<?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>2223-4861</journal-id>
<journal-title><![CDATA[Centro Azúcar]]></journal-title>
<abbrev-journal-title><![CDATA[cen. az.]]></abbrev-journal-title>
<issn>2223-4861</issn>
<publisher>
<publisher-name><![CDATA[Editorial Feijóo]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2223-48612021000300021</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[ADSORCIÓN DE IONES PLOMO (II) EN CONDICIONES ISOTÉRMICAS UTILIZANDO CARBONES ACTIVADOS DE BAGAZO DE CAÑA, MARABÚ Y BAMBÚ]]></article-title>
<article-title xml:lang="en"><![CDATA[ADSORPTION OF LEAD (II) IONS IN ISOTHERMAL CONDITIONS USING ACTIVATED CARBON FROM SUGARCANE BAGASSE, MARABOU AND BAMBOO]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Prieto García]]></surname>
<given-names><![CDATA[Julio Omar]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pérez Leiva]]></surname>
<given-names><![CDATA[Ariel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Curbelo Sánchez]]></surname>
<given-names><![CDATA[Alfredo E.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Enríquez García]]></surname>
<given-names><![CDATA[Mixary]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mollineda Trujillo]]></surname>
<given-names><![CDATA[Ángel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Central &#8220;Marta Abreu&#8221; de las Villas Facultad de Química y Farmacia Departamento Licenciatura en Química]]></institution>
<addr-line><![CDATA[Santa Clara Villa Clara]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Central &#8220;Marta Abreu&#8221; de las Villas Facultad de Química y Farmacia Departamento de Ingeniería Química]]></institution>
<addr-line><![CDATA[Santa Clara Villa Clara]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Central &#8220;Marta Abreu&#8221; de las Villas Facultad de Ciencias Agropecuarias Centro de Investigaciones Agropecuarias (CIAP)]]></institution>
<addr-line><![CDATA[Santa Clara Villa Clara]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>09</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>09</month>
<year>2021</year>
</pub-date>
<volume>48</volume>
<numero>3</numero>
<fpage>21</fpage>
<lpage>28</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S2223-48612021000300021&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S2223-48612021000300021&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S2223-48612021000300021&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Introducción: Los carbones obtenidos por activación &#8220;química&#8221; de producción nacional pueden ser utilizados como adsorbentes de iones de elevado índice técnico.  Objetivo: Obtener carbón activado con buenas propiedades adsortivas a partir de bagazo de caña de azúcar, bambú y marabú, que permita la eliminación de iones Pb (II) de soluciones acuosas.  Materiales y Métodos: Se preparan carbones activados con bagazo de caña de azúcar (BC), marabú (M) y bambú (B) para adsorber Pb (II). BC, M y B se carbonizan a 400°C por 1 hora, activados con ácidos fosfóricos y modificados con ácido nítrico con calentamiento posterior. Son aplicados los modelos cinéticos y difusivos de seudoprimer orden, seudosegundo orden, Elovich, difusión en la película de líquido, difusión intrapartícula, modelo de Bangham y difusividad efectiva. Se determina el parámetro termodinámico variación de la energía libre.  Resultados y Discusión: Para los tres productos el modelo cinético de seudoprimer orden se ajusta al coeficiente de determinación aplicado. La constante aparente de velocidad de adsorción es mayor en el bagazo y menor en el bambú. La constante de equilibrio es mayor en el bambú y menor en el marabú. En cuanto al calor isostérico es mayor (modular) para el bagazo y menor para el marabú. La mayor capacidad de adsorción la posee el bambú 111,15 mg/g.  Conclusiones: El carbón obtenido por activación &#8220;química&#8221; de bambú es el que presenta el mejor resultado como adsorbente, cuya capacidad de adsorción es de 111,15 mg/g.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Introduction:  Coals obtained by "chemical" activation of national production can be used as ion adsorbents with a high technical index.  Objective: To obtain activated carbon with good adsorptive properties from sugarcane, bamboo and marabou bagasse, which allows the removal of Pb (II) ions from aqueous solutions.  Materials and Methods: Activated coals with sugarcane bagasse (BC), marabou (M) and bamboo (B) are prepared to adsorb Pb (II). BC, M and B are carbonized at 400 °C for 1 hour, activated with phosphoric acids and modified with nitric acid with subsequent heating. The kinetic and diffusive models of pseudo first order, pseudo second order, Elovich, liquid film diffusion, intraparticle diffusion, Bangham model and effective diffusivity are applied. Thermodynamic parameters are determined as variation of free energy.  Results and Discussion:  For all three products, the pseudo-first order kinetic model adjusts to the applied determination coefficient. The apparent adsorption rate constant is highest in bagasse and lowest in bamboo. The equilibrium constant is the greatest in bamboo and the lowest in marabou. As for the isosteric heat, it is the highest (modular) for bagasse and the lowest for marabou. Marabou has the highest adsorption capacity of 111.15 mg/g.  Conclusions:  Carbon obtained by "chemical" activation of bamboo is the one that presents the best result as an adsorbent, whose adsorption capacity is 111.15 mg/g.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[bagazo de caña]]></kwd>
<kwd lng="es"><![CDATA[bambú]]></kwd>
<kwd lng="es"><![CDATA[carbón activado]]></kwd>
<kwd lng="es"><![CDATA[marabú]]></kwd>
<kwd lng="es"><![CDATA[plomo]]></kwd>
<kwd lng="en"><![CDATA[sugarcane bagasse]]></kwd>
<kwd lng="en"><![CDATA[bamboo]]></kwd>
<kwd lng="en"><![CDATA[activated carbon]]></kwd>
<kwd lng="en"><![CDATA[marabou]]></kwd>
<kwd lng="en"><![CDATA[lead]]></kwd>
</kwd-group>
</article-meta>
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