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

被引：25
|
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
收藏
页码：931 / 940
页数：10
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