feeding of 150 bed volumes exceeds 95 %. The values of Sr-90 distribution coefficients are equal to 0.8-1.2×103ml/g in the real seawater and to 1.6-1.8 ×103ml/g in the simulated one.