Adsorption Behavior of Sr(II) from High-level Liquid Waste using Crown Ether with Ionic Liquid Impregnated Silica Adsorbent

被引：8

作者：

Kudo, Tatsuya ^{[1
,2
]}

Ito, Tatsuya ^{[1
]}

Kim, Seong-Yun ^{[1
]}

机构：

[1] Tohoku Univ, Grad Sch Engn, Dept Quantum Sci & Energy Engn, Aoba Ku, 6-6-01-2 Aza Aoba Aramaki, Sendai, Miyagi 9808579, Japan

[2] Japan Nucl Fuel Ltd, 4-108 Aza Okitsuke, Kamikita, Aomori 0393212, Japan

来源：

SPECIAL ISSUE OF FOR THE FIFTH INTERNATIONAL SYMPOSIUM ON INNOVATIVE NUCLEAR ENERGY SYSTEMS | 2017年 / 131卷

关键词：

Strontium; High-level Liquid Water; Impregnated Silica Adsorbent; Adsorption; Ionic Liquid; SEPARATION; DIGLYCOLAMIDE; STABILITY; CESIUM;

D O I：

10.1016/j.egypro.2017.09.426

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

4'4'(5')-di(tert-butylcyclohexano)-18-crown-6 (DtBuCH18C6) modified with 1-ethyl-3-methylimidazolium bis (trifluoro methylsulfonyl) imide ([C(2)mim][NTf2]) was loaded onto porous silica/polymer composite support (Si02-P) particles with a mean diameter of 50 mu m and used to extract Sr(II) from HNO3 solutions. The effect of HNO3 concentration on the equilibrium kinetics and thermodynamic properties of Sr(II) uptake were investigated by batch methods. The adsorbent exhibited excellent adsorption selectively for Sr(II) over a wide range of HNO3 concentrations. The adsorption of Sr(II) in the presence of 3 M HNO3 on (DtBuCH18C6+[C(2)mim][NTf2])/SiO2-P attained equilibrium within 1 h, and a relatively large distribution coefficient (K-d) of ca. 30 cm(3).g(-1) was obtained. Kinetic data were successfully modeled using pseudo-second-order kinetics. The adsorption of Sr(II) was a spontaneous and exothermic process. The uptake isotherm of Sr(II) for (DtBuCH18C6 [C(2)mim][NTf2])/SiO2-P followed a Langmuir-type adsorption equation. (C) 2017 The Authors. Published by Elsevier Ltd.

引用

页码：189 / 194

页数：6

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