Isotherm, thermodynamic and kinetic studies of Sr2+ adsorption on spherical TiO2/PAN composites

被引：5
|
作者：
Kasap, Sibel [1 ]
Tel, Huseyin [1 ]
Piskin, Sabriye [2 ]
机构：
[1] Ege Univ, Inst Nucl Sci, TR-35100 Izmir, Turkey
[2] Yildiz Tech Univ, Fac Chem & Met Engn, Istanbul, Turkey
来源：
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2011年 / 289卷 / 02期
关键词：
TiO2; Polyacrylonitrile (PAN); Kinetic models; ID model; Boyd equation; AQUEOUS-SOLUTIONS; SORPTION; REMOVAL; CADMIUM; CR(VI); IONS;
D O I：
10.1007/s10967-011-1131-x
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A spherical polyacrylonitrile-TiO2 composite adsorbent was prepared and its strontium removal potential was investigated. The Langmuir equation fixed well the equilibrium data. The value of a dagger HA degrees A = 8.943 kJ/mol and a dagger GA degrees A = 6.291 kJ/mol at 298 K indicate that the adsorption of strontium onto TiO2/PAN composite adsorbent is an endothermic and non-spontaneous reaction. The kinetic process was described by a pseudo-second-order rate model very well.
引用
收藏
页码：537 / 544
页数：8
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