<?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>0121-750X</journal-id>
<journal-title><![CDATA[Ingeniería]]></journal-title>
<abbrev-journal-title><![CDATA[ing.]]></abbrev-journal-title>
<issn>0121-750X</issn>
<publisher>
<publisher-name><![CDATA[Universidad Distrital Francisco José de Caldas]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0121-750X2023000400207</article-id>
<article-id pub-id-type="doi">10.14483/23448393.19053</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Diseño técnico de un sistema de cuantificación de metano portable y de bajo costo]]></article-title>
<article-title xml:lang="en"><![CDATA[Technical Design of a Low-Cost, Portable Methane Quantification System]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Tovar-Sánchez]]></surname>
<given-names><![CDATA[Juan A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Arias-Molina]]></surname>
<given-names><![CDATA[Juan F.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Milquez-Sanabria]]></surname>
<given-names><![CDATA[Harvey A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mayorga-Castellanos]]></surname>
<given-names><![CDATA[Manuel A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Fundación Universidad de América  ]]></institution>
<addr-line><![CDATA[Bogotá ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Fundación Universidad de América  ]]></institution>
<addr-line><![CDATA[Bogotá ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Fundación Universidad de América  ]]></institution>
<addr-line><![CDATA[Bogotá ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad ECCI  ]]></institution>
<addr-line><![CDATA[Bogotá ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>04</month>
<year>2023</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>04</month>
<year>2023</year>
</pub-date>
<volume>28</volume>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0121-750X2023000400207&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0121-750X2023000400207&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0121-750X2023000400207&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Contexto:  A partir de un análisis del desarrollo de la tecnología en biodigestores, se observó un problema recurrente en la cuantificación rigurosa del metano. Una revisión bibliográfica reveló sistemas poco eficientes o de costos elevados. Este proyecto plantea un sistema accesible y eficaz que busca contribuir a proyectos académicos y de investigación afines.  Método:  La cuantificación de metano se realiza mediante un sensor de la serie MQ-4 acoplado a una cápsula, creando un medio parcialmente cerrado en el que se inyecta, por medio de una jeringa, una dilución de gases de muestra de metano con aire del ambiente, lo cual amplía el rango de medición del sensor.  Resultados:  Se elaboró una curva de calibración, ampliando el rango de medición de 0,02-1 % de concentración a 10-80 %v/v, con una varianza de ± 5 %.  Conclusiones:  Se desarrolló un prototipo de cuantificación de metano eficiente y accesible para uso académico y de investigación. Esto se complementa con una guía para replicar el proceso.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Context:  Based on an analysis of the development of biodigester technology, a recurring problem with the rigorous quantification of methane was observed. A bibliographical review evidenced systems that are inefficient or have high costs. This work proposes an accessible and effective system that seeks to contribute to related academic and research projects.  Method:  Methane quantification is performed via an MQ-4 series sensor coupled with a capsule, creating a partially closed medium in which a dilution of sample gases and ambient air is injected by using a syringe, thus extending the measurement range of the sensor.  Results:  A calibration curve was elaborated, extending the measurement range from 0,02-1% concentration to 10-80%v/v, with a variance of ± 5%.  Conclusions:  An efficient and accessible prototype for methane quantification for academic and research purposes was developed. A guide for replicating the process is added as a complement.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[biogás]]></kwd>
<kwd lng="es"><![CDATA[biodigestor]]></kwd>
<kwd lng="es"><![CDATA[metano]]></kwd>
<kwd lng="es"><![CDATA[sensor]]></kwd>
<kwd lng="es"><![CDATA[prototipo]]></kwd>
<kwd lng="es"><![CDATA[cuantificación]]></kwd>
<kwd lng="es"><![CDATA[Arduino.]]></kwd>
<kwd lng="en"><![CDATA[biogas]]></kwd>
<kwd lng="en"><![CDATA[biodigester]]></kwd>
<kwd lng="en"><![CDATA[methane]]></kwd>
<kwd lng="en"><![CDATA[sensor]]></kwd>
<kwd lng="en"><![CDATA[prototype]]></kwd>
<kwd lng="en"><![CDATA[quantification]]></kwd>
<kwd lng="en"><![CDATA[Arduino.]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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