Adsorption behavior of U(VI) ions from aqueous solution on novel cross-linked magnetic chitosan beads

被引：0
|
作者：
Huang, Guolin [1 ]
Chen, Zhongsheng [1 ]
Liang, Xizhen [1 ]
Shi, Jeffrey [2 ]
机构：
[1] Key Lab. of Radioactive Geology and Exploration Technol. Fundamental Science for National Defense, East China Institute of Technology, Fuzhou 344000, Jiangxi
[2] School of Chemical and Biomolecular Engineering, The University of Sydney
来源：
Huagong Xuebao/CIESC Journal | 2012年 / 63卷 / 03期
关键词：
Adsorption capacity; Cross-linked magnetic chitosan; Isotherms; Uranium;
D O I：
10.3969/j.issn.0438-1157.2012.03.023
中图分类号：
学科分类号：
摘要：
The performance of a novel cross-linked magnetic chitosan (TTG-MCTS), which is coated with magnetic fluids and cross-linked with glutaraldehyde and thiourea, is investigated for the adsorption of U(VI) from aqueous solutions. Infrared spectra of chitosan before and after modification show that the coating is successful and the cross-linking process is effective. The energy dispersive spectroscopy (EDS) analysis before and after adsorption indicates that U(VI) is adsorbed successfully onto the TTG-MCTS. The influences of the pH of solution, the initial concentration of U(VI) ions and the contact time on the adsorption amounts are discussed, and appropriate process conditions for the adsorption of U(VI) are obtained. Experimental equilibrium data are obtained and modeled using classical Freundlich and Langmuir adsorption isotherms. The data fits to the Langmuir isotherm better, and the uptake of U(VI) is 161.3 mg·g -1. Two simplified models including pseudo-first order and pseudo-second order equations are selected to follow the adsorption process. The experimental data for the kinetics of adsorption are correlated well with the pseudo-second order equation. © All Rights Reserved.
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页码：834 / 840
页数：6
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共 15 条
  • [1] Huang G.L., Shi J., Langrish T.A.G., Removal of Cr(VI) from aqueous solution using activated carbon modified with nitric acid, Chem. Eng. J., 152, pp. 434-439, (2009)
  • [2] Ostrovskii Y.V., Zabortsev G.M., Aleksandrov A.B., Khlytin A.L., Manych A.V., Galvanochemical treatment of solutions from nitric acid process of uranium refining, Radiochemistry, 52, 2, pp. 171-174, (2010)
  • [3] Yurlova L.Y., Kryvoruchko A.P., Romanyukina I.Y., Bogolepov A.A., Influence of pH on removal of uranium from aqueous solutions with polyethylenimine, disodium dihydrogen ethylenediaminetetraacetate, and their mixtures, Radiochemistry, 52, 4, pp. 418-423, (2010)
  • [4] Yousfi I., Bole J., Geiss O., Chemical extractions applied to the determination of radium speciation in uranium mill tailing: Study of different reagents, Journal of Radioanalytical and Nuclear Chemistry, 240, 3, pp. 835-840, (1999)
  • [5] Hu K., Shi W., Hu E., Liao J., Li J., Treatment of uranium mining and metallurgy tailing water by electrodialysis, Nonferrous Metals, 3, 2, pp. 280-280, (2011)
  • [6] Yurlova L.Y., Kryvoruchko A.P., Purification of uranium-containing waters by the ultra- and nanofiltration using modified montmorillonite, Journal of Water Chemistry and Technology, 32, 6, pp. 358-364, (2010)
  • [7] Ren J., Mu T., Yang S., Zhao Y., Luo S., Treatment of high salinity low level radioactive wastewater containing uranium and plutonium by flocculation, Journal of Nuclear and Radiochemistry, 30, 4, pp. 202-208, (2008)
  • [8] Cao X., Liu Y., Zhu Z., Luo M., Study on adsorptions of uranium(VI) with the chitosan and its derivants, Chemical Research and Application, 18, 7, pp. 977-980, (2006)
  • [9] Chu K.H., Removal of uranium from aqueous solution by chitosan in prawn shell: Adsorption equilibrium and kinetics, J. Hazard. Mater., 90, 1, pp. 77-95, (2002)
  • [10] Zhou L., Wang Y., Huang Q., Adsorption of Hg <sup>2+</sup> and UO <sub>2</sub> <sup>2+</sup> by ethylenediamine modified chitosan magnetic microspheres, Journal of Nuclear and Radiochemistry, 29, 3, pp. 184-189, (2007)
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