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Title: Magnetic Separation Dynamics of Colloidal Magnetic Nanoparticles

Abstract

Surface functionalized magnetic nanoparticles (MNPs) are appealing candidates for analytical separation of heavy metal ions from waste water and separation of actinides from spent nuclear fuel. This work studies the separation dynamics and investigates the appropriate magnetic-field gradients. A dynamic study of colloidal MNPs was performed for steady-state flow. Measurements were conducted to record the separation time of particles as a function of magnetic field gradient. The drag and magnetic forces play a significant role on the separation time. A drop in saturation magnetization and variation of particle size occurs after surface functionalization of the MNPs; these are the primary factors that affect the separation time and velocity of the MNPs. The experimental results are correlated to a theoretical one-dimensional model.

Authors:
; ;
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Environmental Molecular Sciences Lab. (EMSL)
Sponsoring Org.:
USDOE
OSTI Identifier:
1233799
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Journal Name:
IEEE Magnetics Letters
Additional Journal Information:
Journal Volume: 4; Journal Issue: 2013; Journal ID: ISSN 1949-307X
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; Environmental Molecular Sciences Laboratory

Citation Formats

Kaur, M., Huijin Zhang,, and You Qiang,. Magnetic Separation Dynamics of Colloidal Magnetic Nanoparticles. United States: N. p., 2013. Web. doi:10.1109/LMAG.2013.2271744.
Kaur, M., Huijin Zhang,, & You Qiang,. Magnetic Separation Dynamics of Colloidal Magnetic Nanoparticles. United States. https://doi.org/10.1109/LMAG.2013.2271744
Kaur, M., Huijin Zhang,, and You Qiang,. 2013. "Magnetic Separation Dynamics of Colloidal Magnetic Nanoparticles". United States. https://doi.org/10.1109/LMAG.2013.2271744.
@article{osti_1233799,
title = {Magnetic Separation Dynamics of Colloidal Magnetic Nanoparticles},
author = {Kaur, M. and Huijin Zhang, and You Qiang,},
abstractNote = {Surface functionalized magnetic nanoparticles (MNPs) are appealing candidates for analytical separation of heavy metal ions from waste water and separation of actinides from spent nuclear fuel. This work studies the separation dynamics and investigates the appropriate magnetic-field gradients. A dynamic study of colloidal MNPs was performed for steady-state flow. Measurements were conducted to record the separation time of particles as a function of magnetic field gradient. The drag and magnetic forces play a significant role on the separation time. A drop in saturation magnetization and variation of particle size occurs after surface functionalization of the MNPs; these are the primary factors that affect the separation time and velocity of the MNPs. The experimental results are correlated to a theoretical one-dimensional model.},
doi = {10.1109/LMAG.2013.2271744},
url = {https://www.osti.gov/biblio/1233799}, journal = {IEEE Magnetics Letters},
issn = {1949-307X},
number = 2013,
volume = 4,
place = {United States},
year = {Tue Jan 01 00:00:00 EST 2013},
month = {Tue Jan 01 00:00:00 EST 2013}
}