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Adsorptive extraction of uranium (VI) from seawater using dihydroimidazole functionalized multiwalled carbon nanotubes

  • Kun Tian , Jinling Wu and Jianlong Wang EMAIL logo
Published/Copyright: May 29, 2018
Radiochimica Acta
From the journal Radiochimica Acta Volume 106 Issue 9

Abstract

The adsorptive extraction of uranium (VI) was investigated using multiwalled carbon nanotubes functionalized with dihydroimidazole (DIM-MWCNTs). Dihydroimidazole was grafted onto the surface of MWCNTs via silane coupling agent, N-(3-triethoxysilylpropyl)-4,5-dihydroimidazole. The new adsorbent was characterized using Fourier transform infrared, scanning electron microscope and X-ray Photoelectron Spectroscopy. DIM-MWCNTs were compared with MWCNTs and amidoxime modified MWCNTs (AO-MWCNTs) for uranium adsorption under seawater conditions. The adsorption capacity of uranium onto DIM-MWCNTs was 54.9 mg g−1 at 298 K, which was about 4 times of MWCNTs and similar to that of AO-MWCNTs. Compared with AO-MWCNTs, DIM-MWCNTs were more suitable for seawater pH, and less affected by vanadium. Although DIM-MWCNTs were more affected by carbonate than AO-MWCNTs, DIM-MWCNTs maintained a higher adsorption capacity than AO-MWCNTs due to its alkali resistance. Pyridine-like nitrogen (CH=N–CH) contributed to the adsorption of uranium. The results suggested that DIM-MWCNTs were a potential effective adsorbent for the separation of uranium under seawater condition.

Keywords: Uranium; extraction; seawater; dihydroimidazole; multiwalled carbon nanotubes; adsorption
Corresponding author: Jianlong Wang, PhD, Tsinghua University, Beijing, China

Acknowledgements

The research was supported by the National Key Research and Development Program (2016YFC1402507), the National S&T Major Project (2013ZX06002001), the National Natural Science Foundation of China (51338005) and the Program for Changjiang Scholars and Innovative Research Team in University (IRT-13026).

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Received: 2017-12-10
Accepted: 2018-04-11
Published Online: 2018-05-29
Published in Print: 2018-09-25

©2018 Walter de Gruyter GmbH, Berlin/Boston

Articles in the same Issue

  1. Frontmatter
  2. Measurement of cross sections and isomeric cross-section ratios for the (n,2n) reactions on 85,87Rb in energies between 13 and 15 MeV
  3. Adsorptive extraction of uranium (VI) from seawater using dihydroimidazole functionalized multiwalled carbon nanotubes
  4. Diatomite modified by TiO2 for adsorption of U(VI)
  5. Production and separation of no-carrier-added 181−184Re radioisotopes from proton irradiated tungsten target
  6. Radioiodinated celiprolol as a new highly selective radiotracer for β1-adrenoceptor-myocardial perfusion imaging
  7. Determination of the Sr/Ca ratio of tooth samples by photoactivation analysis in Southern Turkey
  8. Thermal neutron activation analysis of some toxic and trace chemical element contents in Mentha pulegium L.
  9. Thermal decomposition of un-irradiated and γ-ray irradiated holmium acetate tetrahydrate. Part 1: kinetics of nonisothermal dehydration of un-irradiated and γ-ray irradiated Ho(CH3COO)3⋅4H2O
  10. Study of radiotoxic 210Po in Indian tobacco using liquid scintillation spectrometry
  11. Preliminary investigations on reducing the high radiation risk level of TENORM scale waste from petroleum industry
https://doi.org/10.1515/ract-2017-2913
Keywords for this article
Uranium; extraction; seawater; dihydroimidazole; multiwalled carbon nanotubes; adsorption

Articles in the same Issue

  1. Frontmatter
  2. Measurement of cross sections and isomeric cross-section ratios for the (n,2n) reactions on 85,87Rb in energies between 13 and 15 MeV
  3. Adsorptive extraction of uranium (VI) from seawater using dihydroimidazole functionalized multiwalled carbon nanotubes
  4. Diatomite modified by TiO2 for adsorption of U(VI)
  5. Production and separation of no-carrier-added 181−184Re radioisotopes from proton irradiated tungsten target
  6. Radioiodinated celiprolol as a new highly selective radiotracer for β1-adrenoceptor-myocardial perfusion imaging
  7. Determination of the Sr/Ca ratio of tooth samples by photoactivation analysis in Southern Turkey
  8. Thermal neutron activation analysis of some toxic and trace chemical element contents in Mentha pulegium L.
  9. Thermal decomposition of un-irradiated and γ-ray irradiated holmium acetate tetrahydrate. Part 1: kinetics of nonisothermal dehydration of un-irradiated and γ-ray irradiated Ho(CH3COO)3⋅4H2O
  10. Study of radiotoxic 210Po in Indian tobacco using liquid scintillation spectrometry
  11. Preliminary investigations on reducing the high radiation risk level of TENORM scale waste from petroleum industry
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