<?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>1909-2474</journal-id>
<journal-title><![CDATA[Luna Azul]]></journal-title>
<abbrev-journal-title><![CDATA[Luna Azul]]></abbrev-journal-title>
<issn>1909-2474</issn>
<publisher>
<publisher-name><![CDATA[Universidad de Caldas]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1909-24742026000200104</article-id>
<article-id pub-id-type="doi">10.17151/luaz.2026.63.6</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Sucesión del perifiton e identificación de metabolitos como indicadores de degradación orgánica en una planta de tratamiento de aguas residuales.]]></article-title>
<article-title xml:lang="en"><![CDATA[Succession of Periphyton and Identification of Metabolites as Indicators of Organic Degradation in a Wastewater Treatment Plant.]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Blanquicet]]></surname>
<given-names><![CDATA[Yirley Angélica Rincón]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Peña]]></surname>
<given-names><![CDATA[José Ismael Rojas]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[García]]></surname>
<given-names><![CDATA[Cristian David Ojeda]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Muñoz]]></surname>
<given-names><![CDATA[Yair Leandro Zapata]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González]]></surname>
<given-names><![CDATA[Juan Manuel Trujillo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mora]]></surname>
<given-names><![CDATA[Marco Aurelio Torres]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de los Llanos  ]]></institution>
<addr-line><![CDATA[Villavicencio Meta]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad de los Llanos  ]]></institution>
<addr-line><![CDATA[Villavicencio Meta]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad de los Llanos  ]]></institution>
<addr-line><![CDATA[Villavicencio Meta]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad de los Llanos  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Universidad de los Llanos  ]]></institution>
<addr-line><![CDATA[Villavicencio Meta]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af6">
<institution><![CDATA[,Universidad de los Llanos  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2026</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2026</year>
</pub-date>
<numero>63</numero>
<fpage>104</fpage>
<lpage>127</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S1909-24742026000200104&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S1909-24742026000200104&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S1909-24742026000200104&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen. Las plantas de tratamiento de agua residual están expuestas a factores físicos y químicos que permiten el desarrollo de comunidades como el perifiton, gracias a los nutrientes presentes en el agua residual, importantes por su capacidad para absorber y transformar contaminantes. Este estudio permitió analizar la composición y sucesión de la comunidad perifítica en una planta de tratamiento de agua residual (PTAR) para evaluar la influencia de los factores fisicoquímicos en su desarrollo e identificar metabolitos clave de interés biológico en biorremediación. Para ello se instalaron sustratos artificiales en los biodigestores de una PTAR universitaria para monitorear la colonización durante 72 horas. Las muestras recolectadas se procesaron mediante técnicas microscópicas, análisis de cromatografía de gases y análisis de parámetros fisicoquímicos del agua. Los resultados obtenidos evidenciaron una sucesión con formación de biopelículas a las seis horas y consolidación de una comunidad perifítica a las 72 horas, evidenciando condiciones eutrofizadas que aceleran la sucesión perifítica dominada por cianobacterias, algas verdes, protozoos e invertebrados. Además, el análisis cromatográfico identificó metabolitos propios de procesos de descomposición que participan en el desarrollo del perifiton como el 3-metil-indol y el p-cresol. Estos resultados sumados a los valores reportados en las concentraciones de oxígeno disuelto, fósforos, nitritos y nitratos son indicativos de una intensa actividad microbiana, lo que demuestra que esta comunidad en su desarrollo dentro del sistema de la PTAR utiliza los compuestos contaminantes como fuente primaria para su establecimiento.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract. Wastewater treatment plants are exposed to physical and chemical factors that allow communities such as periphyton to develop, thanks to the nutrients present in the wastewater, which are important for their ability to absorb and transform contaminants. This study analyzed the composition and succession of the periphyton community at a wastewater treatment plant (WWTP) to evaluate the influence of physicochemical factors on its development and to identify key metabolites of biological interest in bioremediation. To this end, artificial substrates were installed in the biodigesters of a university-affiliated WWTP to monitor colonization over a 72-hour period. The collected samples were processed using microscopic techniques, gas chromatography analysis, and analysis of the water&#8217;s physicochemical parameters. The results showed a succession process with biofilm formation at six hours and the establishment of a periphytic community at 72 hours, indicating eutrophic conditions that accelerate periphytic succession dominated by cyanobacteria, green algae, protozoa, and invertebrates. In addition, chromatographic analysis identified metabolites characteristic of decomposition processes involved in the development of periphyton, such as 3-methylindole and p-cresol. These results, combined with the reported values for dissolved oxygen, phosphorus, nitrites, and nitrates, are indicative of intense microbial activity, demonstrating that this community, as it develops within the WWTP system, uses pollutants as its primary source for establishment.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[agua residual]]></kwd>
<kwd lng="es"><![CDATA[calidad de agua]]></kwd>
<kwd lng="es"><![CDATA[eutrofización]]></kwd>
<kwd lng="es"><![CDATA[metabolitos]]></kwd>
<kwd lng="es"><![CDATA[sucesión ecológica]]></kwd>
<kwd lng="en"><![CDATA[wastewater]]></kwd>
<kwd lng="en"><![CDATA[water quality]]></kwd>
<kwd lng="en"><![CDATA[eutrophication]]></kwd>
<kwd lng="en"><![CDATA[metabolites]]></kwd>
<kwd lng="en"><![CDATA[ecological succession]]></kwd>
</kwd-group>
</article-meta>
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