<?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>1692-8261</journal-id>
<journal-title><![CDATA[Prospectiva]]></journal-title>
<abbrev-journal-title><![CDATA[Prospect.]]></abbrev-journal-title>
<issn>1692-8261</issn>
<publisher>
<publisher-name><![CDATA[Universidad Autónoma del Caribe, Facultad de Ingeniería]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1692-82612018000100100</article-id>
<article-id pub-id-type="doi">10.15665/rp.v16i1.846</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Evaluación de la lixiviación de sulfuro de zinc en ensayos de laboratorio]]></article-title>
<article-title xml:lang="en"><![CDATA[Evaluation of zinc sulfide leaching in laboratory tests]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ossa H]]></surname>
<given-names><![CDATA[Diana Marcela]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Zapata]]></surname>
<given-names><![CDATA[Dioni Mabel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de la Costa (CUC)  ]]></institution>
<addr-line><![CDATA[Barranquilla ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Nacional Sede Medellín  ]]></institution>
<addr-line><![CDATA[Medellín ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2018</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2018</year>
</pub-date>
<volume>16</volume>
<numero>1</numero>
<fpage>100</fpage>
<lpage>106</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S1692-82612018000100100&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S1692-82612018000100100&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S1692-82612018000100100&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN En este trabajo se evaluó el proceso de lixiviación de Zn a partir del mineral esfalerita, mediante el uso de microorganismos acidófilos. En general, todas las minas estudiadas mostraron un alto grado de intemperismo, evidenciado por la formación de espeleotemas que se generan a partir de techos y paredes, constituidos principalmente por óxidos, oxihidróxidos y sulfatos de hierro, en un ambiente muy húmedo, con alta percolación de agua. De acuerdo con los resultados obtenidos, los microorganismos acidófilos oxidantes de hierro, evidenciaron capacidad para oxidar activamente los sulfuros provenientes de la zona. Sin embargo, se observaron diferencias significativas en la capacidad de lixiviar Zn entre las cepas, proporcionando de esta forma una metodología eficiente para seleccionar cepas más aptas para la utilización en procesos en mayor escala. En general, los ensayos con las muestras provenientes de la mina San Antonio, mostraron una mayor eficiencia en la lixiviación de Zn, alcanzando concentraciones cercanas a 35.000 ppm a las 100 horas en cultivos con 5%w/v de mineral concentrado de esfalerita y pirita. Se observó además una disminución creciente en la velocidad de disolución de Zn con el aumento en el porcentaje de pulpa, hasta un límite máximo de 10% w/v.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT It was evaluated the Zn of leaching from sphalerite ore concentrates, using an acidophilic strains. The locals of mineralogical sampling showed intensive weathering, evidenced by the generation of iron oxides, oxihydroxides, sulphates stalactites, stalagmites and crosts, in roofs and walls, in a wet environment, with high water percolation. All acidophilic cultures displaying sulphide oxidation ability, but showing significant differences in it activities and kinetics. This feature provides judgment methodology for the selection of the best strain to work in other scales. In this study, the San Antonio isolated had high leaching efficiency of Zn, up to about 35.000 ppm at 100 h, using 5%w/v of sphalerite/pyrite ore concentrates. Finally, the test showed a decrease of Zn with increased in a pulp solids concentration up to 10% w/v.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Lixiviación de Zn]]></kwd>
<kwd lng="es"><![CDATA[Microorganismos acidófilos nativos]]></kwd>
<kwd lng="es"><![CDATA[Minas Marmato (Caldas)]]></kwd>
<kwd lng="es"><![CDATA[Pirita]]></kwd>
<kwd lng="es"><![CDATA[Esfalerita]]></kwd>
<kwd lng="en"><![CDATA[Zn leaching]]></kwd>
<kwd lng="en"><![CDATA[Native acidophilic strain]]></kwd>
<kwd lng="en"><![CDATA[Mining from Caldas (Colombia)]]></kwd>
<kwd lng="en"><![CDATA[Pyrite]]></kwd>
<kwd lng="en"><![CDATA[Sphalerite]]></kwd>
</kwd-group>
</article-meta>
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