Batch and continuous fixed-bed column adsorption of Cs+ and Sr2+ onto montmorillonite-iron oxide composite: Comparative and competitive study

被引：48

作者：

Ararem, Abderrahmane ^{[1
,2
]}

Bouras, Omar ^{[2
]}

Bouzidi, Abdelkader ^{[1
]}

机构：

[1] Nucl Res Ctr Birine, Ain Oussera 17200, Algeria

[2] Univ Saad Dahlab, Blida 09000, Algeria

来源：

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

关键词：

Adsorption; Caesium and strontium; Montmorillonite; Iron oxide; Fixed bed columns; REMOVAL; STRONTIUM; CESIUM; COBALT; IONS;

D O I：

10.1007/s10967-013-2433-y

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A montmorillonite-iron oxide composite (MIOC) was prepared to assess its effectiveness in the removal of Cs+ and Sr2+ from aqueous solution. A comparative and competitive adsorption study was conducted in single and binary systems. Used materials have been characterized by X-ray diffraction (XRD) and Infrared spectroscopy. Adsorption of Cs+ and Sr2+ as a function of contact time and pH was investigated, adsorption data of single metal solutions were well fitted to the Freundlich-Langmuir isotherm models. Equilibrium isotherms for the binary removal of Cs+ and Sr2+ by MIOC have been analyzed by using non modified and extended Langmuir models with a satisfactory R (2) values. Neutral solution pH was found to be favorable for both single and binary systems. The adsorption model analysis revealed that MIOC was more selective for Sr than Cs. The maximum adsorption capacities for individual Cs+ and Sr2+ solutions were 52.6 and 55.5 mg g(-1), respectively. While the maximum uptakes in the binary system were 41.6 and 47.6 mg g(-1) for Cs+ and Sr2+, respectively. Column adsorption experiments were carried out at room temperature under the effect of various operating parameters such as bed depth, initial cation concentration and flow rate, Breakthrough curves were well fitted to the Thomas model. Desorption experiments were also conducted to assess the possibility for the reuse of adsorbent and the recovery of cations.

引用

页码：537 / 545

页数：9

共 20 条

[1] Adsorption of caesium from aqueous solution on binary mixture of iron pillared layered montmorillonite and goethite [J].

Ararem, Abderrahmane ;

Bouras, Omar ;

Arbaoui, Fand .

CHEMICAL ENGINEERING JOURNAL, 2011, 172 (01) :230-236

[2] Adsorption behavior of strontium on binary mineral mixtures of Montmorillonite and Kaolinite [J].

Bascetin, Elvan ;

Atun, Gulten .

APPLIED RADIATION AND ISOTOPES, 2006, 64 (08) :957-964

[3]

Bibudhendra S, 2002, HEAVY METALS ENV

[4] Biosorption of cesium-137 and strontium-90 by mucilaginous seeds of Ocimum basilicum [J].

Chakraborty, Dipjyoti ;

Maji, Samir ;

Bandyopadhyay, Abhijit ;

Basu, Sukalyan .

BIORESOURCE TECHNOLOGY, 2007, 98 (15) :2949-2952

[5] Copper(II) and lead(II) removal from aqueous solution in fixed-bed columns by manganese oxide coated zeolite [J].

Han, Runping ;

Zou, Weihua ;

Li, Hongkui ;

Li, Yanhu ;

Shi, Jie .

JOURNAL OF HAZARDOUS MATERIALS, 2006, 137 (02) :934-942

[6] Characterization and properties of iron oxide-coated zeolite as adsorbent for removal of copper(II) from solution in fixed bed column [J].

Han, Runping ;

Zou, Lina ;

Zhao, Xin ;

Xu, Yanfang ;

Xu, Feng ;

Li, Yinli ;

Wang, Yu .

CHEMICAL ENGINEERING JOURNAL, 2009, 149 (1-3) :123-131

[7]

INGLEZAKIS VJ, 2007, ADSORPTION ION EXCHA

[8] Optimised correlations for the fixed-bed adsorption of metal ions on bone char [J].

Ko, DCK ;

Porter, JF ;

McKay, G .

CHEMICAL ENGINEERING SCIENCE, 2000, 55 (23) :5819-5829

[9] As(III) removal from aqueous medium in fixed bed using iron oxide-coated cement (IOCC): Experimental and modeling studies [J].

Kundu, Sanghamitra ;

Gupta, A. K. .

CHEMICAL ENGINEERING JOURNAL, 2007, 129 (1-3) :123-131

[10]

Mao-Xu Z, 2010, J HAZARD MATER, V181, P57

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