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Minerals 2016, 6(1), 9; https://doi.org/10.3390/min6010009

Removal of Uranium and Associated Contaminants from Aqueous Solutions Using Functional Carbon Nanotubes-Sodium Alginate Conjugates

1
Department of Chemical Engineering, Faculty of Engineering, Jordan University of Science and Technology, P.O. Box 3030, Irbid 22110, Jordan
2
Jordan Atomic Energy Commission, P.O. Box 70, Amman 11934, Jordan
3
Department of Chemical Sciences, Faculty of Science & Arts, Jordan University of Science and Technology, P.O. Box 3030, Irbid 22110, Jordan
*
Author to whom correspondence should be addressed.
Academic Editor: Mostafa Fayek
Received: 14 December 2015 / Revised: 21 January 2016 / Accepted: 25 January 2016 / Published: 2 February 2016
(This article belongs to the Special Issue Uranium Minerals: From Resources to Environmental Impact)
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Abstract

Synthesis of hydrophilic/hydrophobic beads from functional carbon nanotubes (CNTs) conjugated with sodium alginate was investigated. Glutaraldehyde was used as a coupling agent and Ca2+ as a crosslinking agent. The formed conjugate comprises two-dimensional sheets of sodium alginate bounded to long tufts of functional CNT tails of micro-size geometry. Detailed characterization of the conjugates was performed using thermogravimetric analysis (TGA) and its first derivative (DTG), Fourier transform infrared (FTIR), and scanning electron microscope (SEM) techniques. Different ratios of the conjugate were successfully prepared and used as biodegradable environmentally friendly sorbents. Removal of U6+, V3+, Cr3+, Mo3+, Pb2+, Mn2+, Cu2+, Ti4+ and Ni2+ from aqueous solutions using the synthesized biosorbent was experimentally demonstrated. Maximum metal uptake of 53 mg/g was achieved using the % Functional CNTs = 33 sample. View Full-Text
Keywords: functional CNT-sodium alginate beads; uranium tailings; water purification; industrial effluents; environmentally friendly biosorbents; hydrophilic/hydrophobic functional CNT-sodium alginate beads; uranium tailings; water purification; industrial effluents; environmentally friendly biosorbents; hydrophilic/hydrophobic
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Allaboun, H.; Fares, M.M.; Abu Al-Rub, F.A. Removal of Uranium and Associated Contaminants from Aqueous Solutions Using Functional Carbon Nanotubes-Sodium Alginate Conjugates. Minerals 2016, 6, 9.

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