<?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>S0188-49992023000100108</article-id>
<article-id pub-id-type="doi">10.20937/rica.54514</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Elaboración de carbón activado a partir de endocarpio de coco para la remoción de anaranjado de metilo en fase acuosa]]></article-title>
<article-title xml:lang="en"><![CDATA[Activated carbon elaboration from coconut shell for removal of methyl orange in aqueous phase]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Zambrano Campitelli]]></surname>
<given-names><![CDATA[Miguel Ernesto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pérez Hernández]]></surname>
<given-names><![CDATA[Miguel Manuel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Metropolitana  ]]></institution>
<addr-line><![CDATA[Caracas Miranda]]></addr-line>
<country>Venezuela</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2023</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2023</year>
</pub-date>
<volume>39</volume>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0188-49992023000100108&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0188-49992023000100108&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0188-49992023000100108&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN En este trabajo se muestra el proceso de generación de carbón activado a partir de endocarpio de coco, utilizando hidróxido de potasio, en el procedimiento de activación química y en una atmósfera inerte. Se llevaron a cabo estudios de cinética de adsorción para cuatro concentraciones iniciales y estudios de equilibrio por carga en un rango de cuatro concentraciones, con soluciones de anaranjado de metilo a 40, 80, 200 y 400 mg/L para ambos estudios. Se determinó que el modelo cinético de pseudosegundo orden es el que mejor describió el proceso de adsorción en el tiempo para todas las concentraciones iniciales estudiadas. A partir de ese resultado se construyeron los gráficos respectivos para determinar el porcentaje de remoción en función de la cantidad de adsorbente y el tiempo empleado. El modelo de difusión intraparticular arrojó que éste no era el único que determinaba la velocidad del proceso. La expresión lineal de la isoterma de Langmuir muestra un buen ajuste de los datos, dando como resultado una capacidad máxima de adsorción de 147.01 mg/g.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT This work shows the generation of activated carbon from coconut shells, using chemical activation with potassium hydroxide under an inert atmosphere. Kinetic adsorption studies were performed for four initial concentrations and equilibrium batch studies in a four-concentration range. For both studies, methyl orange solutions at 40, 80, 200, and 400 mg/L were used. The pseudo-second order model showed the best fit to describe the adsorption process for all the initial concentrations studied. From this result, graphs were plotted to determine the percentage of removal as a function of the amount of adsorbent and the contact time. The intramolecular diffusion model showed that it was not the only mechanism restricting the rate of adsorption. The linear Langmuir equation showed a good fit and calculated the maximum adsorption on the monolayer as 147.013 mg/g.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[residuos]]></kwd>
<kwd lng="es"><![CDATA[colorante]]></kwd>
<kwd lng="es"><![CDATA[intraparticular]]></kwd>
<kwd lng="es"><![CDATA[Langmuir]]></kwd>
<kwd lng="es"><![CDATA[Freundlich]]></kwd>
<kwd lng="es"><![CDATA[monocapa]]></kwd>
<kwd lng="es"><![CDATA[Elovich]]></kwd>
<kwd lng="en"><![CDATA[waste]]></kwd>
<kwd lng="en"><![CDATA[dye]]></kwd>
<kwd lng="en"><![CDATA[intraparticular]]></kwd>
<kwd lng="en"><![CDATA[Langmuir]]></kwd>
<kwd lng="en"><![CDATA[Freundlich]]></kwd>
<kwd lng="en"><![CDATA[monolayer]]></kwd>
<kwd lng="en"><![CDATA[Elovich]]></kwd>
</kwd-group>
</article-meta>
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