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Coated Magnetic Nanoparticles for Acidic Nuclear Waste Separation

Published online by Cambridge University Press:  01 February 2011

Maninder Kaur ,
Hongmei Han ,
Andrew Johnson ,
Jesof Kaczor ,
Andrzej Paszczynski  and
You Qiang
Maninder Kaur
Affiliation:
mani23physics@gmail.com, University of Idaho, Physics, Moscow, Idaho, United States
Hongmei Han
Affiliation:
hhan@vandals.uidaho.edu, University of Idaho, Physics, Moscow, Idaho, United States
Andrew Johnson
Affiliation:
andrewjohnson@vandals.uidaho.edu, University of Idaho, EBI, Moscow, Idaho, United States
Jesof Kaczor
Affiliation:
jkaczor@uidaho.edu, University of Idaho, EBI, Moscow, Idaho, United States
Andrzej Paszczynski
Affiliation:
Andrzej@uidaho.edu, University of Idaho, EBI, Moscow, Idaho, United States
You Qiang
Affiliation:
youqiang@uidaho.edu, University of Idaho, Physics, Moscow, Idaho, United States
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Abstract

Actinide specific chelator (che) conjugated with magnetic nanoparticles (MNPs) have been developed to separate nuclear waste in acidic conditions. Compared to the traditional nuclear waste treatments, such as solvent extraction and ion exchange, this method is a simple, compact and cost-effective process that generates minimum secondary waste. In this paper, we focus on the coating process of MNPs to achieve a combination of good acidic resistance, high chelator loading density and efficient magnetic separation. An optimized silica coating process before conjugates chelator directly onto MNPs significantly improves the acidic resistance of the MNP-che complex. Chelator loading density is significantly increased by attaching a linear polyamine polymer poly(allylamine hydrochloride) (PAH) to the surface of the MNPs using chemical and physical approaches.

Keywords

magneticnuclear materialswaste management
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1265: Symposium AA – Scientific Basis for Nuclear Waste Management XXXIV , 2010 , 1265-AA09-05
Copyright
Copyright © Materials Research Society 2010

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