<?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>0379-3982</journal-id>
<journal-title><![CDATA[Revista Tecnología en Marcha]]></journal-title>
<abbrev-journal-title><![CDATA[Tecnología en Marcha]]></abbrev-journal-title>
<issn>0379-3982</issn>
<publisher>
<publisher-name><![CDATA[Instituto Tecnológico de Costa Rica]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0379-39822016000800023</article-id>
<article-id pub-id-type="doi">10.18845/tm.v29i6.2899</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Selección teórica de adsorbentes potenciales naturales de bajo costo para la remoción de arsénico en el agua de consumo humano en Costa Rica]]></article-title>
<article-title xml:lang="en"><![CDATA[Potential natural low-cost adsorbents for the removal of arsenic in drinking water in Costa Rica]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Acuña-Piedra]]></surname>
<given-names><![CDATA[Andrea]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Araya-Obando]]></surname>
<given-names><![CDATA[Andrés]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Romero-Esquivel]]></surname>
<given-names><![CDATA[Luis G.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Tecnológico de Costa Rica  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Costa Rica</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Instituto Tecnológico de Costa Rica  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Costa Rica</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Instituto Tecnológico de Costa Rica  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Costa Rica</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>09</month>
<year>2016</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>09</month>
<year>2016</year>
</pub-date>
<volume>29</volume>
<fpage>23</fpage>
<lpage>34</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_arttext&amp;pid=S0379-39822016000800023&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_abstract&amp;pid=S0379-39822016000800023&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_pdf&amp;pid=S0379-39822016000800023&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El arsénico presente en agua puede llegar a causar serios problemas en la salud de los consumidores. En Costa Rica, se han identificado aguas de consumo humano con concentraciones mayores al límite permitido (10 µg/L). La adsorción del arsénico por un material adsorbente ha sido utilizada en otros países con éxito. Para ello, se han utilizado gran variedad de materiales adsorbentes sintéticos, naturales o subproductos de procesos industriales o agrícolas. Los adsorbentes sintéticos, por lo general, presentan alta capacidad de adsorción pero representan altos costos adquisitivos, contrariamente a los materiales naturales y de residuos de procesos que aunque tienen capacidades de adsorción menores, son más baratos y se encuentran más fácilmente. En el marco del contexto en mención, se presenta un análisis de las opciones de materiales naturales de origen local y de bajo costo adquisitivo, con un contenido relativamente alto de óxidos de hierro, aluminio y titanio, que podrían ser utilizados para remover arsénico del agua. Los materiales identificados son biotita, piedra caliza, diatomita, arenas ricas en magnetita y rocas piroclásticas de composición basáltica. Todos esos materiales son originarios de la zona de Guanacaste, afectada por la presencia de arsénico en agua.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Arsenic in water can lead to serious health problems for consumers. In Costa Rica, concentrations higher than the allowable limit (10 ug/L) have been identified in water for human consumption. The adsorption of arsenic on an adsorbent material has been used successfully in other countries for arsenic removal. To do this, a large variety of synthetic or natural products of industrial or agricultural processes are available as adsorbent materials. The synthetic adsorbents usually have high adsorption capacities but represent higher purchasing costs, contrary to natural materials and processes waste, which are cheaper and easier to find; nevertheless, they have a lower adsorption capacity. Within this context, an analysis of local options for natural materials at low cost is presented. They are materials with a relatively high content of iron oxides, aluminum and titanium, that could be used to remove arsenic from water. The identified materials are biotite, limestone, diatomite, magnetite enriched sands and pyroclastic rocks of basaltic composition. All these materials originate in the area of Guanacaste, affected by presence of arsenic in water.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Arsénico]]></kwd>
<kwd lng="es"><![CDATA[tratamiento de agua]]></kwd>
<kwd lng="es"><![CDATA[adsorción]]></kwd>
<kwd lng="es"><![CDATA[adsorbentes naturales]]></kwd>
<kwd lng="en"><![CDATA[Arsenic]]></kwd>
<kwd lng="en"><![CDATA[water treatment]]></kwd>
<kwd lng="en"><![CDATA[adsorption]]></kwd>
<kwd lng="en"><![CDATA[natural adsorbents]]></kwd>
<kwd lng="en"><![CDATA[Costa Rica]]></kwd>
</kwd-group>
</article-meta>
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