Journal of Radioanalytical and Nuclear Chemistry

, Volume 172, Issue 2, pp 329–339 | Cite as

Separation of Co(II) from dilute aqueous solutions by precipitate and adsorbing colloid flotation

  • K. Shakir
  • K. Benyamin
  • M. Aziz
Article

Abstract

Ion, precipitate and adsorbing colloid flotation of cobalt(II) have been investigated at different pH values, using N-dodecylpyridinium chloride (DPCl), A strong cationic surfactant, and sodium lauryl sulfate (NaLS), a strong anionic surfactant, as collectors. In case of adsorbing colloid flotation, hydrous manganese dioxide was used as an adsorbent. The precipitate flotation curves experimentally obtained with the two tested collectors were compared with the corresponding theoretical one calculated from the data published for Co(II) hydrolysis. The effects of the collector concentration, ageing of the water-MnO2−Co(II) system, bubbling time period, cobalt(II) concentration and foreign salts on the percent removal of Co(II) by adsorbing colloid flotation using DPCl as collector were determined. Removals approaching 100% could be achieved under the optimum conditions.

Keywords

Surfactant Hydrolysis Cobalt Manganese Cationic Surfactant 

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Copyright information

© Akadémiai Kiadó 1993

Authors and Affiliations

  • K. Shakir
    • 1
  • K. Benyamin
    • 1
  • M. Aziz
    • 1
  1. 1.Nuclear Chemistry and Radiation Protection Departments, Nuclear Research CentreAtomic Energy EstablishmentCairoEgypt

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