Sorption and Desorption of Remazol Yellow by a Fe-Zeolitic Tuff

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.

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Bibliographic Details
Main Authors: Solache-Ríos,Marcos José, Villalva-Coyote,Rafael, Díaz-Nava,María del Carmen
Format: Digital revista
Language:English
Published: Sociedad Química de México A.C. 2010
Online Access:http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1870-249X2010000100010
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Description
Summary: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.