<?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>0188-4999</journal-id>
<journal-title><![CDATA[Revista internacional de contaminación ambiental]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. Int. Contam. Ambient]]></abbrev-journal-title>
<issn>0188-4999</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional Autónoma de México, Instituto de Ciencias de la Atmósfera y Cambio Climático]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0188-49992016000300255</article-id>
<article-id pub-id-type="doi">10.20937/RICA.2016.32.03.01</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Tratamiento de vinazas en un reactor de lecho fluidizado inverso anaerobio]]></article-title>
<article-title xml:lang="en"><![CDATA[Vinasses treatment by anaerobic inverse fluidized bed reactor]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Houbron]]></surname>
<given-names><![CDATA[Eric]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sandoval Rojas]]></surname>
<given-names><![CDATA[Martha Elvira]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hernández Muñoz]]></surname>
<given-names><![CDATA[Aurelio Felix]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Veracruzana Facultad de Ciencias Químicas ]]></institution>
<addr-line><![CDATA[Orizaba Veracruz]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Instituto Tecnológico de Minatitlán Unidad de Investigación del Medio Ambiente ]]></institution>
<addr-line><![CDATA[Minatitlán Veracruz]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Politécnica de Madrid Escuela Técnica Superior de Ingenieros de Caminos Canales y Puertos ]]></institution>
<addr-line><![CDATA[Madrid ]]></addr-line>
<country>Spain</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2016</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2016</year>
</pub-date>
<volume>32</volume>
<numero>3</numero>
<fpage>255</fpage>
<lpage>266</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0188-49992016000300255&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0188-49992016000300255&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0188-49992016000300255&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN: En la producción de etanol se generan vinazas, efluentes con pH ácido y elevada demanda química de oxígeno (DQO). Los sistemas de tratamiento anaerobio con biopelícula son una tecnología consolidada para tratamiento de efluentes industriales. El reactor de lecho fluidizado inverso anaerobio (LFI), empleado en el tratamiento de efluentes de alta carga, utiliza un soporte que proporciona una gran superficie y un bajo requerimiento de energía para la fluidización del lecho. Este trabajo evalúa el desempeño de un LFI, empleando Extendospher® como soporte y tratando efluentes de la producción de etanol. El reactor arrancó por lotes, posteriormente operó en continuo a diferentes cargas orgánicas volumétricas: 0.5, 1.0, 3.3, 6.8 y 10.4 gDQO/L d. Además, se evaluaron diferentes tiempos de residencia hidráulica (TRH): 10, 5 y 1 días. El sistema alcanzó las siguientes eficiencias promedio de remoción de DQO: 81 % para la operación en lotes, y 58, 67, 59 y 50 % con cargas de 0.5, 1.0, 3.3, 6.8 gDQO/L d respectivamente. Para la carga de 10.4 gDQO/L d, la eficiencia promedio de remoción de DQO fue 38 %, en esta condición el reactor presentó inestabilidad y disminución del rendimiento de metano. La generación de metano inició hasta los 110 días de operación del reactor a una carga de 1.0 gDQO/L d. El sistema alcanzó un rendimiento de metano desde 0.15 hasta 0.34 LCH4/gDQOremovida. El reactor operando a una carga constante de 6.4 gDQO/L d, y TRH de 1 día, alcanzó una eficiencia promedio de remoción de DQO de 52 %.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRAC: The vinasses are the residual liquid waste after distillation of the ethanol. This distillery effluent generally has a very high chemical oxygen demand (COD) concentration and low pH. Anaerobic treatment whit biofilms systems is a well-established technology for the treatment of industrial effluents. The anaerobic inverse fluidized bed reactor (IFBR) has been developed to provide biological treatment of high strength organic wastewater for their large specific surface and their low energy requirements for fluidization. This study describes the performance of IFBR with Extendospher®, for the treatment of vi-nasses. The start-up was in batch, increasing gradually the organic load rate (OLR): 0.5, 1.0, 3.3, 6.8 and 10.4 gCOD/L d. Different hydraulic retention times (HRT) were evaluated: 10, 5 and 1 days. During the batch operation, the COD removal obtained was of 81 %, and for OLR of 0.5, 1.0, 3.3, 6.8 gCOD/L d the removal obtained was 58, 67, 59 and 50 % respectively. For a maximum OLR of 10.4 gCOD/L d, the COD removal was 38 %, and the system presented instability and a decrease of yield methane. The methane production initiated after 110 days from the start-up of the IFBR, to organic load rate of 1.0 gCOD/L d. The system reached values in the methane yield from 0.15 up to 0.34 LCH4/g CODremoved for the different organic load rates. During the operation to a constant OLR of 6.4 gCOD/L d, and a HRT of 1 day, the IFBR reached a maximum efficiency of removal of 52 %.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[efluentes de producción de etanol]]></kwd>
<kwd lng="es"><![CDATA[digestión anaerobia]]></kwd>
<kwd lng="es"><![CDATA[carga orgánica volumétrica]]></kwd>
<kwd lng="es"><![CDATA[tiempo de residencia hidráulica]]></kwd>
<kwd lng="en"><![CDATA[effluents of ethanol production]]></kwd>
<kwd lng="en"><![CDATA[anaerobic digestion]]></kwd>
<kwd lng="en"><![CDATA[organic load rate]]></kwd>
<kwd lng="en"><![CDATA[hydraulic retention times]]></kwd>
</kwd-group>
</article-meta>
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