<?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>0012-7353</journal-id>
<journal-title><![CDATA[DYNA]]></journal-title>
<abbrev-journal-title><![CDATA[Dyna rev.fac.nac.minas]]></abbrev-journal-title>
<issn>0012-7353</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional de Colombia]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0012-73532020000400186</article-id>
<article-id pub-id-type="doi">10.15446/dyna.v87n215.86354</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Toxicity test for Fuller&#8217;s earth contaminated with dielectric oil using eisenia foetida earthworms and soils with different carbon contents]]></article-title>
<article-title xml:lang="es"><![CDATA[Prueba de toxicidad para la tierra Fuller contaminada con aceite dieléctrico usando lombrises eisenia foetida y suelos con diferentes contenidos de carbono]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Beltran-Perez,]]></surname>
<given-names><![CDATA[Oscar Dario]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Berrio-Giraldo,]]></surname>
<given-names><![CDATA[Linda-Ivette]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Agudelo]]></surname>
<given-names><![CDATA[Edison-Alexander]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cardona-Gallo]]></surname>
<given-names><![CDATA[Santiago-Alonso]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional de Colombia Facultad de Minas ]]></institution>
<addr-line><![CDATA[Medellín ]]></addr-line>
<country>Colombia</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>87</volume>
<numero>215</numero>
<fpage>186</fpage>
<lpage>192</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0012-73532020000400186&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0012-73532020000400186&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0012-73532020000400186&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Fuller&#8217;s earth is an adsorbent material used in the electric industry for dielectric oil regeneration. The high amount of polyaromatic hydrocarbons removed from oil and adsorbed in the Fuller&#8217;s earth makes this material a hazardous waste. It is necessary to implement a toxicity test and apply a suitable treatment to safely dispose of this waste in a landfill or repurpose it for reuse. In this paper, the toxicity of Fuller&#8217;s earth contaminated with dielectric oil is assessed before and after treatment. The toxic potential of the Fuller&#8217;s earth and the dielectric oil extracted through decontamination processes was evaluated in two types of soil with different carbon contents, analyzing the effects on the test organisms, Eisenia foetida earthworms. These tests showed that decontaminated Fuller&#8217;s earth is non-toxic, and that the toxicity of the contaminated Fuller&#8217;s earth, or its extracts after treatment, represented by the median lethal concentration (LC50) depends significantly on the type of soil used.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen La tierra de Fuller es un material adsorbente utilizado en la industria eléctrica para la regeneración de aceite dieléctrico. La gran cantidad de hidrocarburos poliaromáticos eliminados del petróleo y adsorbidos en la tierra de Fuller hace que este material sea un desecho peligroso. Es necesario implementar una prueba de toxicidad y aplicar un tratamiento adecuado para desechar de manera segura estos desechos en un vertedero o reciclar para su reutilización. En este documento, la toxicidad de la tierra de Fuller contaminada con aceite dieléctrico se evalúa antes y después del tratamiento. El potencial tóxico de la tierra de Fuller y el aceite dieléctrico extraído mediante procesos de descontaminación se evaluó en dos tipos de suelo con diferentes contenidos de carbono, analizando los efectos en los organismos de prueba, las lombrices de tierra Eisenia Foetida. Estas pruebas mostraron que la tierra de Fuller descontaminada no es tóxica, y que la toxicidad de la tierra de Fuller contaminada, o sus extractos después del tratamiento, representada por la concentración letal media (CL50) depende significativamente del tipo de suelo utilizado.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Fuller&#8217;s earth]]></kwd>
<kwd lng="en"><![CDATA[dielectric oil]]></kwd>
<kwd lng="en"><![CDATA[toxicity test]]></kwd>
<kwd lng="en"><![CDATA[Eisenia foetida]]></kwd>
<kwd lng="en"><![CDATA[soil carbon content]]></kwd>
<kwd lng="en"><![CDATA[median lethal concentration]]></kwd>
<kwd lng="es"><![CDATA[tierra de Fuller]]></kwd>
<kwd lng="es"><![CDATA[aceite dieléctrico]]></kwd>
<kwd lng="es"><![CDATA[prueba de toxicidad]]></kwd>
<kwd lng="es"><![CDATA[Eisenia foetida]]></kwd>
<kwd lng="es"><![CDATA[contenido de carbono en el suelo]]></kwd>
<kwd lng="es"><![CDATA[concentración letal media]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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