<?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>0122-3461</journal-id>
<journal-title><![CDATA[Ingeniería y Desarrollo]]></journal-title>
<abbrev-journal-title><![CDATA[Ing. Desarro.]]></abbrev-journal-title>
<issn>0122-3461</issn>
<publisher>
<publisher-name><![CDATA[Fundación Universidad del Norte]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0122-34612025000200220</article-id>
<article-id pub-id-type="doi">10.14482/inde.43.02.245.125</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Caracterización de residuos de espuma rígida de poliuretano como herramienta para la evaluación de su aprovechamiento]]></article-title>
<article-title xml:lang="en"><![CDATA[Characterization of rigid polyuréthanne foam waste as a tool to evaluate its use]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[LOPEZ-RODRIGUEZ]]></surname>
<given-names><![CDATA[ISABELLA F.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[TORRES-AGREDO]]></surname>
<given-names><![CDATA[JANNETH]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[DÍAZ-ROSERO]]></surname>
<given-names><![CDATA[JHERSON &#1045;.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional de Colombia Facultad de Ingeniería y Administración ]]></institution>
<addr-line><![CDATA[ Valle del Cauca]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Nacional de Colombia Facultad de Ingeniería y Administración ]]></institution>
<addr-line><![CDATA[ Valle del Cauca]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Centro Nacional de Asistencia Técnica a la Industria  ]]></institution>
<addr-line><![CDATA[ Valle del Cauca]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2025</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2025</year>
</pub-date>
<volume>43</volume>
<numero>2</numero>
<fpage>220</fpage>
<lpage>237</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0122-34612025000200220&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0122-34612025000200220&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0122-34612025000200220&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Este trabajo expone la caracterización física, química, estructural y ambiental de residuos de espuma rígida de poliuretano (PUR), obtenidos de diferentes industrias de la región. Se seleccionaron 4 muestras para el estudio, a las cuales se les determinó la densidad, absorción de agua y composición química a través de análisis elemental y espectroscopia de rayos X (EDX). Además, se analizó su composición estructural a través de las técnicas de espectroscopía de Infrarrojo por transformada de Fourier (FTIR), análisis por termogravimetría diferencial (DTG), microscopía confocal y microscopia electrónica de barrido (SEM). También se aplicaron ensayos de carácter ambiental, tales como Toxicity characteristic leaching procedure (TCLP) y toxicidad aguda en Daphnia pulex. Los resultados mostraron la presencia de los grupos funcionales usuales en la composición de una espuma de poliuretano rígida; sin embargo, se encontraron compuestos como Cl, Ti y anillos de benceno, que corresponden a la presencia de aditivos. Adicionalmente, a través de los ensayos ambientales aplicados se encontró la no toxicidad en las muestras. Se recomiendan estudios posteriores de emisión de gases de estos residuos cuando son sometidos a procesos térmicos.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract This work presents the physical, chemical, structural and, environmental characterization of rigid polyurethane foam (PUR) waste, from different industries in the region. Four samples were selected for the study, which included density, water absorption, and chemical composition through elemental analysis and X-ray spectroscopy (EDX). In addition, its structural composition was analyzed through the techniques of Fourier Transform Infrared spectroscopy (FTIR), Differential Thermogravimetry Analysis (DTG), Confocal microscopy, and Scanning Electron Microscopy (SEM). Environmental tests such as Toxicity characteristic leaching procedure (TCLP) and acute toxicity in Daphnia Pulex were also applied. The results showed the presence of the usual functional groups in the composition of a rigid polyurethane foam; however, Cl, Ti, and benzene rings were found, which correspond to the presence of additives. Furthermore, through the applied environmental tests, non-toxicity was found in the samples. Subsequent studies of gas emissions from these wastes are recommended when they are subjected to thermal processes.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[aprovechamiento de residuos]]></kwd>
<kwd lng="es"><![CDATA[residuo de espuma rígida de poliuretano]]></kwd>
<kwd lng="es"><![CDATA[residuos industriales]]></kwd>
<kwd lng="es"><![CDATA[técnicas de caracterización]]></kwd>
<kwd lng="en"><![CDATA[characterization techniques]]></kwd>
<kwd lng="en"><![CDATA[industrial waste]]></kwd>
<kwd lng="en"><![CDATA[rigid polyurethane foam waste]]></kwd>
<kwd lng="en"><![CDATA[waste reuse]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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