Journal of Radioanalytical and Nuclear Chemistry
Volume/Issue:
Volume 289: Issue 2
Sorption of uranium(VI) from aqueous solution onto magnesium silicate hollow spheres
Authors:
Fangli Fan Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000 China

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Huajie Ding Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000 China

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Jing Bai Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000 China

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Xiaolei Wu Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000 China

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Fuan Lei Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000 China

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Wei Tian Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000 China

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Yang Wang Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000 China

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Zhi Qin Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000 China

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Pages:
367–374
Online Publication Date:
20 Apr 2011
Publication Date:
01 Aug 2011
Article Category:
Research Article
DOI:
https://doi.org/10.1007/s10967-011-1091-1
Keywords:
Uranium(VI); Magnesium silicate hollow spheres; Sorption; Kinetics; Desorption
Restricted access

Abstract  

The sorption of uranium(VI) from aqueous solutions was investigated using synthesized magnesium silicate hollow spheres as a novel adsorbent. Batch experiments were conducted to study the effects of initial pH, amount of adsorbent, contact time and initial U(VI) concentrations on uranium sorption efficiency. The desorbing of U(VI) and the effect of coexisting ions were also investigated. Kinetic studies showed that the sorption followed a pseudo-second-order kinetic model. The Langmuir sorption isotherm model correlates well with the uranium sorption equilibrium data for the concentration range of 25–400 mg/L. The maximum uranium sorption capacity onto magnesium silicate hollow spheres was estimated to be about 107 mg/g under the experimental conditions. Desorption of uranium was achieved using inorganic acid as the desorbing agent. The practical utility of magnesium silicate hollow spheres for U(VI) uptake was investigated with high salt concentration of intercrystalline brine. This work suggests that magnesium silicate hollow spheres can be used as a highly efficient adsorbent for removal of uranium from aqueous solutions.

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Cover Journal of Radioanalytical and Nuclear Chemistry
Journal of Radioanalytical and Nuclear Chemistry
Print ISSN:
0236-5731
Online ISSN:
1588-2780

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Journal of Radionalytical and Nuclear Chemistry
Language English
Size A4
Year of
Foundation		 1968
Volumes
per Year		 1
Issues
per Year		 12
Founder Akadémiai Kiadó
Founder's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 0236-5731 (Print)
ISSN 1588-2780 (Online)

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