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Uranium recovery from UCF liquid waste by nanoporous MCM-41: Breakthrough capacity and elution behavior studies

Mousavi, S. M ; Sharif University of Technology | 2013

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  1. Type of Document: Article
  2. DOI: 10.1007/s11164-012-0607-9
  3. Publisher: 2013
  4. Abstract:
  5. Adsorption and recovery of uranium by nanoporous MCM-41 from aqueous solutions (synthetic solution and uranium conversion facility liquid waste) were investigated by use of a fixed-bed column (1.2 cm diameter and 3.0 cm height). Adsorption was carried out at flow rates 0.2 and 0.5 mL min-1, which correspond to retention times of 10 and 6 min. The maximum breakthrough capacity for uranium ions was achieved by use of nanoporous MCM-41 at the optimum pH of 3.6 and flow rate 0.2 mL min-1 (61.95 μg g-1). The Thomas and Yan models were applied to the experimental data, by use of linear regression, to determine the characteristics of the column for process design. The breakthrough curves calculated from the models were in good agreement with the experimental data. The elution behavior of uranium on nanoporous MCM-41 was studied with different eluents; the results showed that 0.1 M HCl is good eluent for uranium recovery. The regenerated column could be used in a multitude of adsorption-desorption cycles
  6. Keywords:
  7. Nanoporous MCM-41 ; UCF liquid waste ; Uranium recovery ; Adsorption and recoveries ; Adsorption-desorption cycles ; Break through curve ; Breakthrough capacity ; Liquid wastes ; Nano-porous ; Synthetic solutions ; Uranium conversion facilities ; Adsorption ; Flow rate ; Liquids ; Radioactive wastes ; Recovery ; Uranium ; Mesoporous materials
  8. Source: Research on Chemical Intermediates ; Volume 39, Issue 3 , 2013 , Pages 951-959 ; 09226168 (ISSN)
  9. URL: http://link.springer.com/article/10.1007%2Fs11164-012-0607-9