Preparation of silica-based titanate adsorbents and application for strontium removal from radioactive contaminated wastewater

被引：28

作者：

Chen, Z. ^{[1
]}

Wu, Y. ^{[1
]}

Wei, Y. ^{[1
]}

Mimura, H. ^{[2
]}

机构：

[1] Shanghai Jiao Tong Univ, Sch Nucl Sci & Engn, Shanghai 200240, Peoples R China

[2] Tohoku Univ, Dept Quantum Sci & Energy Engn, Grad Sch Engn, Sendai, Miyagi 9808579, Japan

来源：

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2016年 / 307卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Potassium hexatitanate; Decontamination; Strontium; Silica-based support; ION-EXCHANGE; POTASSIUM HEXATITANATE; ADSORPTION; EXTRACTION; EQUILIBRIUM; SEPARATION; BEHAVIOR; SOLVENT; CESIUM; SR;

D O I：

10.1007/s10967-015-4470-1

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

K2Ti6O13/SiO2 adsorbents were prepared by sol-gel method and good microcrystalline K2Ti6O13 phases were formed at 500 degrees C. From EDS of the adsorbents before and after adsorption of Sr2+ it showed that there was ion-exchange reaction between K+ and Sr2+. Experimental data on adsorption isotherms were best fit by the Freundlich and Langmuir-Freundlich model. The experimental data indicated that the pseudo-second order kinetic equation was best fit for both single Sr2+ solution and simulated Fukushima wastewater. The pH approaching to neutral displayed a better adsorption behavior for Sr2+ solution. The breakthrough capacity for treatment of Fukushima wastewater increased with decreasing flow rate and increasing bed diameter.

引用

页码：931 / 940

页数：10

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