Solid-Phase Extraction of Pb (II) Ions Based on L-Cysteine Functionalized Core-Shell Nanoparticles
Publication: Journal of Environmental Engineering
Volume 142, Issue 11
Abstract
A paramagnetic solid-phase nanoextractant, L-Cysteine functionalized (FSAC), was assembled for separating from wastewater. L-Cysteine molecules were fixed on the surface of nanoparticles by aminopropyl-silane. The properties of the nanoextractant were characterized by Fourier transform infrared spectroscopy (FTIR), a transmission electron microscope (TEM), and a vibrating sample magnetometer (VSM). It was shown that FSAC particles are sphere-like, are 20 nm in size, and have good paramagnetic properties. The FSAC nanoextractant shows good adsorption, excellent adsorption kinetics, wide acidic resistance, and high saturated adsorption capacity beyond , reached within 30 min. The applied nanoextractant can be completely recovered in a 1.0-M HCl/0.5% thiourea mixing solution within 5 min, but maintain over 92% adsorption when recycled 6 times.
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Acknowledgments
The authors thank the Natural Science Foundation of Shanghai (No.15ZR1428500) and the National Natural Science Foundation of China (No. 20906061) for financial support.
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Published In
Journal of Environmental Engineering
Volume 142 • Issue 11 • November 2016
Copyright
© 2016 American Society of Civil Engineers.
History
Received: Apr 29, 2015
Accepted: Mar 24, 2016
Published online: Jun 15, 2016
Published in print: Nov 1, 2016
Discussion open until: Nov 15, 2016
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