<?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>S0012-73532020000400034</article-id>
<article-id pub-id-type="doi">10.15446/dyna.v87n215.83649</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[A quantitative assessment of the environmental sustainability of UCG and CO2 storage]]></article-title>
<article-title xml:lang="es"><![CDATA[Evaluación cuantitativa de la sostenibilidad ambiental de UCG y almacenamiento de CO2]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Navarro-Torres]]></surname>
<given-names><![CDATA[Vidal Félix]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Tecnológico Vale  ]]></institution>
<addr-line><![CDATA[Ouro Preto ]]></addr-line>
<country>Brazil</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>34</fpage>
<lpage>38</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0012-73532020000400034&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0012-73532020000400034&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0012-73532020000400034&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract In this study, an innovative numerical model was developed to quantify the environmental sustainability situation of in situ underground coal gasification (UCG) and the CO2 storage process, which is expressed in terms of the environmental sustainability index (ESI). This approach is based on four environmental indicators: rock and soil, groundwater, surface water, and atmosphere. Based on the ESI values, the methodology proposed herein is used to classify the environmental sustainability state of the UCG process and its corresponding threshold limit value. Finally, the developed mathematical model was applied to possible European coal deposits, specifically in a Bulgarian coal basin. Research efforts have focused on the development of a mathematical model for environmental impact assessments to pave the way for full-scale trial and commercial applications.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen En este estudio, se desarrolla un modelo numérico innovador para cuantificar la situación de sostenibilidad ambiental de la gasificación subterránea de carbón in situ (UCG) y el proceso de almacenamiento de CO2 que se expresa en términos del Índice de Sostenibilidad Ambiental (ESI). Este enfoque se basa en cuatro indicadores ambientales, a saber: roca y suelo, agua subterránea, agua superficial y atmósfera. Basado en los valores de ESI, aquí se propone una metodología para clasificar el estado de sostenibilidad ambiental del proceso UCG, así como su valor límite admisible correspondiente. Finalmente, el modelo matemático se ha desarrollado y aplicado a posibles depósitos de carbón europeos, específicamente en una cuenca de carbón de Bulgaria. Los esfuerzos de investigación se han centrado en el desarrollo de un modelo matemático de evaluación de impactos ambientales con el fin de buscar el camino para una prueba a gran escala y aplicaciones comerciales.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[underground coal gasification]]></kwd>
<kwd lng="en"><![CDATA[environmental sustainability index]]></kwd>
<kwd lng="en"><![CDATA[sustainability condition]]></kwd>
<kwd lng="es"><![CDATA[gasificación subterránea de carbón]]></kwd>
<kwd lng="es"><![CDATA[índice de sostenibilidad ambiental]]></kwd>
<kwd lng="es"><![CDATA[condición de sostenibilidad]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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