<?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>1665-2738</journal-id>
<journal-title><![CDATA[Revista mexicana de ingeniería química]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. Mex. Ing. Quím]]></abbrev-journal-title>
<issn>1665-2738</issn>
<publisher>
<publisher-name><![CDATA[Universidad Autónoma Metropolitana, División de Ciencias Básicas e Ingeniería]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1665-27382014000100023</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[A heterogeneous biodiesel production kinetic model]]></article-title>
<article-title xml:lang="es"><![CDATA[Un modelo cinético hetergéneo para la producción de biodiesel]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González-Brambila]]></surname>
<given-names><![CDATA[M. M.]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Montoya de la Fuente]]></surname>
<given-names><![CDATA[J. A.]]></given-names>
</name>
<xref ref-type="aff" rid="A02"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González-Brambila]]></surname>
<given-names><![CDATA[O.]]></given-names>
</name>
<xref ref-type="aff" rid="A03"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[López-Isunza]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<xref ref-type="aff" rid="A04"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Universidad Autónoma Metropolitana-Azcapotzalco  ]]></institution>
<addr-line><![CDATA[México D. F.]]></addr-line>
<country>México</country>
</aff>
<aff id="A02">
<institution><![CDATA[,Instituto Mexicano del Petróleo  ]]></institution>
<addr-line><![CDATA[México D. F.]]></addr-line>
<country>México</country>
</aff>
<aff id="A03">
<institution><![CDATA[,Centro de Ingeniería y Desarrollo Industrial  ]]></institution>
<addr-line><![CDATA[Querétaro Qro.]]></addr-line>
<country>México</country>
</aff>
<aff id="A04">
<institution><![CDATA[,Universidad Autónoma Metropolitana-Iztapalapa  ]]></institution>
<addr-line><![CDATA[México D.F.]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2014</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2014</year>
</pub-date>
<volume>13</volume>
<numero>1</numero>
<fpage>311</fpage>
<lpage>322</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1665-27382014000100023&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1665-27382014000100023&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1665-27382014000100023&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[This work presents a heterogeneous dynamic model for the production of biodiesel using palmitic triglyceride and methanol as raw materials. Triglycerides are the main compounds in vegetable oils and when its total is beyond 97%, it is possible to produce biodiesel by means of a basic transesterification employing sodium hydroxide as a catalyst. The model takes into account that triglycerides are not soluble in alcohol so two liquid phases exist in the batch reactor, causing the reaction to occur in the triglyceride-methanol interphase. Results show that the model successfully calculates the concentration profile of triglyceride, alcohol and biodiesel in time as well as the intermediaries' products in the reactor. It also predicts concentration profiles at different temperatures in accordance to the Arrhenius' Law.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Este trabajo presenta el desarrollo de un modelo dinámico para la producción de biodiesel utilizando como materias primas triglicérido palmítico y metanol. Los aceites vegetales se componen principalmente de triglicéridos y cuando la concentración de estos últimos es mayor al 97%, se utiliza un catalizador básico para llevar a cabo la reacción de transesterificación para obtener biodiesel. Este modelo considera que los triglicéridos no son solubles en el metanol, por lo que se forman dos fases al colocar ambos en un reactor por lotes, lo cual provoca que la reacción se lleve a cabo únicamente en la superficie de la gotas, esto es en la interfase metanol-triglicérido. Los resultados obtenidos con el modelo predicen de manera satisfactoria los perfiles de concentración de triglicéridos, alcohol y biodiesel en el tiempo, así como la concentración de los productos intermedios dentro del reactor. Así mismo predice la disminución del tamaño de las gotas y los perfiles de concentración a diferentes temperaturas.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[biodiesel]]></kwd>
<kwd lng="en"><![CDATA[kinetic modeling]]></kwd>
<kwd lng="en"><![CDATA[transesterification]]></kwd>
<kwd lng="en"><![CDATA[batch reactor]]></kwd>
<kwd lng="en"><![CDATA[kinetic]]></kwd>
<kwd lng="es"><![CDATA[biodiesel]]></kwd>
<kwd lng="es"><![CDATA[modelado]]></kwd>
<kwd lng="es"><![CDATA[transesterification]]></kwd>
<kwd lng="es"><![CDATA[reactor por lotes]]></kwd>
<kwd lng="es"><![CDATA[cinética]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[  	    <p align="justify"><font face="verdana" size="4">Biotecnolog&iacute;a </font></p>     <p align="justify">&nbsp;</p>     <p align="center"><font face="verdana" size="4"><b>A heterogeneous biodiesel production kinetic model</b></font></p>     <p align="center">&nbsp;</p>     <p align="center"><b><font face="verdana" size="3">Un modelo cin&eacute;tico heterg&eacute;neo para la producci&oacute;n de biodiesel</font></b></p>     <p align="center">&nbsp;</p>      <p align="center"><b><font face="verdana" size="2">M. M. Gonz&aacute;lez&#45;Brambila<sup>1</sup>*, J. A. Montoya de la Fuente<sup>2</sup>, O. Gonz&aacute;lez&#45;Brambila<sup>3</sup> y F. L&oacute;pez&#45;Isunza<sup>4</sup></font></b><font face="verdana" size="2"></font></p>     <p align="justify">&nbsp;</p>      <p align="justify"><font face="verdana" size="2"><i><sup>1</sup> Universidad Aut&oacute;noma Metropolitana&#45;Azcapotzalco. Av. San Pablo 180. Col. Reynosa, Tamaulipas, Azcapotzalco. M&eacute;xico, 02200, D. F., M&eacute;xico. </i>*<i>Corresponding author. E&#45;mail</i>: <a href="mailto:margarita.gonzlezbrambila@gmail.com">margarita.gonzlezbrambila@gmail.com</a> <i>&oacute;</i> <a href="mailto:mmgb@correo.azc.uam.mx">mmgb@correo.azc.uam.mx</a>.