Sorption properties of nanostructured potassium aluminosilicate

被引:11
|
作者
Gordienko P.S. [1 ,2 ]
Yarusova S.B. [1 ,2 ]
Shabalin I.A. [1 ]
Zheleznov V.V. [1 ]
Zarubina N.V. [3 ]
Bulanova S.B. [1 ]
机构
[1] Institute of Chemistry, Far Eastern Branch, Russian Academy of Sciences, pr. 100-letiya Vladivostoka 159, Vladivostok
[2] Vladivostok State University of Economy and Service, ul. Gogolya 41, Vladivostok
[3] Institute of Geology, Far Eastern Branch, Russian Academy of Sciences, pr. 100-letiya Vladivostoka 159, Vladivostok
来源
Gordienko, P.S. | 1600年 / Pleiades Publishing卷 / 56期
关键词
Cesium sorption; Synthetic potassium aluminosilicate;
D O I
10.1134/S1066362214060058
中图分类号
学科分类号
摘要
The ability of synthetic nanostructured potassium aluminosilicate (PAS) KAlSi 3 O 8 ·1.5H 2 O with the specific surface area of 105 ± 5 m 2 g -1 to take up cesium ions was studied. The maximal sorption capacity of PAS in sorption of Cs + ions from cesium carbonate solutions containing no other salts is ∼3.7 mmol g -1 . In Cs + sorption from solutions containing no other salts, the sorption capacity is the lowest at pH 1; it increases with pH, reaching a maximum at pH 10.8. The effect of salt background (various concentrations and ratios of KCl and NaCl) on the sorption properties of PAS was examined. The sorption capacity decreases to the greatest extent (to 0.25 mmol g -1 ) in solutions containing the K + and Na + ions simultaneously at concentrations of 68 and 517 mM, respectively. The dependence of the cesium sorption on the concentration of nitrates (NaNO 3 , KNO 3 , NH 4 NO 3 ) and the kinetics of the cesium sorption from aqueous NaNO 3 solution were studied with the 137 Cs tracer. The highest distribution coefficients (up to 12000 mL g -1 ) are observed in 137 Cs sorption from NaNO 3 solutions. The degree of the 137 Cs sorption reaches a maximum (92 ± 4%) in sorption from 0.01 M NaNO 3 solutions at the sorption time of 4 h. © Pleiades Publishing, Inc., 2014. © P.S. Gordienko, S.B. Yarusova, I.A. Shabalin, V.V. Zheleznov, N.V. Zarubina, S.B. Bulanova.
引用
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页码:607 / 613
页数:6
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