<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>1870-249X</journal-id>
<journal-title><![CDATA[Journal of the Mexican Chemical Society]]></journal-title>
<abbrev-journal-title><![CDATA[J. Mex. Chem. Soc]]></abbrev-journal-title>
<issn>1870-249X</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Química de México A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1870-249X2010000100010</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Sorption and Desorption of Remazol Yellow by a Fe-Zeolitic Tuff]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Solache-Ríos]]></surname>
<given-names><![CDATA[Marcos José]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Villalva-Coyote]]></surname>
<given-names><![CDATA[Rafael]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Díaz-Nava]]></surname>
<given-names><![CDATA[María del Carmen]]></given-names>
</name>
<xref ref-type="aff" rid="A02"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Instituto Nacional de Investigaciones Nucleares Departamento de Química ]]></institution>
<addr-line><![CDATA[México D. F.]]></addr-line>
<country>México</country>
</aff>
<aff id="A02">
<institution><![CDATA[,Instituto Tecnológico de Toluca División de Estudios del Posgrado ]]></institution>
<addr-line><![CDATA[Metepec Estado de México]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>03</month>
<year>2010</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>03</month>
<year>2010</year>
</pub-date>
<volume>54</volume>
<numero>1</numero>
<fpage>59</fpage>
<lpage>68</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1870-249X2010000100010&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1870-249X2010000100010&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1870-249X2010000100010&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[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.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Se estudió la adsorción de amarillo remazol utilizando una roca zeolítica acondicionada con hierro. El adsorbente se caracterizó por microscopia electrónica de barrido, espectroscopia IR y difracción de rayos-X. Se determinaron la cinética y las isotermas de sorción y el comportamiento fue analizado. Los resultados experimentales se ajustaron a los modelos de cinética de pseudo-segundo orden y Langmuir-Freundlich, indicando sorción química sobre un material heterogéneo. La regeneración del material se logró mejor con una solución de H2O2. La capacidad de sorción del material zeolítico aumentó cuando las muestras se trataron con soluciones de H2O2 o FeCl3.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Remazol]]></kwd>
<kwd lng="en"><![CDATA[sorption]]></kwd>
<kwd lng="en"><![CDATA[desorption]]></kwd>
<kwd lng="en"><![CDATA[Fe-zeolitic tuff]]></kwd>
<kwd lng="es"><![CDATA[Remazol]]></kwd>
<kwd lng="es"><![CDATA[sorción]]></kwd>
<kwd lng="es"><![CDATA[desorción]]></kwd>
<kwd lng="es"><![CDATA[roca zeolítica]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[ <p align="justify"><font face="verdana" size="4">Article</font></p>     <p align="center"><font face="verdana" size="2">&nbsp;</font></p>     <p align="center"><font face="verdana" size="4"><b>Sorption and Desorption of Remazol Yellow by a Fe&#150;Zeolitic Tuff</b></font></p>     <p align="center"><font face="verdana" size="2">&nbsp;</font></p>     <p align="center"><font face="verdana" size="2"><b>Marcos Jos&eacute; Solache&#150;R&iacute;os,<sup>1* </sup> Rafael Villalva&#150;Coyote,<sup>1,</sup> <sup>2</sup> and Mar&iacute;a del Carmen D&iacute;az&#150;Nava<sup>2</sup></b></font></p>     <p align="center"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><i><sup>1 </sup>Instituto Nacional de Investigaciones Nucleares, Departamento de Qu&iacute;mica, A. P. 18&#150;1027, Col. Escand&oacute;n, Delegaci&oacute;n Miguel Hidalgo, C. P. 11801, M&eacute;xico, D. F., M&eacute;xico. Tel.: +52 5553297200 x 2262; fax: +52 5553297301. <sup>*</sup>Responsible author:</i> <a href="mailto:marcos.solache@inin.gob.mx">marcos.solache@inin.gob.mx</a>.</font></p>     <p align="justify"><font face="verdana" size="2"><i><sup>2</sup> Instituto Tecnol&oacute;gico de Toluca, Divisi&oacute;n de Estudios del Posgrado, Av. Tecnol&oacute;gico s/n, Ex Rancho La Virgen, C.P. 52140, Metepec, Estado de M&eacute;xico, M&eacute;xico.</i></font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2">Received December 8, 2009    ]]></body>
<body><![CDATA[<br> Accepted March 29, 2010</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>Abstract</b></font></p>     <p align="justify"><font face="verdana" size="2">The adsorption of remazol yellow from aqueous solution was evaluated using a Fe&#150;zeolitic tuff. The adsorbent was characterized by scanning electron microscopy, IR spectroscopy and X&#150;Ray diffraction. Sorption kinetic and isotherms were determined and the adsorption behavior was analyzed. Kinetic pseudo&#150;second order and Langmuir&#150;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 H<sub>2</sub>O<sub>2</sub> solution. The sorption capacity of the Fe&#150;zeolitic tuff increased when the saturated samples were treated with a H<sub>2</sub>O<sub>2</sub> or FeCl<sub>3</sub> solution.</font></p>     <p align="justify"><font face="verdana" size="2"><b>Keywords: </b>Remazol, sorption, desorption, Fe&#150;zeolitic tuff.</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>Resumen</b></font></p>     <p align="justify"><font face="verdana" size="2">Se estudi&oacute; la adsorci&oacute;n de amarillo remazol utilizando una roca zeol&iacute;tica acondicionada con hierro. El adsorbente se caracteriz&oacute; por microscopia electr&oacute;nica de barrido, espectroscopia IR y difracci&oacute;n de rayos&#150;X. Se determinaron la cin&eacute;tica y las isotermas de sorci&oacute;n y el comportamiento fue analizado. Los resultados experimentales se ajustaron a los modelos de cin&eacute;tica de pseudo&#150;segundo orden y Langmuir&#150;Freundlich, indicando sorci&oacute;n qu&iacute;mica sobre un material heterog&eacute;neo. La regeneraci&oacute;n del material se logr&oacute; mejor con una soluci&oacute;n de H<sub>2</sub>O<sub>2</sub>. La capacidad de sorci&oacute;n del material zeol&iacute;tico aument&oacute; cuando las muestras se trataron con soluciones de H<sub>2</sub>O<sub>2</sub> o FeCl<sub>3</sub>.</font></p>     <p align="justify"><font face="verdana" size="2"><b>Palabras clave: </b>Remazol, sorci&oacute;n, desorci&oacute;n, roca zeol&iacute;tica.</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2"><a href="/pdf/jmcs/v54n1/v54n1a10.pdf" target="_blank">DESCARGAR ART&Iacute;CULO EN FORMATO PDF</a></font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>Acknowledgements</b></font></p>     <p align="justify"><font face="verdana" size="2">We acknowledge financial support from CONACYT, project 46219&#150;Q.</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>References</b></font></p>     <!-- ref --><p align="justify"><font face="verdana" size="2">1. Sanghi, R.; Bhattacharya, B. <i>Color Technol. </i><b>2002, </b><i>118, </i>256&#150;269.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=4910888&pid=S1870-249X201000010001000001&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>     <!-- ref --><p align="justify"><font face="verdana" size="2">2. Lee, J. W.; Choi, S. P.; Thiruvrnkatachari, R.; Shim, W. G.; Moon, H. <i>Dyes Pigments. </i><b>2006, </b><i>69, </i>196&#150;203.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=4910890&pid=S1870-249X201000010001000002&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>     ]]></body>
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