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Czechoslovak Journal of Physics

, Volume 53, Supplement 1, pp A549–A556 | Cite as

Modelling the arsenic (V) and (III) adsorption

  • I. Rau
  • A. Meghea
  • I. Peleanu
  • A. Gonzalo
  • M. Valiente
  • M. Zaharescu
Part II Session 6: Separation Methods, Speciation

Abstract

Arsenic has gained great notoriety historically for its toxic properties. In aquatic environment, arsenic can exist in several oxidation states, as both inorganic and organometallic species. As (V) is less toxic than As (III). Most research has been directed to the control of arsenic pollution of potable water. Various techniques such as precipitation with iron and aluminium hydroxides, ion exchange, reverse osmosis, and adsorption are used for As (V) removal from surface and waste waters. Because of the easy handling of sludge, its free operation and regeneration capability, the adsorption technique has secured a place as one of the advanced methods of arsenic removal.

A study of As (III) and As (V) sorption onto some different adsorbents (Fe (III) — iminodiacetate resin, nanocomposite materials, Fe(III) — forager sponge) referring to kinetic considerations and modelling of the process will be presented.

All the systems studied are better described by Freundlich-Langmuir isotherm and the rate constant evaluation shows a sub-unitary order for the adsorption process.

Keywords

Arsenic Sponge Nanocomposite Material Arsenic Removal Sodium Arsenate 
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.

References

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Copyright information

© Institute of Physics, Acad. Sci. CR 2003

Authors and Affiliations

  • I. Rau
    • 1
  • A. Meghea
    • 1
  • I. Peleanu
    • 1
  • A. Gonzalo
    • 2
  • M. Valiente
    • 2
  • M. Zaharescu
    • 3
  1. 1.Dept. of Applied Physical Chemistry and ElectrochemistryPOLITEHNICA University of BucharestBucharestRomania
  2. 2.Dept. of Analytical ChemistryAUTONOMA University of BarcelonaBellaterraSpain
  3. 3.Institute of Physical ChemistryRomanian AcademyBucharestRomania

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