<?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>0250-5460</journal-id>
<journal-title><![CDATA[Revista Boliviana de Química]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. Bol. Quim]]></abbrev-journal-title>
<issn>0250-5460</issn>
<publisher>
<publisher-name><![CDATA[Universidad Mayor de San Andrés]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0250-54602021000300119</article-id>
<article-id pub-id-type="doi">10.34098/2078-3949.38.3.3</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Biosorption of lead(ii) ions by dead bacterial Biomass isolated from mine water]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Canaza]]></surname>
<given-names><![CDATA[Alejandro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pozo]]></surname>
<given-names><![CDATA[Lizzette]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ferrufino-Guardia]]></surname>
<given-names><![CDATA[Erick]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vargas]]></surname>
<given-names><![CDATA[Virginia A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Mayor de San Simón Facultad de Ciencias y Tecnología Centro de Biotecnología]]></institution>
<addr-line><![CDATA[Cochabamba ]]></addr-line>
<country>Bolivia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Mayor de San Simón Centro de Biotecnología Facultad de Ciencias y Tecnología]]></institution>
<addr-line><![CDATA[Cochabamba ]]></addr-line>
<country>Bolivia</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Mayor de San Simón Centro de Biotecnología Facultad de Ciencias y Tecnología]]></institution>
<addr-line><![CDATA[Cochabamba ]]></addr-line>
<country>Bolivia</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad Mayor de San Simón Centro de Biotecnología Facultad de Ciencias y Tecnología]]></institution>
<addr-line><![CDATA[Cochabamba ]]></addr-line>
<country>Bolivia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2021</year>
</pub-date>
<volume>38</volume>
<numero>3</numero>
<fpage>119</fpage>
<lpage>125</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.bo/scielo.php?script=sci_arttext&amp;pid=S0250-54602021000300119&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.bo/scielo.php?script=sci_abstract&amp;pid=S0250-54602021000300119&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.bo/scielo.php?script=sci_pdf&amp;pid=S0250-54602021000300119&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Lead and its different chemical forms have been widely used in industry over the past years and the result is the high pollution detected in water and soil environments. Lead (II) resistant microorganisms were isolated from liquid samples collected from Mina Asientos, Cochabamba-Bolivia. Eleven strains were isolated in solid media with 200 ppm Pb(II) and 4 strains were selected for metal removal in liquid samples. One strain presented the highest Pb(II) removal values for 250 ppm Pb(II). The selected strain designated as MA-4 was subjected to phylogenetic studies and showed 99.9 % sequence similarity with Pseudomonas monteilii. The biosorption follows Langmuir and Freundlich isotherm models, with qmax and Kf values of 166.67 and 11.09, respectively. These results implied a strong binding capacity to dead biomass and its potential application in biosorption process.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  El plomo y sus diferentes formas químicas se han utilizado ampliamente en la industria durante los últimos años y el resultado es la alta contaminación detectada en el agua y el suelo. Se aislaron microorganismos resistentes al plomo (II) de muestras líquidas recolectadas en Mina Asientos, Cochabamba-Bolivia. Se aislaron once cepas en medio sólido con 200 ppm de Pb (II) y se seleccionaron 4 cepas para remoción de metales en muestras líquidas, una cepa presentó los valores de remoción de Pb (II) más altos para 250 ppm de Pb (II). La cepa seleccionada designada como MA-4 se sometió a estudios filogenéticos y mostró una similitud de secuencia del 99,9% con Pseudomonas monteilii. La biosorción sigue los modelos de isotermas de Langmuir y Freundlich, con valores de qmax y Kf de 166,67 y 11,09, respectivamente. Estos resultados implicaron una fuerte capacidad de unión a la biomasa muerta y su potencial aplicación en el proceso de biosorción.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Biosorption]]></kwd>
<kwd lng="en"><![CDATA[Lead]]></kwd>
<kwd lng="en"><![CDATA[Bacterial biomass]]></kwd>
<kwd lng="es"><![CDATA[Biosorción]]></kwd>
<kwd lng="es"><![CDATA[Plomo]]></kwd>
<kwd lng="es"><![CDATA[Biomasa bacteriana]]></kwd>
</kwd-group>
</article-meta>
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