Radiotracer technique in adsorption studies

X. Efficient removal of Ba(II) from aqueous solutions by hydrous manganese oxide
  • S. P. Mishra
  • D. Tiwary
Article

Abstract

Hydrous manganese oxide (HMO) was synthesized and its adsorption properties with respect to Ba(II) ions investigated as a function of contact time, adsorptive concentration, temperature and pH, using a radiotracer technique. The adsorption equilibrium is achieved quickly in ca. 30 min and the steady state values of adsorption at various concentrations (10−2–10−7M) agree well with the classical Freundlich isotherm. The adsorption increases with increasing pH and reaches a maximum followed by a plateau over a fairly wide pH range. The temperature markedly affects the extent of adsorption and the process is thermodynamically found to be irreversible.

Keywords

Oxide Physical Chemistry Steady State Manganese Inorganic Chemistry 

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Copyright information

© Akadémiai Kiadó 1993

Authors and Affiliations

  • S. P. Mishra
    • 1
  • D. Tiwary
    • 1
  1. 1.Nuclear and Radiochemistry Laboratory, Department of ChemistryBanaras Hindu UniversityVaranasi(India)

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