<?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>1692-3561</journal-id>
<journal-title><![CDATA[Biotecnología en el Sector Agropecuario y Agroindustrial]]></journal-title>
<abbrev-journal-title><![CDATA[Rev.Bio.Agro]]></abbrev-journal-title>
<issn>1692-3561</issn>
<publisher>
<publisher-name><![CDATA[Taller Editorial Universidad del Cauca]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1692-35612022000200018</article-id>
<article-id pub-id-type="doi">10.18684/rbsaa.v20.n2.2022.1616</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Remoción de compuestos fenólicos totales de aguas del beneficio de café sobre una matriz de origen natural]]></article-title>
<article-title xml:lang="en"><![CDATA[Removal of total phenolic compounds from coffee processing waters on a matrix of natural origin]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[CAICEDO-ORJUELA]]></surname>
<given-names><![CDATA[OBRADITH,]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[MAHECHA-PÉREZ,]]></surname>
<given-names><![CDATA[JUAN ANDRÉS]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[NAVARRETE-RODRIGUEZ]]></surname>
<given-names><![CDATA[LUISA FERNANDA]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Santo Tomás Departamento de Ciencias Básicas Grupo de Investigación Ciencia e Ingeniería de Materiales]]></institution>
<addr-line><![CDATA[Bogotá ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Santo Tomás Facultad de Ingeniería Ambiental ]]></institution>
<addr-line><![CDATA[Bogotá ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Libre Facultad de Ingeniería Grupo de Investigación Tecnoambiental]]></institution>
<addr-line><![CDATA[Bogotá ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>07</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>07</month>
<year>2022</year>
</pub-date>
<volume>20</volume>
<numero>2</numero>
<fpage>18</fpage>
<lpage>28</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S1692-35612022000200018&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S1692-35612022000200018&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S1692-35612022000200018&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN( El uso de distintos materiales para la adsorción de diferentes tipos de moléculas es ampliamente conocido. Sin embargo, en la actualidad, ha surgido la necesidad de usar materiales de origen natural dado su composición, porosidad y características intrínsecas como ser renovables, económicas y amigables con el medio ambiente para la retención de contaminantes como los fenoles. Este estudio tuvo como objetivo disminuir el contenido de compuestos fenólicos en aguas residuales del beneficio del café. Para esto, se determinó el porcentaje de retención de dichos compuestos en Luffa cylindrica (estropajo) como material adsorbente. Se evaluó la influencia del pH, tamaño de partícula y tiempo de contacto bajo diseño experimental factorial 23. Se logró un porcentaje de retención de fenoles totales de 97,8 % a pH 7,0, tamaño de partícula 850 &#956;m y 2 h de exposición. El comportamiento cinético obtenido corresponde a un modelo de pseudo segundo orden y la adsorción de compuestos fenólicos totales por Luffa cylindrica está representado por la isoterma de Freundlich. Adicionalmente, se logró disminuir el valor de otros índices de contaminación como DQO y turbidez, por tanto, el tratamiento con Luffa cylindrica se constituye en una valiosa alternativa para el tratamiento de aguas provenientes del beneficio del café.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT The use of different materials for the adsorption of different types of molecules is well known. However, currently there is a need to use materials of natural origin given their composition, porosity and characteristics such as being renewable, economical and friendly to the environment for the retention of contaminants such as phenols. The objective of this study was to reduce the content of phenolic compounds in wastewater from coffee processing wastewater. To achieve this, the percentage of retention of the phenolic compounds was evaluated on the vegetable sponge, Luffa cylindrica as adsorbent material. The influence of pH, particle size and contact time under experimental design was evaluated in a 23 model. A total phenol retention percentage of 97,8 % at pH 7,0 particle size 850&#956;m and 2 h exposure was achieved. The kinetic behaviour corresponds to a pseudo second order model, and the adsorption of the phenolic compounds-Luffa cylindrica is represented by the Freundlich isotherm. Additionally, it was possible to reduce the value of other pollution parameters such as COD andturbidity. Therefore, treatment with Luffa cylindrica is a valuable alternative for the treatment of water from the processing of coffee]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Cinética Química]]></kwd>
<kwd lng="es"><![CDATA[Tratamiento del Agua]]></kwd>
<kwd lng="es"><![CDATA[Química Ambiental]]></kwd>
<kwd lng="es"><![CDATA[Compuestos Fenólicos]]></kwd>
<kwd lng="es"><![CDATA[Luffa cylindrica.]]></kwd>
<kwd lng="en"><![CDATA[Chemical Kinetics]]></kwd>
<kwd lng="en"><![CDATA[Water Treatment]]></kwd>
<kwd lng="en"><![CDATA[Environmental Chemistry]]></kwd>
<kwd lng="en"><![CDATA[Vegetable Sponge]]></kwd>
<kwd lng="en"><![CDATA[Phenolic Compounds]]></kwd>
<kwd lng="en"><![CDATA[Luffa cylindrica]]></kwd>
</kwd-group>
</article-meta>
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