<?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>1993-8012</journal-id>
<journal-title><![CDATA[Minería y Geología]]></journal-title>
<abbrev-journal-title><![CDATA[Min. Geol.]]></abbrev-journal-title>
<issn>1993-8012</issn>
<publisher>
<publisher-name><![CDATA[EDUM. Universidad de Moa]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1993-80122021000100090</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Biosorción de cinc y cadmio por bacterias inactivadas pretratadas]]></article-title>
<article-title xml:lang="en"><![CDATA[Biosorption of zinc and cadmium by pre-treated inactive bacteria]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pérez-Bou]]></surname>
<given-names><![CDATA[Lizandra]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Martínez-Sardiñas]]></surname>
<given-names><![CDATA[Armando]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Salgado-Bernal]]></surname>
<given-names><![CDATA[Irina]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Larrea-Duarte]]></surname>
<given-names><![CDATA[Celia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Arias]]></surname>
<given-names><![CDATA[Mario Enrique Cruz]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Alleyne-Veitía]]></surname>
<given-names><![CDATA[Sheyla]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Carballo-Valdés]]></surname>
<given-names><![CDATA[María Elena]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de La Habana  ]]></institution>
<addr-line><![CDATA[ La Habana]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>03</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>03</month>
<year>2021</year>
</pub-date>
<volume>37</volume>
<numero>1</numero>
<fpage>90</fpage>
<lpage>104</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S1993-80122021000100090&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S1993-80122021000100090&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S1993-80122021000100090&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN El empleo de microorganismos en procesos de biorremediación constituye una alternativa para disminuir la presencia de metales pesados en los diferentes ecosistemas, lo que es uno de los principales problemas ambientales del presente siglo. El objetivo del trabajo fue determinar la efectividad de biomasas bacterianas, inactivadas y pretratadas, en la biosorción de cinc (Zn (II)) y cadmio (Cd (II)) en soluciones mono y bimetálicas. Se aplicó calor seco para inactivar las biomasas de Bacillus cereus (AL-30), Acinetobacter sp. (AL-134) y Micrococcus sp. (AL-138) y posteriormente se trataron con KOH y HCl. En todos los casos se constató un incremento significativo de los valores de captura de ambos iones, superiores a 40 mg.g-1. Estos resultados permitieron conformar diferentes sistemas bacterianos mixtos que fueron eficientes en la biosorción, a partir de la solución monometálica, con porcentajes superiores al 91,4 % y al 87,6 %, para el Zn (II) y Cd (II), respectivamente. En la solución bimetálica se observó una mayor captura de cadmio con relación al cinc por los sistemas bacterianos mixtos. Se evidencian las potencialidades de las biomasas bacterianas inactivadas y con pretratamiento químico para ser utilizadas en procesos de depuración de efluentes con presencia de los metales.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT An alternative for reducing heavy metals in different ecosystems is the use of microorganisms in bioremediation processes, one of the main environmental problems of the present century. The aim of this work is to determine the effectiveness of bacterial, pretreated, and inactivated biomasses in biosorption of zinc (Zn (II)) and cadmium (Cd (II)) in monometallic and bimetallic solutions. Dry heat was applied to inactivate biomasses of Bacillus cereus (AL-30), Acinetobacter sp. (AL-134) and Micrococcus sp. (AL-138); subsequently they were treated with KOH and HCl. In all cases, a significant increase in obtaining values &#8203;&#8203;of both ions, higher than 40 mg.g-1, was found. These results allowed forming different mixed bacterial systems which were efficient in biosorption, from monometallic solution, with percentages over 91,4 % and 87,6 %, for Zn (II) and Cd (II), respectively. In the bimetallic solution, a higher capture of cadmium regarding zinc was observed by mixed bacterial systems. The potentialities of the inactivated bacterial biomass and with chemical pretreatment to be used in effluent purification processes with the presence of these metals were evidenced.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[metales pesados]]></kwd>
<kwd lng="es"><![CDATA[biosorción]]></kwd>
<kwd lng="es"><![CDATA[bacteria inactivada]]></kwd>
<kwd lng="es"><![CDATA[solución bimetálica]]></kwd>
<kwd lng="es"><![CDATA[cinc]]></kwd>
<kwd lng="es"><![CDATA[cadmio]]></kwd>
<kwd lng="es"><![CDATA[biomasa]]></kwd>
<kwd lng="en"><![CDATA[heavy metals]]></kwd>
<kwd lng="en"><![CDATA[biosorption]]></kwd>
<kwd lng="en"><![CDATA[inactivated bacteria]]></kwd>
<kwd lng="en"><![CDATA[bimetallic solution]]></kwd>
<kwd lng="en"><![CDATA[zinc]]></kwd>
<kwd lng="en"><![CDATA[cadmium]]></kwd>
<kwd lng="en"><![CDATA[biomass]]></kwd>
</kwd-group>
</article-meta>
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