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Title of Journal: J Radioanal Nucl Chem

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Abbravation: Journal of Radioanalytical and Nuclear Chemistry

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Springer Netherlands

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DOI

10.1016/j.ahj.2004.01.021

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ISSN

1588-2780

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Impact of environmental conditions on the sorption behavior of radiocobalt onto montmorillonite

Authors: Tao Wen, Yuantao Chen, Linsen Cai,

Publish Date: 2011/07/16
Volume: 290, Issue:2, Pages: 437-
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Abstract

The sorption of Co(II) on Na-montmorillonite was conducted under various conditions, i.e., contact time, adsorbent dosage, pH, ionic strength, foreign ions, fulvic acid (FA), humic acid (HA) and temperature. Results of sorption data analysis indicated the sorption of cobalt on Na-montmorillonite was strongly dependent on pH and ionic strength. At low pH, the sorption of Co(II) was dominated by outer-sphere surface complexation and ion exchange with Na+/H+ on Na-montmorillonite, whereas inner-sphere surface complexation was the main sorption mechanism at high pH. The presence of different cations influenced Co(II) sorption, while the presence of different anions had no differentiable influences on Co(II) sorption. The presence of HA and FA decreased the sorption of Co(II) on montmorillonite. The sorption isotherms are simulated well with the Langmuir model. The thermodynamic parameters (ΔH°, ΔS° and ΔG°) calculated from the temperature dependent isotherms indicated that the sorption reaction of Co(II) on montmorillonite was an endothermic and spontaneous process. The sorption test revealed that the low cost material was a suitable material in the preconcentration of Co(II) from large volumes of aqueous solutions.


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Other Papers In This Journal:

  1. Solid phase microextraction sampling of high explosive residues in the presence of radionuclides and radionuclide surrogate metals
  2. Comparative study of inorganic elements determination in whole blood from Crioula breed horse by EDXRF and NAA analytical techniques
  3. Terrestrial gamma dose rate in Pahang state Malaysia
  4. PIXE analysis for bioaccumulation studies of trace elements
  5. Radioactive impact of a bauxite beneficiation plant in the Itea Gulf (Gulf of Corinth
  6. Quantitative analysis of neodymium
  7. Modified TTA method for the determination of plutonium
  8. Application of radiometric method for element migration determination from plastic packaging to food
  9. Study of Doppler broadening of gamma-ray spectra in 14-MeV neutron activation analysis
  10. Radiological assessment of pharmaceutical clays
  11. The operator dose assessment of landmine detection systems using the neutron backscattering method
  12. Alpha and gamma radiolysis of nuclear solvent extraction ligands used for An(III) and Ln(III) separations
  13. Rapid separation of actinides and radiostrontium in vegetation samples
  14. Kinetics for extraction of zirconium and hafnium in DIBK-P350 system
  15. Source injection distribution functions for alarm algorithm testing
  16. Description and application of a novel glucagon-like peptide-1 (GLP-1) radioimmunoassay
  17. Simultaneous determination and uptake assessment of selected radionuclides in plants grown in substrate contaminated with U-mill tailings
  18. Instrumental neutron activation analysis of hafnium in zirconium metal using internal standardization
  19. Radionuclides in redistributed sediments and ash from the Las Conchas fire in Northern New Mexico
  20. Neutron activation analysis of air-filters collected in Spokane
  21. Rapid method for determination of plutonium

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