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Separation Science and Technology Volume 37, 2002 - Issue 16
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Original Articles

NANOCOMPOSITE MATERIALS FOR As(V) REMOVAL BY MAGNETICALLY INTENSIFIED ADSORPTION

Ion Peleanu Department of Applied Physical Chemistry and Electrochemistry, Faculty of Industrial Chemistry, Politehnica University of Bucharest, Polizu Street 1, Bucharest, 78126, RomaniaCorrespondence[email protected]
,
Maria Zaharescu Institute of Physical Chemistry, Romanian Academy, Splaiul Independentei 202, Bucharest, 77208, Romania
,
Ileana Rau Department of Applied Physical Chemistry and Electrochemistry, Faculty of Industrial Chemistry, Politehnica University of Bucharest, Polizu Street 1, Bucharest, 78126, Romania
,
Maria Crisan Institute of Physical Chemistry, Romanian Academy, Splaiul Independentei 202, Bucharest, 77208, Romania
,
Andrei Jitianu Institute of Physical Chemistry, Romanian Academy, Splaiul Independentei 202, Bucharest, 77208, Romania
&
Aurelia Meghea Department of Applied Physical Chemistry and Electrochemistry, Faculty of Industrial Chemistry, Politehnica University of Bucharest, Polizu Street 1, Bucharest, 78126, Romania
Pages 3693-3701 | Received 01 Sep 2001, Published online: 19 Aug 2006
 
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Abstract

New nanocomposite adsorbent based on silica and iron(III) oxide, thermally treated at 200°C has been used for the arsenic(V) removal. Adsorbents were prepared by sol–gel method, the iron oxides being generated in situ during the sol–gel process. Nanocomposite materials thus obtained have a convenient porosity and nanosized iron oxide content. The sorption experiments have been carried out in a batch mode by using aqueous solutions containing 1000 ppm As. The influence of different experimental parameters on the adsorption capacity was investigated. The effect of magnetic field on the enhancement of adsorption process was also revealed.

ACKNOWLEDGMENTS

This work has been carried out under the support received from Cangos International Corp., Calgary, Canada, which is gratefully acknowledged.

The authors thank Anna Gonzalo and Manuel Valiente from University Autonoma de Barcelona for their help in running iron and arsenic speciation simulations for this work.

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