Ion-exchangers in radioactive waste management - Part XIV: Removal behavior of hydrous titanium oxide and sodium titanate for Cs(I)

被引：35

作者：

Mishra, SP ^{[1
]}

Dubey, SS ^{[1
]}

Tiwari, D ^{[1
]}

机构：

[1] Banaras Hindu Univ, Fac Sci, Dept Chem, Nucl & Radiochem Lab, Varanasi 221005, Uttar Pradesh, India

来源：

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2004年 / 261卷 / 02期

关键词：

D O I：

10.1023/B:JRNC.0000034885.26277.bd

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The removal behavior of hydrous titanium oxide and sodium titanate for Cs(I) from aqueous solutions by radiotracers was studied. Batch experiments revealed that an increase in Cs concentration (10(-8) to 10(-2) mol.dm(-3)), temperature (298 to 328 K) and pH (2.50 to 10.20) apparently enhanced the uptake of Cs(I) on hydrous titanium oxide whereas a high degree of uptake of Cs(I) on sodium titanate was almost unaffected by a change in adsorption temperature (298 to 328 K) and pH (2.50 to 10.20). Both systems follow Freundlich adsorption isotherm. Uptake of Cs(I) on hydrous titanium oxide obeys first order rate law. According to thermodynamic data the uptake is endothermic and apparently 'irreversible' in nature.

引用

页码：457 / 463

页数：7

共 28 条

[1]

*ASTM, 1978, 311329 ASTM JCPDS IC

[2] ROLE OF HYDROUS TITANIUM-OXIDE ON THE UPTAKE OF SEVERAL TRACER CATIONS, AND SEPARATION OF CARRIER-FREE TE-125M FROM SB-125 AND I-132 FROM TE-132 [J].