Selective removal of cesium ions from wastewater using copper hexacyanoferrate nanofilms in an electrochemical system

被引：111

作者：

Chen, Rongzhi ^{[1
]}

Tanaka, Hisashi ^{[1
]}

Kawamoto, Tohru ^{[1
]}

Asai, Miyuki ^{[1
]}

Fukushima, Chikako ^{[1
]}

Na, Haitao ^{[1
]}

Kurihara, Masato ^{[1
,2
]}

Watanabe, Masayuki ^{[3
]}

Arisaka, Makoto ^{[3
]}

Nankawa, Takuya ^{[3
]}

机构：

[1] Natl Inst Adv Ind Sci & Technol, Nanosyst Res Inst, Tsukuba, Ibaraki 3058565, Japan

[2] Yamagata Univ, Fac Sci, Dept Mat & Biol Chem, Yamagata 9908560, Japan

[3] Japan Atom Energy Agcy, Nucl Sci & Engn Directorate, Tokai, Ibaraki 3191195, Japan

来源：

ELECTROCHIMICA ACTA | 2013年 / 87卷

关键词：

Electrochemical adsorption; Radioactive cesium; Copper hexacyanoferrate; Nanoparticles film; Selective removal; AQUEOUS-SOLUTIONS; BASIC DYE; ADSORPTION; SORPTION; BATCH;

D O I：

10.1016/j.electacta.2012.08.124

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A novel electrochemical adsorption system using a nanoparticle film of copper (II) hexacyanoferrate (III) was proposed for selectively removing cesium from wastewater. This system can be used for cesium separation without extra chemical reagents or any filtration treatment. Cesium uptake and elution can be simply controlled by switching the applied potentials between anodes and cathodes. Data from batch kinetic studies well fitted the intraparticle diffusion equation, reflecting a two-step process: a steepest ascent portion followed by a plateau extending to the equilibrium. The effective cesium removal with a high distribution coefficient (K-d > 5 x 10(5) mL/g) can be adopted in a large pH range from 0.3 to 9.2, and in the presence of several diverse coexisting alkaline cations, suggesting it can be taken as a promising technology for actual nuclear wastewater treatment. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：119 / 125

页数：7

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