Adsorption of Strontium from Acidic Waste Solution by Mn-Zr Mixed Hydrous Oxide Prepared by Co-Precipitation

被引：44
作者：
Inan, Sueleyman [1 ]
Altas, Yueksel [1 ]
机构：
[1] Ege Univ, Inst Nucl Sci, TR-35100 Bornova, Turkey
来源：
SEPARATION SCIENCE AND TECHNOLOGY | 2010年 / 45卷 / 02期
关键词：
acidic solutions; co-precipitation; MnO(x)-ZrO(2); sorption; strontium; EXTRACTION CHROMATOGRAPHIC RESIN; MANGANESE OXIDE; RADIOACTIVE-WASTE; ZIRCONIUM-OXIDE; METAL-IONS; SORPTION; REMOVAL; DIOXIDE; COMPOSITE; CESIUM;
D O I：
10.1080/01496390903409666
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A manganese-zirconium mixed hydrous oxide with Mn to Zr mole ratio of 1:1 was prepared to study the sorption behavior and the removal of strontium from acidic radioactive waste solutions. Mixed hydrous oxide was identified and characterized by DTA/TGA, XRD, and surface analysis. The parameters affecting strontium adsorption, such as initial pH, contact time, initial metal ion concentration, temperature, adsorbent dose, and selectivity towards competing ions were investigated. Sorption data have been interpreted in terms of Freundlich and Langmuir equations. Thermodynamic parameters such as standard enthalpy (Delta H degrees), entropy (Delta S degrees), and free energy (Delta G degrees) were calculated from the slope and intercept of the plots of ln K(D) versus 1/T. The results indicated that the sorption of strontium onto manganese-zirconium mixed oxide is endothermic and spontaneous in nature.
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页码：269 / 276
页数：8
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