<?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>1665-1456</journal-id>
<journal-title><![CDATA[Biotecnia]]></journal-title>
<abbrev-journal-title><![CDATA[Biotecnia]]></abbrev-journal-title>
<issn>1665-1456</issn>
<publisher>
<publisher-name><![CDATA[Universidad de Sonora, División de Ciencias Biológicas y de la Salud]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1665-14562022000100107</article-id>
<article-id pub-id-type="doi">10.18633/biotecnia.v24i1.1537</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Influencia de la separación de agua residual porcina en fracciones sólida y líquida, en la producción de metano con Iodo anaerobio granular y disperso]]></article-title>
<article-title xml:lang="en"><![CDATA[Influence of swine wastewater separation into solid and liquid fractions, on methane production with granular and disperse sludge]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Valdez-Vázquez]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Bobadilla-Vidrio]]></surname>
<given-names><![CDATA[YG]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[García-Reyes]]></surname>
<given-names><![CDATA[RB]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Martínez-Rodríguez]]></surname>
<given-names><![CDATA[CM]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Alvarez-Valencia]]></surname>
<given-names><![CDATA[LH]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Tecnológico de Sonora Departamento de Biotecnología y Ciencias Alimentarias ]]></institution>
<addr-line><![CDATA[Cd. Obregón Sonora]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma de Nuevo León Facultad de Ciencias Químicas ]]></institution>
<addr-line><![CDATA[San Nicolás de los Garza Nuevo León]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Autónoma de San Luis Potosí Facultad de Ciencias ]]></institution>
<addr-line><![CDATA[San Luis Potosí SLP]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Instituto Tecnológico de Sonora Departamento de Ciencias Agronómicas y Veterinarias ]]></institution>
<addr-line><![CDATA[Cd. Obregón Sonora]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>04</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>04</month>
<year>2022</year>
</pub-date>
<volume>24</volume>
<numero>1</numero>
<fpage>107</fpage>
<lpage>115</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1665-14562022000100107&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1665-14562022000100107&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1665-14562022000100107&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN Las estrategias actuales de tratamiento de efluentes porcinos en México son en muchos casos poco eficientes, que se traduce en la descarga de aguas tratadas parcialmente y no tratadas, así como el desaprovechamiento de un recurso energético. El objetivo de este estudio fue evaluar el impacto de la separación sólida-líquida del agua residual porcina sobre la producción de metano, utilizando lodo granular y lodo disperso, bajo tres concentraciones. La concentración de DQO en el efluente crudo (EC) fue de 13,640 mg/L, con 69 % correspondiente a la fracción sólida (FS) y el resto para la fracción líquida (FL). Los resultados indican que los cultivos con la FS produjeron una mayor cantidad de metano, incrementándose 1.47, 1.31 y 1.22 veces en comparación al EC, para las concentraciones de 3, 6 y 9 g SSV/L de lodo disperso. La estrategia de separación sólida-líquida resultó en incrementos en la producción de metano, evidenciado porque la suma del metano acumulado por la FS y FL fue entre 2.14 y 2.28 veces mayor que la cantidad obtenida por el EC. La aplicación de procesos anaerobios para tratar residuos sólidos y líquidos permitirá recuperar de manera más eficiente la energía a partir de la transformación de la materia orgánica a metano.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT In most cases, the current strategies to treat swine effluents in Mexico are not efficient, resulting in the discharge of partially treated wastewater, wasting an energy resource. This study aimed to evaluate the impact of the solid-liquid separation of swine wastewater on methane production using granular (GS) and disperse sludge (DS), under three concentrations. The COD concentration in the raw effluent (RE) was 13,640 mg/L, which corresponds up to 69 % to the solid fraction (SF), and the remaining to the liquid fraction (LF). The results indicate that the cultures with the SF produced the higher cumulative methane, increasing 1.47-, 1.31-, and 1.22-times in retaliation to the RE, at 3, 6, and 9 g VSS/L of DS. The solid-liquid separation strategy resulted in a higher methane production, evidenced by the amount of methane obtained by the SF and LF, which was, respectively, 2.14- and 2.28-times higher than the obtained by the RE. The application of anaerobic processes to treat solid and liquid wastes will allow to recovery efficiently the energy from the transformation of organic matter into methane.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[agua residual porcina]]></kwd>
<kwd lng="es"><![CDATA[metano]]></kwd>
<kwd lng="es"><![CDATA[separación de sólidos]]></kwd>
<kwd lng="es"><![CDATA[lodo granular]]></kwd>
<kwd lng="es"><![CDATA[lodo disperso]]></kwd>
<kwd lng="en"><![CDATA[swine wastewater]]></kwd>
<kwd lng="en"><![CDATA[methane]]></kwd>
<kwd lng="en"><![CDATA[solid separation]]></kwd>
<kwd lng="en"><![CDATA[granular sludge]]></kwd>
<kwd lng="en"><![CDATA[disperse sludge]]></kwd>
</kwd-group>
</article-meta>
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