Synthesis and sorption characteristics of tungsten oxides-based materials for Sr-90 removal from water media

被引：6

作者：

Egorin, A. M. ^{[1
]}

Dran'kov, A. N. ^{[1
,2
]}

Didenko, N. V. ^{[1
]}

Tokar', E. A. ^{[1
,2
]}

Sokol'nitskaya, T. A. ^{[1
,2
]}

Papynov, E. K. ^{[1
]}

Tananaev, I. G. ^{[2
]}

机构：

[1] Russian Acad Sci, Far Eastern Branch, Inst Chem, Pr 1000,Letiya Vladivostoka 159, Vladivostok 690022, Russia

[2] Far Eastern Fed Univ, Ul Sukhanova 8, Vladivostok 690920, Russia

来源：

JOURNAL OF MATERIALS SCIENCE | 2020年 / 55卷 / 22期

关键词：

WASTE FORM CERAMICS; ION-EXCHANGE; STRONTIUM; RADIONUCLIDES; ADSORPTION; SR2+; PYROCHLORE; BEHAVIOR; CESIUM; CS+;

D O I：

10.1007/s10853-020-04683-7

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Here, we suggest a facile and technologically available approach to synthesis of tungsten oxide-based materials implementing a liquid phase reductive precipitation followed by thermal dehydration of the obtained materials. Structure of the investigated sorbents refers to the type of tungsten bronze. Effects of annealing temperature on such properties as chemical and hydromechanical stability along with selective characteristics with respect to Sr-90 have been studied. Sorption investigations in static and dynamic regimes were done on micro- and macro-concentrations of strontium within 2-12 pH range in water solutions. Material's selectivity to strontium has been assessed in the presence of such competing ions as Na+, K+, NH4+ and Ca2+. Respective constant values for Freundlich, Langmuir, and Langmuir-Freundlich equations have been evaluated for prepared samples. Full dynamic exchange capacity has been determined in dynamic sorption conditions.

引用

页码：9374 / 9384

页数：11

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