ADSORPTION STUDIES OF CERIUM ON LEAD DIOXIDE FROM AQUEOUS-SOLUTIONS

被引：15

作者：

AFZAL, M ^{[1
]}

HASANY, SM ^{[1
]}

AHMAD, H ^{[1
]}

MAHMOOD, F ^{[1
]}

机构：

[1] PINSTECH,DIV NUCL CHEM,ISLAMABAD,PAKISTAN

来源：

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY-ARTICLES | 1993年 / 170卷 / 02期

关键词：

D O I：

10.1007/BF02041466

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The adsorption of cerium from aqueous solutions on lead dioxide has been investigated and optimized as a function of pH, equilibration time, sorbate and sorbent concentrations. The effect of other anions and cations on its adsorption has also been studied. Citrate, EDTA, tartrate, oxalate, U(VI), Th(IV), Pb(II), Cr(III) and Al(III) drastically reduce the adsorption. Adsorption of other metal ions on the same oxide has been measured under identical conditions. The distribution coefficient indicates that cerium can be separated from Fe(III), Tc(VII), In(III), Ag(I), Hg(II) and Ta(V). The data fitted very well to Freundlich as well as Dubinin-Raduskevich (D-R) isotherms. A mean free energy of sorption 11.62 +/- 0.2 kJ . mol-1 was calculated, using the D-R equation and corresponds to an ion exchange reaction.

引用

页码：309 / 319

页数：11

共 47 条

[1]

AFZAL M, COMMUNICATION

[2] RADIOCHEMICAL STUDY OF ADSORPTION BEHAVIOR OF INORGANIC IONS ON ZIRCONIUM PHOSPHATE SILICA GEL AND CHARCOAL [J].