Abstract

SOLACHE-RIOS, Marcos José; VILLALVA-COYOTE, Rafael  and  DIAZ-NAVA, María del Carmen. Sorption and Desorption of Remazol Yellow by a Fe-Zeolitic Tuff. J. Mex. Chem. Soc [online]. 2010, vol.54, n.1, pp.59-68. ISSN 1870-249X.

The adsorption of remazol yellow from aqueous solution was evaluated using a Fe-zeolitic tuff. The adsorbent was characterized by scanning electron microscopy, IR spectroscopy and X-Ray diffraction. Sorption kinetic and isotherms were determined and the adsorption behavior was analyzed. Kinetic pseudo-second order and Langmuir-Freundlich models were successfully applied to the experimental results, indicating chemisorption on a heterogeneous material. The regeneration of the material was best accomplished by using a H₂O₂ solution. The sorption capacity of the Fe-zeolitic tuff increased when the saturated samples were treated with a H₂O₂ or FeCl₃ solution.

Keywords : Remazol; sorption; desorption; Fe-zeolitic tuff.

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