Extraction of radioactive cesium using innovative functionalized porous materials

被引：167

作者：

Delchet, Carole ^{[1
,2
]}

Tokarev, Alexei ^{[2
]}

Dumail, Xavier ^{[2
]}

Toquer, Guillaume ^{[1
]}

Barre, Yves ^{[3
]}

Guari, Yannick ^{[2
]}

Guerin, Christian ^{[2
]}

Larionova, Joulia ^{[2
]}

Grandjean, Agnes ^{[1
]}

机构：

[1] UMR5257 CEA CNRS UM2 ENSCM, Inst Chim Separat Marcoule, F-30207 Bagnols Sur Ceze, France

[2] Univ Montpellier 2, Inst Charles Gerhardt Montpellier, UMR CNRS UM2 ENSCM UM1 5253, F-34095 Montpellier 5, France

[3] Decontaminat Ctr Marcoule, CEA DEN DTCD SPDE Lab Procedes Avances, Bagnols Sur Ceze, France

来源：

RSC ADVANCES | 2012年 / 2卷 / 13期

关键词：

POTASSIUM COBALT HEXACYANOFERRATE(II); COMPOSITE ION-EXCHANGER; MESOPOROUS SILICA; SELECTIVE REMOVAL; SORPTION MECHANISMS; ELECTRODE SURFACES; AQUEOUS-SOLUTIONS; FERROCYANIDES; ADSORPTION; WASTES;

D O I：

10.1039/c2ra00012a

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A new approach to an efficient and selective extraction of Cs+ ions from water, sea water enriched with Cs+ and a radioactive solution simulating the effluents of the Fukushima reactors (Cs-137, 29 kBq L-1) was developed by using porous silica- or glass-based nanocomposites containing Prussian blue type nanoparticles, Co2+/[Fe(CN)(6)](3-), with sizes below 10 nm. A particular emphasis is given on the kinetics of cesium sorption fitted by using the classical reaction order model as well as a diffusion model in order to better understand the sorption mechanism. Compared to the amount of Co2+/[Fe(CN)(6)](3-) nanoparticles, the sorption capacities of studied nanocomposites are more than three times higher than the ones observed for the respective bulk materials. These nanocomposites present a high selectivity to Cs+ and extract it in trace amounts.

引用

页码：5707 / 5716

页数：10

共 45 条

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