</font></p>     ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2"><i><sup>2</sup> Instituto Mexicano del Petr&oacute;leo. DIyP. Eje Central L&aacute;zaro C&aacute;rdenas Norte 152, M&eacute;xico 07730, D. F., M&eacute;xico. </i></font></p>     <p align="justify"><font face="verdana" size="2"><i><sup>3</sup> Centro de Ingenier&iacute;a y Desarrollo Industrial, Av. Playa Pie de la Cuesta No. 702. Desarrollo San Pablo, Quer&eacute;taro, Qro., 76130, M&eacute;xico. </i></font></p>     <p align="justify"><font face="verdana" size="2"><i><sup>4</sup> Universidad Aut&oacute;noma Metropolitana&#45;Iztapalapa. Av. San Rafael Atlixco 186, Col. Vicentina, Iztapalapa. Apdo. Postal 55&#45;534, M&eacute;xico 09340, D.F., M&eacute;xico.</i></font></p>     <p align="justify">&nbsp;</p>      <p align="justify"><font face="verdana" size="2">Received 27 November 2012.    <br> </font><font face="verdana" size="2">Accepted 13 October 2013.</font></p>     <p align="justify">&nbsp;</p>     <p align="justify"><font face="verdana" size="2"><b>Abstract</b></font></p>  	    <p align="justify"><font face="verdana" size="2">This work presents a heterogeneous dynamic model for the production of biodiesel using palmitic triglyceride and methanol as raw materials. Triglycerides are the main compounds in vegetable oils and when its total is beyond 97&#37;, it is possible to produce biodiesel by means of a basic transesterification employing sodium hydroxide as a catalyst. The model takes into account that triglycerides are not soluble in alcohol so two liquid phases exist in the batch reactor, causing the reaction to occur in the triglyceride&#45;methanol interphase. Results show that the model successfully calculates the concentration profile of triglyceride, alcohol and biodiesel in time as well as the intermediaries' products in the reactor. It also predicts concentration profiles at different temperatures in accordance to the Arrhenius' Law.</font></p>  	    <p align="justify"><font face="verdana" size="2"><b>Keywords:</b> biodiesel, kinetic modeling, transesterification, batch reactor, kinetic.</font></p>     ]]></body>
<body><![CDATA[<p align="justify">&nbsp;</p>      <p align="justify"><font face="verdana" size="2"><b>Resumen</b></font></p>  	    <p align="justify"><font face="verdana" size="2">Este trabajo presenta el desarrollo de un modelo din&aacute;mico para la producci&oacute;n de biodiesel utilizando como materias primas triglic&eacute;rido palm&iacute;tico y metanol. Los aceites vegetales se componen principalmente de triglic&eacute;ridos y cuando la concentraci&oacute;n de estos &uacute;ltimos es mayor al 97&#37;, se utiliza un catalizador b&aacute;sico para llevar a cabo la reacci&oacute;n de transesterificaci&oacute;n para obtener biodiesel. Este modelo considera que los triglic&eacute;ridos no son solubles en el metanol, por lo que se forman dos fases al colocar ambos en un reactor por lotes, lo cual provoca que la reacci&oacute;n se lleve a cabo &uacute;nicamente en la superficie de la gotas, esto es en la interfase metanol&#45;triglic&eacute;rido. Los resultados obtenidos con el modelo predicen de manera satisfactoria los perfiles de concentraci&oacute;n de triglic&eacute;ridos, alcohol y biodiesel en el tiempo, as&iacute; como la concentraci&oacute;n de los productos intermedios dentro del reactor. As&iacute; mismo predice la disminuci&oacute;n del tama&ntilde;o de las gotas y los perfiles de concentraci&oacute;n a diferentes temperaturas.</font></p>  	    <p align="justify"><font face="verdana" size="2"><b>Palabras clave:</b> biodiesel, modelado, transesterification, reactor por lotes, cin&eacute;tica.</font></p>  	    <p align="justify">&nbsp;</p> 	    <p align="justify"><font size="2" face="verdana"><a href="/pdf/rmiq/v13n1/v13n1a23.pdf" target="_blank">DESCARGAR ART&Iacute;CULO EN FORMATO PDF</a></font></p>     <p align="justify">&nbsp;</p>     <p align="justify"><font face="verdana" size="2"><b>References</b></font></p>  	    <!-- ref --><p align="justify"><font face="verdana" size="2">Ataya, F., Dub&eacute;, M. A. and Terman, M. (2007). Acid catalyzed transesterification of canola oil to bodiesel under single and two phase reactor conditions. <i>Energy</i> & <i>Fuels 21</i>, 2450&#45;2459.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8574033&pid=S1665-2738201400010002300001&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>  	    ]]></body>
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<ref-list>
<ref id="B1">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ataya]]></surname>
<given-names><![CDATA[F.]]></given-names>
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<name>
<surname><![CDATA[Dubé]]></surname>
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<name>
<surname><![CDATA[Terman]]></surname>
<given-names><![CDATA[M.]]></given-names>
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</person-group>
<article-title xml:lang="en"><![CDATA[Acid catalyzed transesterification of canola oil to bodiesel under single and two phase reactor conditions]]></article-title>
<source><![CDATA[Energy & Fuels]]></source>
<year>2007</year>
<volume>21</volume>
<page-range>2450-2459</page-range></nlm-citation>
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