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Modelling the arsenic (V) and (III) adsorption

  • Part II
  • Session 6: Separation Methods, Speciation
  • Published:
Czechoslovak Journal of Physics Aims and scope

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.

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Authors and Affiliations

  1. Dept. of Applied Physical Chemistry and Electrochemistry, POLITEHNICA University of Bucharest, 1 Polizu Street, 78126, Bucharest, Romania

    I. Rau, A. Meghea & I. Peleanu

  2. Dept. of Analytical Chemistry, AUTONOMA University of Barcelona, 08193, Bellaterra, Spain

    A. Gonzalo & M. Valiente

  3. Institute of Physical Chemistry, Romanian Academy, 202 Splaiul Independentei, Bucharest, Romania

    M. Zaharescu

Authors
  1. I. Rau
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  2. A. Meghea
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  3. I. Peleanu
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  4. A. Gonzalo
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  5. M. Valiente
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  6. M. Zaharescu
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Additional information

This work has been carried out under the support received from CANGOS INTERNATIONAL CORP., Calgary, Canada, which is gratefully acknowledged. Bayer Hispania Industrial SA and Dynaphore Inc. are gratefully aknowledged for kindly supplying samples of Lewatit resin and FORAGER Sponge material.

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Rau, I., Meghea, A., Peleanu, I. et al. Modelling the arsenic (V) and (III) adsorption. Czech J Phys 53 (Suppl 1), A549–A556 (2003). https://doi.org/10.1007/s10582-003-0071-2

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  • DOI: https://doi.org/10.1007/s10582-003-0071-2

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