<?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>1665-3521</journal-id>
<journal-title><![CDATA[Superficies y vacío]]></journal-title>
<abbrev-journal-title><![CDATA[Superf. vacío]]></abbrev-journal-title>
<issn>1665-3521</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Mexicana de Ciencia y Tecnología de Superficies y Materiales A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1665-35212009000300004</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Estimación de propiedades termodinámicas de los compuestos involucrados en la producción de biodiesel]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Aca-Aca]]></surname>
<given-names><![CDATA[M. G.]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Campos González]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sánchez-Daza]]></surname>
<given-names><![CDATA[O.]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[López-Arenas]]></surname>
<given-names><![CDATA[M. T.]]></given-names>
</name>
<xref ref-type="aff" rid="A02"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sales-Cruz]]></surname>
<given-names><![CDATA[A. M.]]></given-names>
</name>
<xref ref-type="aff" rid="A02"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Benemérita Universidad Autónoma de Puebla Facultad de Ingeniería Química ]]></institution>
<addr-line><![CDATA[Puebla ]]></addr-line>
<country>México</country>
</aff>
<aff id="A02">
<institution><![CDATA[,Universidad Autónoma Metropolitana Departamento de Procesos y Tecnología ]]></institution>
<addr-line><![CDATA[México D. F.]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>09</month>
<year>2009</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>09</month>
<year>2009</year>
</pub-date>
<volume>22</volume>
<numero>3</numero>
<fpage>15</fpage>
<lpage>19</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1665-35212009000300004&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1665-35212009000300004&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1665-35212009000300004&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[En el presente trabajo se estimaron las propiedades termodinámicas de los principales compuestos involucrados en la producción de biodiesel derivado del aceite de ricino (tales como ácidos grasos, triglicéridos y metil esteres), mediante métodos predictivos basados en contribución de grupos. De los métodos de contribución de grupos reportados en literatura, tres métodos fueron seleccionados para estimar las propiedades: Joback-Reid (JR), Constantinou-Gani (CG) y Marrero-Gani (MG), los cuales se encuentran disponibles en simuladores comerciales (tales como Aspen Plus e ICAS). Para elegir el método más exacto se compararon los valores de las propiedades estimadas con valores experimentales reportados en literatura. El método de Constantinou-Gani resultó ser el más cercano a la realidad con 7.06% promedio de error relativo.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[In the present work, the thermodynamic properties of main components involved in the biodiesel production derived from castor oil (such as fatty acids, tryacylglycerols and methyl esters) were estimated, by means of predictive methods based on group contribution. Among the group contribution methods reported in literature, three of them were selected to estimate the properties: Joback-Reid (JR), Constantinou-Gani (CG) and Marrero-Gani (MG), which are available in commercial simulators (such as Aspen Plus and ICAS). To choose the most accurate method, the values of the estimated properties were compared with experimental values reported in literature. The Constantinou-Gani method was the closest method to reality with 7.06% average relative error.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Contribución de grupos]]></kwd>
<kwd lng="es"><![CDATA[Estimación de propiedades termodinámicas]]></kwd>
<kwd lng="es"><![CDATA[Compuestos del biodiesel]]></kwd>
<kwd lng="en"><![CDATA[Group contribution]]></kwd>
<kwd lng="en"><![CDATA[Thermodynamical]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[  	    <p align="center"><font face="verdana" size="4"><b>Estimaci&oacute;n de propiedades termodin&aacute;micas de los compuestos involucrados en la producci&oacute;n de biodiesel</b></font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="center"><font face="verdana" size="2"><b>M. G. Aca&#45;Aca<sup>a1</sup>, E. Campos Gonz&aacute;lez<sup>1</sup>, O. S&aacute;nchez&#45;Daza<sup>1</sup>, M. T. L&oacute;pez&#45;Arenas<sup>2</sup>, A. M. Sales&#45;Cruz<sup>2</sup></b></font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="justify"><font face="verdana" size="2"><sup><i>1</i></sup> <i>Facultad de Ingenier&iacute;a Qu&iacute;mica, Benem&eacute;rita Universidad Aut&oacute;noma de Puebla Avenida San Claudio y 18 sur s/n CU, Edificio 149, Puebla 72570,</i> <i>M&eacute;xico.</i> <sup>a</sup><a href="mailto:gloryaca@yahoo.com.mx">gloryaca@yahoo.com.mx</a></font></p>  	    <p align="justify"><font face="verdana" size="2"><i><sup>2</sup> Departamento de Procesos y Tecnolog&iacute;a, Universidad Aut&oacute;noma Metropolitana&#45;Cuajimalpa (UAMC) Artificios No. 40, 2&deg; Piso, Col. Hidalgo, M&eacute;xico, D. F. 01120, 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">Recibido: 30 de abril de 2009.    <br> 	Aceptado: 17 de junio de 2009.</font></p>  	    ]]></body>
