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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 639-640Adsorption Characteristic of U(VI) on...

Adsorption Characteristic of U(VI) on Fe-Immobilized Bentonite

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Abstract:

Fe-immobilized bentonite, prepared with bentonite and FeCl3 was used for the adsorption of uranium(VI) in this study, solution pH, ion strength, contact time and temperature were investigated, structural characterization of Fe-immobilized bentonite was assayed by X-ray Diffraction and Fourier Transform Infrared Spectroscopy. Results indicated that the adsorption capacity were strongly affected by the solution pH and ion strength, the adsorption efficiency was 91.8% when pH value was 6 and ion strength was 0.01 mol•L-1, higher or lower pH did not favor the U(VI) adsorption. The adsorption mechanism was discussed by the views of reactive kinetics and thermodynamics along with Scanning Electron Microscope. The adsorption kinetics process was fitted well with the second-order kinetic equation, when the initial U(VI) concentration was less than 38.08mg/L, Langmuir equations could describe the adsorption isotherm of U(VI) well with the maximum adsorption capacity of 169.5mg/g at 303K

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Periodical:

Advanced Materials Research (Volumes 639-640)

Pages:

1300-1306

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.639-640.1300

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Online since:

January 2013

Authors:

Zhen Ping Tang, Hui Ling, Shui Bo Xie, S.Y. Li, J.S. Wang, H.Y. Liu

Keywords:

Adsorption, Fe-Immobilized Bentonite, Isotherm, Kinetic, Uranium(VI)

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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