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Rapid removal of uranium from aqueous solutions using magnetic Fe3O4@SiO2 composite particles.
J Environ Radioact. 2012 Apr; 106:40-6.JE

Abstract

Rapid removal of U(VI) from aqueous solutions was investigated using magnetic Fe(3)O(4)@SiO(2) composite particles as the novel adsorbent. Batch experiments were conducted to study the effects of initial pH, amount of adsorbent, shaking time and initial U(VI) concentrations on uranium sorption efficiency as well as the desorbing of U(VI). The sorption of uranium on Fe(3)O(4)@SiO(2) composite particles was pH-dependent, and the optimal pH was 6.0. In kinetics studies, the sorption equilibrium can be reached within 180 min, and the experimental data were well fitted by the pseudo-second-order model, and the equilibrium sorption capacities calculated by the model were almost the same as those determined by experiments. The Langmuir sorption isotherm model correlates well with the uranium sorption equilibrium data for the concentration range of 20-200 mg/L. The maximum uranium sorption capacity onto magnetic Fe(3)O(4)@SiO(2) composite particles was estimated to be about 52 mg/g at 25 °C. The highest values of uranium desorption (98%) was achieved using 0.01 M HCl as the desorbing agent. Fe(3)O(4)@SiO(2) composite particles showed a good selectivity for uranium from aqueous solution with other interfering cation ions. Present study suggested that magnetic Fe(3)O(4)@SiO(2) composite particles can be used as a potential adsorbent for sorption uranium and also provided a simple, fast separation method for removal of heavy metal ion from aqueous solution.

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Authors+Show Affiliations

Fan FL
Institute of Modern Physics, Chinese Academy of Sciences, Nanchang Road 509, Lanzhou 730000, China. fanfangli@impcas.ac.cn
Qin Z
No affiliation info available
Bai J
No affiliation info available
Rong WD
No affiliation info available
Fan FY
No affiliation info available
Tian W
No affiliation info available
Wu XL
No affiliation info available
Wang Y
No affiliation info available
Zhao L
No affiliation info available

MeSH

AdsorptionFerrosoferric OxideHydrogen-Ion ConcentrationKineticsMagneticsRecyclingSilicon DioxideSolutionsUraniumWater Pollutants, RadioactiveWater Purification

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

22304999

Citation

Fan, Fang-Li, et al. "Rapid Removal of Uranium From Aqueous Solutions Using Magnetic Fe3O4@SiO2 Composite Particles." Journal of Environmental Radioactivity, vol. 106, 2012, pp. 40-6.
Fan FL, Qin Z, Bai J, et al. Rapid removal of uranium from aqueous solutions using magnetic Fe3O4@SiO2 composite particles. J Environ Radioact. 2012;106:40-6.
Fan, F. L., Qin, Z., Bai, J., Rong, W. D., Fan, F. Y., Tian, W., Wu, X. L., Wang, Y., & Zhao, L. (2012). Rapid removal of uranium from aqueous solutions using magnetic Fe3O4@SiO2 composite particles. Journal of Environmental Radioactivity, 106, 40-6. https://doi.org/10.1016/j.jenvrad.2011.11.003
Fan FL, et al. Rapid Removal of Uranium From Aqueous Solutions Using Magnetic Fe3O4@SiO2 Composite Particles. J Environ Radioact. 2012;106:40-6. PubMed PMID: 22304999.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Rapid removal of uranium from aqueous solutions using magnetic Fe3O4@SiO2 composite particles. AU - Fan,Fang-Li, AU - Qin,Zhi, AU - Bai,Jing, AU - Rong,Wei-Dong, AU - Fan,Fu-You, AU - Tian,Wei, AU - Wu,Xiao-Lei, AU - Wang,Yang, AU - Zhao,Liang, Y1 - 2011/12/03/ PY - 2011/05/26/received PY - 2011/09/14/revised PY - 2011/11/09/accepted PY - 2012/2/7/entrez PY - 2012/2/7/pubmed PY - 2012/5/16/medline SP - 40 EP - 6 JF - Journal of environmental radioactivity JO - J Environ Radioact VL - 106 N2 - Rapid removal of U(VI) from aqueous solutions was investigated using magnetic Fe(3)O(4)@SiO(2) composite particles as the novel adsorbent. Batch experiments were conducted to study the effects of initial pH, amount of adsorbent, shaking time and initial U(VI) concentrations on uranium sorption efficiency as well as the desorbing of U(VI). The sorption of uranium on Fe(3)O(4)@SiO(2) composite particles was pH-dependent, and the optimal pH was 6.0. In kinetics studies, the sorption equilibrium can be reached within 180 min, and the experimental data were well fitted by the pseudo-second-order model, and the equilibrium sorption capacities calculated by the model were almost the same as those determined by experiments. The Langmuir sorption isotherm model correlates well with the uranium sorption equilibrium data for the concentration range of 20-200 mg/L. The maximum uranium sorption capacity onto magnetic Fe(3)O(4)@SiO(2) composite particles was estimated to be about 52 mg/g at 25 °C. The highest values of uranium desorption (98%) was achieved using 0.01 M HCl as the desorbing agent. Fe(3)O(4)@SiO(2) composite particles showed a good selectivity for uranium from aqueous solution with other interfering cation ions. Present study suggested that magnetic Fe(3)O(4)@SiO(2) composite particles can be used as a potential adsorbent for sorption uranium and also provided a simple, fast separation method for removal of heavy metal ion from aqueous solution. SN - 1879-1700 UR - https://www.unboundmedicine.com/medline/citation/22304999/Rapid_removal_of_uranium_from_aqueous_solutions_using_magnetic_Fe3O4@SiO2_composite_particles_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0265-931X(11)00270-0 DB - PRIME DP - Unbound Medicine ER -