<?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>2007-9753</journal-id>
<journal-title><![CDATA[RIIIT. Revista internacional de investigación e innovación tecnológica]]></journal-title>
<abbrev-journal-title><![CDATA[RIIIT. Rev. int. investig. innov. tecnol.]]></abbrev-journal-title>
<issn>2007-9753</issn>
<publisher>
<publisher-name><![CDATA[Universidad Autónoma de Coahuila]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-97532018000300001</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Eliminación de humedad en aceites minerales aislantes mediante un residuo resinoso de Opuntia ficus-indica]]></article-title>
<article-title xml:lang="en"><![CDATA[Moisture removal in mineral insulating oils by a resinous residue of Opuntia ficus-indica]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Delgado-Arroyo]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[León-Silva]]></surname>
<given-names><![CDATA[U]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Saldívar-Guerrero]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Huacuz-Villamar]]></surname>
<given-names><![CDATA[J.M]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Nacional de Electricidad y Energías Limpias  ]]></institution>
<addr-line><![CDATA[Cuernavaca Morelos]]></addr-line>
<country>México</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Centro de Investigación en Química Aplicada  ]]></institution>
<addr-line><![CDATA[Saltillo Coahuila]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2018</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2018</year>
</pub-date>
<volume>6</volume>
<numero>33</numero>
<fpage>0</fpage>
<lpage>0</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-97532018000300001&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-97532018000300001&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-97532018000300001&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Se investigó la factibilidad de aplicación de un residuo resinoso (RR) encontrado en pencas de Opuntia ficus-indica para la eliminación de humedad en aceites minerales aislantes. El RR se caracterizó fisicoquímicamente mediante espectroscopia de infrarrojo por transformadas de Fourier (FT-IR), análisis termogravimétrico (TGA) y pruebas de solubilidad y absorción. Además, el aceite mineral aislante utilizado en este trabajo se caracterizó mediante una titulación Karl Fischer y pruebas de rigidez dieléctrica. Los resultados de FT-IR indicaron la presencia de grupos funcionales de tipo O-H, C=O y C-H principalmente. El RR fue insoluble en diversos disolventes orgánicos y agua destilada. De acuerdo con los resultados de TGA, la muestra de RR contiene aproximadamente 9 % de humedad, 73 % de componentes orgánicos y aproximadamente 18 % de componentes residuales. El RR mostró una alta capacidad de absorción y retención de humedad. El aceite mineral aumentó su rigidez dieléctrica después del proceso de secado. El RR de Opuntia ficus-indica es factible para su aplicación en la eliminación de la humedad (en-línea) en el aceite mineral de transformadores eléctricos.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The feasibility of application of a resinous residue (RR) found in Opuntia ficus-indica leaves for the elimination of moisture in mineral insulating oils was investigated. The RR was characterized physicochemically by infrared Fourier transform spectroscopy (FT-IR), thermogravimetric analysis (TGA) and solubility and absorption tests. In addition, the mineral insulating oil used in this work was characterized by a Karl Fischer titration and dielectric strength tests. The results of FT-IR indicated the presence of functional groups of type O-H, C=O and C-H mainly. The RR was insoluble in various organic solvents and distilled water. According to the TGA results, the RR sample contains approximately 9 % moisture, 73 % organic components and approximately 18 % residual components. The RR showed a high absorption capacity and moisture retention. The mineral oil increased its dielectric strength after the drying process. The RR of Opuntia ficus-indica is feasible for its application in the removal of moisture (on-line) in the mineral oil of electric transformers.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Absorción]]></kwd>
<kwd lng="es"><![CDATA[análisis termogravimétrico]]></kwd>
<kwd lng="es"><![CDATA[espectroscopia FT-IR]]></kwd>
<kwd lng="es"><![CDATA[Karl Fischer]]></kwd>
<kwd lng="es"><![CDATA[rigidez dieléctrica]]></kwd>
<kwd lng="en"><![CDATA[Absorption]]></kwd>
<kwd lng="en"><![CDATA[dielectric strength]]></kwd>
<kwd lng="en"><![CDATA[FT-IR spectroscopy]]></kwd>
<kwd lng="en"><![CDATA[Karl Fischer]]></kwd>
<kwd lng="en"><![CDATA[thermogravimetric analysis]]></kwd>
</kwd-group>
</article-meta>
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