Mechanistic study of trivalent europium transport through supported liquid membranes (SLMs) and a novel immobilized phase solvent extraction (IPSE) system

被引：14
作者：
Boerrigter, H
Tomasberger, T
Booij, AS
Verboom, W
Reinhoudt, DN
de Jong, F
机构：
[1] Univ Twente, Lab Supramol Chem & Technol, MESA & Res Inst, NL-7500 AE Enschede, Netherlands
[2] Nucl Res & Consultancy Grp, NRG, NL-1755 ZG Petten, Netherlands
[3] Netherlands Energy Res Fdn, ECN, Petten, Netherlands
来源：
JOURNAL OF MEMBRANE SCIENCE | 2000年 / 165卷 / 02期
关键词：
extraction of cations; cavitand-based carriers; diffusion processes; nuclear waste separations;
D O I：
10.1016/S0376-7388(99)00237-9
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
The extraction of Eu(III) from medium acidic nitrate solutions with supported liquid membranes (SLMs) was studied with the cavitand-based Carriers 1-3. The experimental time-dependent Eu(III) concentrations were on-line monitored with a radiotracer, the concentration profiles can be described with a non-steady state model. The membrane diffusion coefficients D-m were directly determined from the experimental data. Evaluation of the rate-limiting step showed that aqueous diffusion plays a significant role and that the SLM and the solvent extraction (SX) models are in good agreement. The new immobilized phase solvent extraction (IPSE) system is based on the SLM principle and is a versatile technique for (semi-)continuous extraction of cations. (C)2000 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：273 / 291
页数：19
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