Adsorption of U(VI) onto kaolin studied by batch method

被引：8

作者：

Zhang, Hongxia ^{[1
]}

Liu, Zhi ^{[1
]}

Hu, Peizhuo ^{[1
]}

Liu, Tonghuan ^{[1
]}

Wu, Wangsuo ^{[1
]}

机构：

[1] Lanzhou Univ, Sch Nucl Sci & Technol, Radiochem Lab, Lanzhou 730000, Gansu, Peoples R China

来源：

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2013年 / 298卷 / 01期

关键词：

Adsorption; U(VI); Kaolin; Kinetic; Isotherms; Thermodynamic; AQUEOUS-SOLUTION; SPECTROSCOPY METHODS; IONIC-STRENGTH; FULVIC-ACID; HUMIC-ACID; URANIUM VI; SORPTION; REMOVAL; GOETHITE; SURFACES;

D O I：

10.1007/s10967-013-2573-0

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Adsorption of U(VI) on purified kaolin was studied by batch methods under ambient conditions, including contact time, pH, fulvic acid, etc. Three kinetic models were used to model the kinetic adsorption which was very well described by the pseudo-second-order rate equation, and the activation energy of adsorption was 52.20 kJ/mol. The Freundlich and Dubinin-Radushkevich models fitted the experimental data better than the Langmuir model for the adsorption and desorption isotherms. The thermodynamic parameters indicated that the adsorption of U(VI) on kaolin was an endothermic and spontaneous process.

引用

页码：611 / 619

页数：9

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