<?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>2224-5421</journal-id>
<journal-title><![CDATA[Revista Cubana de Química]]></journal-title>
<abbrev-journal-title><![CDATA[Rev Cub Quim]]></abbrev-journal-title>
<issn>2224-5421</issn>
<publisher>
<publisher-name><![CDATA[Ediciones UO, Universidad de Oriente]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2224-54212020000200331</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Utilización de bagazo de caña de azúcar natural y tratado ecucquímicamente, como material adsorbente para Cu 2+]]></article-title>
<article-title xml:lang="en"><![CDATA[Usage of natural and chemically treated sugar cane bagasse as adsorbent material for adsorption of Cu2+]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cascaret-Carmenaty]]></surname>
<given-names><![CDATA[Dannis Adrian]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rodríguez-Matos]]></surname>
<given-names><![CDATA[Josefina]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ricardo-Lobaina]]></surname>
<given-names><![CDATA[Carlos Alfredo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Quesada-González]]></surname>
<given-names><![CDATA[Omaida]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Bahín-Deroncelé]]></surname>
<given-names><![CDATA[Leonardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Oriente Facultad de Ciencias Naturales y Exactas Departamento de Química]]></institution>
<addr-line><![CDATA[Santiago de Cuba ]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2020</year>
</pub-date>
<volume>32</volume>
<numero>2</numero>
<fpage>331</fpage>
<lpage>344</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S2224-54212020000200331&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S2224-54212020000200331&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S2224-54212020000200331&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN En esta investigación se evalúa la adsorción de Cu2+ por bagazo de caña de azúcar, tanto natural como tratado con NaOH y H3PO4, en muestras de aguas de la &#8220;Laguna Azul&#8221; de El Cobre, Santiago de Cuba. Los experimentos mostraron que el bagazo natural es capaz de remover en disoluciones patrón 31,6 % de Cu2+ a pH=3,30, tiempo de contacto 30 min y proporción 0,50 g (masa de adsorbente)/50 mL. Los porcientos de remoción del bagazo tratado con NaOH y H3PO4 fueron 39,3 % y 93,3% respectivamente, para las mismas condiciones experimentales. En la matriz real los porcientos de remoción de cobre fueron 18,34; 29,4 y 86,5% respectivamente. Según modelo de Langmuir, la capacidad máxima de adsorción determinada (qm) fue 7,57 mg/g a pH=3,30 con r2=0,96. La evidencia sugiere un fuerte potencial del bagazo como material adsorbente, así como un tratamiento alternativo para minimizar el impacto de contaminación por Cu2+ en ecosistemas acuáticos.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT This research evaluates the adsorption of Cu2+ by sugarcane bagasse, both natural and treated with NaOH and H3PO4, in water samples from "Blue Lagoon" of El Cobre, Santiago de Cuba. Experiments showed that natural bagasse is capable of removing 31, 6% of Cu2+ in standard solutions at pH = 3,30, contact time 30 minutes and ratio of 0,50 g (mass of adsorbent) / 50 mL. The removal percentages of bagasse treated with NaOH and H3PO4 were 39.3% and 93.3% respectively, for the same experimental conditions. In the real matrix, the copper removal percentages were 18,34; 29,4 and 86,5% respectively. According to Langmuir's model, the measured maximum adsorption capacity (qm) was 7,57 mg / g at pH = 3,30 with r2 = 0,96. The evidence suggests a strong potential for bagasse as an adsorbent material, as well as an alternative treatment to minimize the impact of pollution by Cu2+ on aquatic ecosystems.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[bagazo de caña]]></kwd>
<kwd lng="es"><![CDATA[adsorción]]></kwd>
<kwd lng="es"><![CDATA[cobre]]></kwd>
<kwd lng="es"><![CDATA[contaminación]]></kwd>
<kwd lng="es"><![CDATA[remoción]]></kwd>
<kwd lng="en"><![CDATA[cane bagasse]]></kwd>
<kwd lng="en"><![CDATA[adsorption]]></kwd>
<kwd lng="en"><![CDATA[copper]]></kwd>
<kwd lng="en"><![CDATA[contamination]]></kwd>
<kwd lng="en"><![CDATA[removal]]></kwd>
</kwd-group>
</article-meta>
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