<?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>0120-6230</journal-id>
<journal-title><![CDATA[Revista Facultad de Ingeniería Universidad de Antioquia]]></journal-title>
<abbrev-journal-title><![CDATA[Rev.fac.ing.univ. Antioquia]]></abbrev-journal-title>
<issn>0120-6230</issn>
<publisher>
<publisher-name><![CDATA[Facultad de Ingeniería, Universidad de Antioquia]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0120-62302019000300096</article-id>
<article-id pub-id-type="doi">10.17533/udea.redin.20190626</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Evaluation of methylparaben removal and microbial behavior using a SBR system]]></article-title>
<article-title xml:lang="es"><![CDATA[Remoción de methilparabeno y comportamiento microbiano de un sistema SBR]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Isaza Botero]]></surname>
<given-names><![CDATA[Eduar Andres]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Londoño]]></surname>
<given-names><![CDATA[Yudy Andrea]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pino]]></surname>
<given-names><![CDATA[Nancy J.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Peñuela]]></surname>
<given-names><![CDATA[Gustavo A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Antioquia Facultad de Ingeniería Sede de Investigación Universitaria (SIU)]]></institution>
<addr-line><![CDATA[Medellín ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad de Antioquia Escuela de Microbiología ]]></institution>
<addr-line><![CDATA[Medellín ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>09</month>
<year>2019</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>09</month>
<year>2019</year>
</pub-date>
<numero>92</numero>
<fpage>96</fpage>
<lpage>104</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0120-62302019000300096&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0120-62302019000300096&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0120-62302019000300096&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT We evaluated the variation in microbial populations and the behavior of an SBR system in the removal of methylparaben (MePB). The experimentation was carried out for 14 weeks, in three operational stages as follows: stabilization (Stage I), (Stage II = 300 &#956;gMePB/L and Stage III = 600 &#956;gMePB/L). The variation of the microorganisms was analyzed over the experimentation time along with the contact with the pollutant to be degraded, and the removal percentage of COD and MePB, with results of 88±5,5% and 92±7,7% respectively. Kinetic of MePB removal was evaluated to obtain the rate constant of biological degradation, Kbiol. Using these kinetic results, the effect of different concentrations of MePB and biomass on biodegradation behavior was evaluated. Kbiol (LgSS-1d-1) values were obtained of 42.8 and 79 respectively; and 472±38.0 µgMePB/L, at biomass contents of 1466.7 and 2666.7 mgSSV/L, where Kbiol (LgSS-1d-1) values were obtained of 11.0 and 32.6 respectively. The variation of the microbial populations were analyzed using DGGE. The results obtained indicated that the populations presented similar characteristics between the stages. However, for the biomass samples of Stage I and stage III, significant differences were identified in the composition of microbial populations. Nonetheless, this did not affect the removal of MePB and the diversity conditions that characterize an aerobic system.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN Se evaluó la variación en las poblaciones microbianas y el comportamiento de un sistema SBR en la eliminación de metilparabeno (MePB). La experimentación se llevó a cabo en tres etapas: (Etapa I: aclimatacion), (Etapa II = 300 &#956;gMePB / L y Etapa III = 600 &#956;gMePB / L). La variación de los microorganismos se analizó durante el tiempo de experimentación junto con el contacto con MePB y el porcentaje de eliminación de DQO, con resultados de 88 ± 5,5% y 92 ± 7,7% respectivamente. Se evaluó la eliminación cinética de MePB para obtener la constante de velocidad de degradación biológica, Kbiol. Usando estos resultados cinéticos, se evaluó el efecto de diferentes concentraciones de MePB y biomasa en el comportamiento de la biodegradación. Se obtuvieron valores de Kbiol (LgSS-1d-1) de 42.8 y 79 respectivamente; y 472 ± 38.0 µgMePB / L, a contenidos de biomasa de 1466.7 y 2666.7 mgSSV / L, donde se obtuvieron valores de Kbiol (LgSS-1d-1) de 11.0 y 32.6 respectivamente. La variación de las poblaciones microbianas se analizó utilizando DGGE. Los resultados indicaron que las poblaciones presentaron características similares entre las etapas, pero para las muestras de biomasa de Etapa I y Etapa III, se identificaron diferencias significativas en la composición de las poblaciones microbianas. No obstante, esto no afectó la eliminación de MePB y las condiciones de diversidad que caracterizan a un sistema aeróbico.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Water treatment]]></kwd>
<kwd lng="en"><![CDATA[water pollution]]></kwd>
<kwd lng="en"><![CDATA[microbial populations]]></kwd>
<kwd lng="es"><![CDATA[Tratamiento de aguas]]></kwd>
<kwd lng="es"><![CDATA[contaminación del agua]]></kwd>
<kwd lng="es"><![CDATA[poblaciones microbianas]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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