<?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>S0121-750X2023000300201</article-id>
<article-id pub-id-type="doi">10.14483/23448393.19845</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Characterization of Microbubbles Generated in a Venturi Tube via Image Processing: Effect of Operating Parameters]]></article-title>
<article-title xml:lang="es"><![CDATA[Caracterización de microburbujas generadas en un tubo Venturi mediante procesamiento de imágenes: efecto de los parámetros operativos]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mera-Campo]]></surname>
<given-names><![CDATA[Jhonatan Stiven]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Muñoz-Alegría]]></surname>
<given-names><![CDATA[Jeimmy Adriana]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Flórez-Marulanda]]></surname>
<given-names><![CDATA[Juan Fernando]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Muñoz-España]]></surname>
<given-names><![CDATA[Elena]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad del Cauca Department of Physics ]]></institution>
<addr-line><![CDATA[Popayán ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad del Cauca Department of Electronics, Instrumentation, and Control ]]></institution>
<addr-line><![CDATA[Popayán ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad del Cauca Department of Electronics, Instrumentation, and Control ]]></institution>
<addr-line><![CDATA[Popayán ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad del Cauca Department of Electronics, Instrumentation, and Control ]]></institution>
<addr-line><![CDATA[Popayán ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2023</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2023</year>
</pub-date>
<volume>28</volume>
<numero>3</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0121-750X2023000300201&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0121-750X2023000300201&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0121-750X2023000300201&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Context:  This research developed a dissolved air flotation system using a Venturi tube to produce microbubbles. The Venturi tube replaces the saturation tank and the pressure-reducing valve of conventional systems.  Method:  The system has both suction and injection air inlets, regulates the recirculation flow of the liquid to the tank, and provides a high hydraulic load in a reduced size. Counting and measuring the microbubbles produced via digital image processing helps to characterize the system&#8217;s performance.  Results:  The system with air suction produces smaller bubbles than that with air injection. A higher liquid recirculation pressure produces more bubbles and reduces their size in the case of air suction.  Conclusions:  In air injection, the change in flow rate influences the size of the microbubbles. Air injection and recirculation pressure do not influence the number of bubbles generated.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Contexto:  Esta investigación desarrolló un sistema de flotación por aire disuelto utilizando un tubo Venturi para producir microburbujas. El tubo Venturi sustituye el tanque de saturación y la válvula reductora de presión de los sistemas convencionales.  Método:  El sistema tiene entradas de aire tanto por aspiración como por inyección, regula el flujo de recirculación del líquido al tanque y proporciona una alta carga hidráulica en un tamaño reducido. El conteo y la medición por procesamiento digital de imágenes de las microburbujas producidas ayuda a caracterizar el desempeño del sistema.  Resultados:  El sistema de succión de aire produce burbujas más pequeñas que el de inyección de aire. Una mayor presión de recirculación del líquido produce más burbujas y reduce su tamaño en el caso de la succión de aire.  Conclusiones:  En la inyección de aire, el cambio de caudal influye en el tamaño de las microburbujas. La inyección de aire y la presión de recirculación no influyen en el número de burbujas generadas.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[dissolved air flotation]]></kwd>
<kwd lng="en"><![CDATA[microbubble]]></kwd>
<kwd lng="en"><![CDATA[Venturi tube]]></kwd>
<kwd lng="en"><![CDATA[wastewater Treatment.]]></kwd>
<kwd lng="es"><![CDATA[flotación por aire disuelto]]></kwd>
<kwd lng="es"><![CDATA[microburbujas]]></kwd>
<kwd lng="es"><![CDATA[tubo Venturi]]></kwd>
<kwd lng="es"><![CDATA[tratamiento de aguas residuales.]]></kwd>
</kwd-group>
</article-meta>
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