<?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>2007-9753</journal-id>
<journal-title><![CDATA[RIIIT. Revista internacional de investigación e innovación tecnológica]]></journal-title>
<abbrev-journal-title><![CDATA[RIIIT. Rev. int. investig. innov. tecnol.]]></abbrev-journal-title>
<issn>2007-9753</issn>
<publisher>
<publisher-name><![CDATA[Universidad Autónoma de Coahuila]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-97532024000100018</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Anaerobic-aerobic sequential biofilters packed with polyurethane/polypyrrole-co-polyaniline and constructed wetland for municipal wastewater treatment]]></article-title>
<article-title xml:lang="es"><![CDATA[Biofiltros secuenciales anaerobio-aerobio empacados con poliuretano/polipirrol-co-polianilina y humedal artificial para el tratamiento de aguas residuales municipales]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Antonio-Carmona]]></surname>
<given-names><![CDATA[I.D.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ovando-Medina]]></surname>
<given-names><![CDATA[V.M.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rodríguez-de la Garza]]></surname>
<given-names><![CDATA[J.A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Martínez-Amador]]></surname>
<given-names><![CDATA[S.Y.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma Agraria Antonio Narro Departamento de Botánica ]]></institution>
<addr-line><![CDATA[Saltillo Coahuila]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma de San Luis Potosí Coordinación Académica Región Altiplano Ingeniería Química]]></institution>
<addr-line><![CDATA[Matehuala S.L.P.]]></addr-line>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Autónoma de Coahuila Facultad de Ciencias Químicas Departamento de Biotecnología]]></institution>
<addr-line><![CDATA[Saltillo Coahuila]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>02</month>
<year>2024</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>02</month>
<year>2024</year>
</pub-date>
<volume>11</volume>
<numero>66</numero>
<fpage>18</fpage>
<lpage>31</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-97532024000100018&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-97532024000100018&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-97532024000100018&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Due to the growing demand and the current water problems, efficient and economical wastewater treatment systems are required to promote the reuse of this resource. The objective of this work was to evaluate the performance of a sequential system consisting of two anaerobic-aerobic biofilters and a constructed wetland at different hydraulic retention times (HRT) in treating municipal wastewater (MWW). The biofilters were packed with polyurethane/polypyrrole-co-polyaniline composites as support for biofilm formation. The constructed wetland contained tezontle as substratum for Canna indica plants. The parameters analyzed were chemical oxygen demand (COD), biochemical oxygen demand (BOD5), fecal coliforms (FC), helminth eggs (HE) and total solids (TS). It was observed that the removal of these parameters increased in direct proportion to the HRT, achieving up to 93% removal efficiency for COD, 99% for BOD5, 28% removal in TS, FC decreased from 1×106± 1 to 1×101± 1 MPN/100 mL and HEs decreased from being uncountable to 3 ± 3 HE/L, operating at a HRT of 9.9 days.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Debido a la creciente demanda y a la problemática del agua que actualmente existe, se requieren sistemas de tratamiento de aguas residuales eficientes y económicos para fomentar el reúso de este vital líquido. Este trabajo tuvo como objetivo evaluar el desempeño de un sistema secuencial consistente de dos biofiltros anaerobio-aerobio y un humedal artificial a diferentes tiempos de retención hidráulica (TRH) en el tratamiento de agua residual municipal (ARM). Los biofiltros fueron empacados con compósitos de poliuretano/polipirrol-co-polianilina como soporte para la formación de biopelícula. El humedal artificial contenía tezontle como soporte para las plantas de Canna indica. Los parámetros analizados fueron la demanda química de oxígeno (DQO), la demanda bioquímica de oxígeno (DBO5), las coliformes fecales (CF), los huevos de helmintos (HH) y los sólidos totales (ST). Se observó que la remoción de estos parámetros se incrementó en proporción directa al TRH logrando hasta un 93% de eficiencia de remoción para la DQO, un 99% para la DBO, 28% de remoción en los ST, las CF disminuyeron de 1×106±1 hasta 1×101±1 MPN/100 mL y los HH de incontables a 3 ± 3 h/L, operando a un TRH de 9.9 días.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[biofilter]]></kwd>
<kwd lng="en"><![CDATA[composites]]></kwd>
<kwd lng="en"><![CDATA[Canna indica]]></kwd>
<kwd lng="en"><![CDATA[constructed wetland]]></kwd>
<kwd lng="en"><![CDATA[municipal wastewater treatment]]></kwd>
<kwd lng="es"><![CDATA[biofiltro]]></kwd>
<kwd lng="es"><![CDATA[compósitos]]></kwd>
<kwd lng="es"><![CDATA[Canna indica]]></kwd>
<kwd lng="es"><![CDATA[humedal artificial]]></kwd>
<kwd lng="es"><![CDATA[tratamiento de agua residual municipal]]></kwd>
</kwd-group>
</article-meta>
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