<body><![CDATA[<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">En el presente trabajo se estimaron las propiedades termodin&aacute;micas de los principales compuestos involucrados en la producci&oacute;n de biodiesel derivado del aceite de ricino (tales como &aacute;cidos grasos, triglic&eacute;ridos y metil esteres), mediante m&eacute;todos predictivos basados en contribuci&oacute;n de grupos. De los m&eacute;todos de contribuci&oacute;n de grupos reportados en literatura, tres m&eacute;todos fueron seleccionados para estimar las propiedades: Joback&#45;Reid (JR), Constantinou&#45;Gani (CG) y Marrero&#45;Gani (MG), los cuales se encuentran disponibles en simuladores comerciales (tales como Aspen Plus e ICAS). Para elegir el m&eacute;todo m&aacute;s exacto se compararon los valores de las propiedades estimadas con valores experimentales reportados en literatura. El m&eacute;todo de Constantinou&#45;Gani result&oacute; ser el m&aacute;s cercano a la realidad con 7.06% promedio de error relativo.</font></p>  	    <p align="justify"><font face="verdana" size="2"><b>Palabras clave:</b> Contribuci&oacute;n de grupos; Estimaci&oacute;n de propiedades termodin&aacute;micas; Compuestos del biodiesel.</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">In the present work, the thermodynamic properties of main components involved in the biodiesel production derived from castor oil (such as fatty acids, tryacylglycerols and methyl esters) were estimated, by means of predictive methods based on group contribution. Among the group contribution methods reported in literature, three of them were selected to estimate the properties: Joback&#45;Reid (JR), Constantinou&#45;Gani (CG) and Marrero&#45;Gani (MG), which are available in commercial simulators (such as Aspen Plus and ICAS). To choose the most accurate method, the values of the estimated properties were compared with experimental values reported in literature. The Constantinou&#45;Gani method was the closest method to reality with 7.06% average relative error.</font></p>  	    <p align="justify"><font face="verdana" size="2"><b>Keywords:</b> Group contribution; Thermodynamical.</font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="justify"><font face="verdana" size="2"><a href="/pdf/sv/v22n3/v22n3a4.pdf" target="_blank">DESCARGAR ART&Iacute;CULO EN FORMATO PDF</a></font></p>  	    ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="justify"><font face="verdana" size="2"><b>Agradecimientos</b></font></p>  	    <p align="justify"><font face="verdana" size="2">Agradecemos al Profesor Rafiqul Gani (CAPEC, Technical University of Denmark) por proporcionarnos el software ICAS, el cual fue utilizado para generar parte de los resultados de este trabajo.</font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="justify"><font face="verdana" size="2"><b>Referencias</b></font></p>  	    <!-- ref --><p align="justify"><font face="verdana" size="2">&#91;1&#93;. L. D. Clements, Blending Rules formulating biodiesel fuel, University of Nebraska, Lincoln, Lincoln, (1996).    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=9688910&pid=S1665-3521200900030000400001&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">&#91;2&#93;. SENER, Potenciales y Viabilidad del Uso de Bioetanol y Biodiesel para el Transporte en M&eacute;xico, Noviembre (2006).    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=9688912&pid=S1665-3521200900030000400002&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">&#91;3&#93;. K. Joback, and R. Reid, Chem. Eng. Comm. <b>57</b>, 233&#45;243 (1987).    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=9688914&pid=S1665-3521200900030000400003&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">&#91;4&#93;. L. Constantinou, R. Gani, AICHE Journal <b>40</b>(10), 1697&#45;1709 (1994).    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=9688916&pid=S1665-3521200900030000400004&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">&#91;5&#93;. J. Marrero, R. Gani, Fluid Phase Equilibria, <b>183</b>(0), 183&#45;208 (2001).    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=9688918&pid=S1665-3521200900030000400005&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">&#91;6&#93;. J.N. Scenna, Procesos Qu&iacute;micos Modelado, Simulaci&oacute;n y Optimizaci&oacute;n de Procesos Qu&iacute;micos, Ed. Universidad Tecn&oacute;logica Nacional (1999).    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=9688920&pid=S1665-3521200900030000400006&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">&#91;7&#93;. Aspen Plus, <a href="http://www.aspentech.com" target="_blank">www.aspentech.com</a> (2009)for</font>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=9688922&pid=S1665-3521200900030000400007&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><!-- ref --><p align="justify"><font face="verdana" size="2">&#91;8&#93;. ICAS, <a href="http://www.capec.kt.dtu.dk/Software/ICAS&#45;and&#45;its&#45;Tools" target="_blank">www.capec.kt.dtu.dk/Software/ICAS&#45;and&#45;its&#45;Tools</a>, CAPEC &#45; Technical University of Denmark (2009).    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=9688923&pid=S1665-3521200900030000400008&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>  	    ]]></body>
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