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Journal of Radioanalytical and Nuclear Chemistry

, Volume 209, Issue 1, pp 75–89 | Cite as

Removal of Zn(II) from dilute aqueous solutions and radioactive process wastewater by foam separation

  • Sh. G. Beheir
  • M. Aziz
Article

Abstract

Ion, precipitate and adsorbing colloid flotations of zinc(II) from dilute aqueous solutions have been investigated over a wide pH range using the anionic surfactant Aerosol OT or the cationic collector cetyl pyridinium chloride. In case of adsorbing colloid flotation (ACF) iron oxyhydroxide and aluminium hydroxide were used, either separately or together, as coprecipitants. The precipitate flotation curves were compared with the corresponding theoretical one calculated from the data published for Zn(II) hydrolysis. In addition to the effect of pH on the percent removal the effects of collector concentration, ionic strength, bubbling time and metal ion concentration were investigated and the optimum conditions were established. High removals could be achieved especially with ACF. The results obtained are discussed with respect to the chemical state of zinc, the ionization behaviour of the collectors and properties of the coprecipitants. The developed ACF process was applied to the removal of65Zn from radioactive process wastewater.

Keywords

Surfactant Foam Anionic Surfactant Aluminium Hydroxide Oxyhydroxide 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Akadémiai Kiadó 1996

Authors and Affiliations

  • Sh. G. Beheir
    • 1
  • M. Aziz
    • 1
  1. 1.Radiation Protection and Nuclear Chemistry Departments, Nuclear Research and Hot Laboratories CentresAtomic Energy Authority, Atomic EnergyCairo(Egypt)

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