Cerium uptake by zeolite A synthesized from natural clinoptilolite tuffs

被引：16

作者：

Faghihian, H ^{[1
]}

Amini, MK ^{[1
]}

Nezamzadeh, AR ^{[1
]}

机构：

[1] Univ Isfahan, Dept Chem, Esfahan, Iran

来源：

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2005年 / 264卷 / 03期

关键词：

D O I：

10.1007/s10967-005-0756-z

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Natural clinoptilolite tuffs from the Semnan region in Iran was used for the synthesis of zeolite A. The tuffs and synthesized zeolites were characterized by XRD and XRF. The sorption behavior of the synthesized zeolite toward cerium was studied. Using the Lagergren's equation, the absorption constant was calculated. The measured distribution coefficient values (K-d) indicated that cerium uptake is higher in lower initial concentrations, higher temperature and higher pH values. Thermodynamic parameters of the exchange were calculated through construction of ion-exchange isotherms at three temperatures of 298, 323 and 343 K. The dynamic absorption of cerium was also studied by passing the solution through a column in the presence and absence of sodium ions.

引用

页码：577 / 582

页数：6

共 19 条

[11] Sorption of caesium and strontium on clinoptilolite- and mordenite-containing sedimentary rocks [J].