Separation nanotechnology of diethylenetriaminepentaacetic acid bonded magnetic nanoparticles for spent nuclear fuel

被引：26

作者：

Kaur, Maninder ^{[1
,2
]}

Johnson, Andrew ^{[3
]}

Tian, Guoxin ^{[4
]}

Jiang, Weilin ^{[5
]}

Rao, Linfeng ^{[4
]}

Paszczynski, Andrzej ^{[3
]}

Qiang, You ^{[1
,2
,6
]}

机构：

[1] Univ Idaho, Dept Phys, Moscow, ID 83844 USA

[2] Univ Idaho, Environm Sci Program, Moscow, ID 83844 USA

[3] Univ Idaho, Sch Food Sci, Moscow, ID 83844 USA

[4] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA

[5] Pacific NW Natl Lab, Richland, WA 99352 USA

[6] Ctr Adv Energy Studies, Idaho Falls, ID 83401 USA

来源：

NANO ENERGY | 2013年 / 2卷 / 01期

关键词：

Magnetic nanoparticles; Functionalization; Actinides; Sorption; Magnetic separation; Hydrodynamic size; FISSION-PRODUCT; EXTRACTANTS; SILICA;

D O I：

10.1016/j.nanoen.2012.08.005

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A nanomagnetic separation method based on diethylenetriaminepentaacetic acid (DTPA) conjugated with magnetic nanoparticles (MNPs) is studied for application in spent nuclear fuel separation. The high affinity of DTPA towards actinides aids in separation from the highly acidic medium of nuclear waste. The solubility and magnetization of particles at tow pH is protected by encapsulating them in silica. Surface functionalization of silica coated particles with polyamines enhances the loading capacity of the chelator on MNPs. The particles were characterized before and after surface modification using different characterizing tools. The uptake behavior of Am(III), Pu(IV), U(VI), and Np(V) from 0.1 M NaNO3 solution was determined. The sorption results show the strong affinity of DTPA towards Am(III) and Pu(IV) by extracting 97% and 80% of actinides, respectively. The high removal efficiency of actinides make the chelator conjugated MNPs an effective method for spent nuclear fuel separation. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：124 / 132

页数：9

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