<?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>S2224-54212020000300511</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Remoción de cobre de aguas contaminadas empleando ramnolípidos]]></article-title>
<article-title xml:lang="en"><![CDATA[Removal of copper from contaminated waters using rhamnolipids]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rodríguez-Gámez]]></surname>
<given-names><![CDATA[Odalys]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pérez-Macías]]></surname>
<given-names><![CDATA[Rocio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Aguilera-Rodríguez]]></surname>
<given-names><![CDATA[Isabel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pérez-Silva]]></surname>
<given-names><![CDATA[Rosa María]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Abalos-Rodríguez]]></surname>
<given-names><![CDATA[Arelis]]></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 Centro de Estudios de Biotecnología Industrial]]></institution>
<addr-line><![CDATA[Santiago de Cuba ]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Empresa Geominera Oriente Sur  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2020</year>
</pub-date>
<volume>32</volume>
<numero>3</numero>
<fpage>511</fpage>
<lpage>526</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S2224-54212020000300511&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S2224-54212020000300511&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S2224-54212020000300511&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN El empleo de ramnolípidos constituye una alternativa atractiva y ecocompatible en la remediación de ambientes contaminados con metales pesados. En el presente trabajo se evaluó la capacidad del ramnolípido producido por P. aeruginosa ORA9 de remover cobre en aguas contaminadas de la Laguna Azul del Cobre, para controlar y disminuir el riesgo humano y ambiental que estas aguas representan. Se estudió la influencia del pH de la solución de ramnolípidos (4-10), el tiempo de contacto (2-10 horas) y la concentración del biosurfactante (40-120 mg L-1) en el proceso, a través de un diseño factorial Box-Bhenken. Se observó un incremento del porcentaje de remoción de cobre, proporcional al tiempo de contacto y la concentración del biosurfactante, alcanzándose un 48 % de remoción a las 10 h y 120 mg L-1. Los resultados obtenidos indican que los ramnolípidos pueden utilizarse en el diseño de una tecnología para remover cobre en aguas contaminadas.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT The use of rhamnolipids constitutes an attractive and eco-compatible alternative in the remediation of contaminated environments with heavy metals. In the present work, the ability of rhamnolipid produced by P. aeruginosa ORA9 to remove copper in contaminated waters of the Blue Lagoon of El Cobre, was evaluated, to control and reduce the human and environmental risk that these waters represent. The influence of the pH of the rhamnolipid solution (4-10), the contact time (2-10 hours) and the concentration of the biosurfactant (40-120 mg L-1) in the process were studied, through a factorial design Box-Bhenken. An increase in the percentage of copper removal proportional to the contact time and the concentration of the biosurfactant was observed, reaching 48 % removal at 10 h and 120 mg L-1. The results obtained indicate that rhamnolipids can be used in the design of a technology to remove copper in polluted contaminated waters.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[ramnolípido]]></kwd>
<kwd lng="es"><![CDATA[agua contaminada]]></kwd>
<kwd lng="es"><![CDATA[metales pesados]]></kwd>
<kwd lng="es"><![CDATA[cobre]]></kwd>
<kwd lng="es"><![CDATA[diseño factorial]]></kwd>
<kwd lng="en"><![CDATA[rhamnolipid]]></kwd>
<kwd lng="en"><![CDATA[contaminated water]]></kwd>
<kwd lng="en"><![CDATA[copper]]></kwd>
<kwd lng="en"><![CDATA[heavy metals]]></kwd>
<kwd lng="en"><![CDATA[factorial design]]></kwd>
</kwd-group>
</article-meta>
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