<?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>1692-3561</journal-id>
<journal-title><![CDATA[Biotecnología en el Sector Agropecuario y Agroindustrial]]></journal-title>
<abbrev-journal-title><![CDATA[Rev.Bio.Agro]]></abbrev-journal-title>
<issn>1692-3561</issn>
<publisher>
<publisher-name><![CDATA[Taller Editorial Universidad del Cauca]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1692-35612021000100054</article-id>
<article-id pub-id-type="doi">10.18684/bsaa(19)54-65</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Adsorption of chrome (VI) and mercury (II) in solution using hyacinth (Eichhornia crassipes)]]></article-title>
<article-title xml:lang="es"><![CDATA[Adsorción de cromo (VI) y mercurio (II) en solución utilizando jacinto (Eichhornia crassipes)]]></article-title>
<article-title xml:lang="pt"><![CDATA[Adsorção de crómio (VI) e mercúrio (II) em solução utilizando hiácito (Eichhornia crassipes)]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[TEJADA-TOVAR,]]></surname>
<given-names><![CDATA[CANDELARIA]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[PAZ,]]></surname>
<given-names><![CDATA[ISABEL]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[ACEVEDO-CORREA,]]></surname>
<given-names><![CDATA[DIOFANOR]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[ESPINOSA-FORTICH,]]></surname>
<given-names><![CDATA[MARÍA]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[LÓPEZ-BADEL,]]></surname>
<given-names><![CDATA[CRISTINA]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,University of Cartagena Research Group IDAB. ]]></institution>
<addr-line><![CDATA[Cartagena ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,University of Tolima Research Group CEDAGRITOL ]]></institution>
<addr-line><![CDATA[Ibagué ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,University of Cartagena Research Group IDAA ]]></institution>
<addr-line><![CDATA[Cartagena ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,aff4  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2021</year>
</pub-date>
<volume>19</volume>
<numero>1</numero>
<fpage>54</fpage>
<lpage>65</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S1692-35612021000100054&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S1692-35612021000100054&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S1692-35612021000100054&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT The existence of water hyacinth proliferation in wetlands of the Canal del Dique (Bolívar- Colombia) causes environmental problems because there is no final disposal of these. Therefore, it is necessary to study alternatives for its use. The objective of the study was to evaluate the behavior of the aquatic hyacinth as an adsorbent of Cr (VI) (VI) and Hg (II) (II) in a synthetically prepared solution. The lignocellulosic material was dried at 80°C for 24 h to remove moisture; then crushed and sieved with meshes of different particle sizes; characterized by elemental analysis to check for the presence of cellulose, hemicellulose, and lignin, as well as by Fourier Transform Infrared Spectrometry to verify the existence of functional groups responsible for the adsorption process. It was found that the best particle size was 1 mm, with a removal percentage of 73,4 and 79,3% for Cr (VI) and Hg (II), respectively. When establishing the adsorption kinetics, it was verified that the elimination percentage increases with time up to 5,5 h of contact with the Hg (II) solution and 3,8 h with the Cr (VI) solution.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN La existencia de proliferación de Jacinto acuático en los humedales del Canal del Dique (Bolívar-Colombia) causa problemas ambientales por no existir una disposición final de estos. Por lo tanto, es necesario estudiar alternativas para su uso. El objetivo del estudio fue evaluar el comportamiento del Jacinto acuático como adsorbente de cromo (VI) y mercurio (II) en una solución preparada sintéticamente. El material lignocelulósico se secó a 80°C durante 24 h para eliminar la humedad; luego se trituró y tamizó con mallas de diferentes tamaños de partículas; se caracterizó mediante análisis elementales para comprobar la presencia de celulosa, hemicelulosa y lignina, así como mediante espectrometría de infrarrojos por transformada de Fourier para verificar la existencia de grupos funcionales responsables del proceso de adsorción. Se encontró que el mejor tamaño de partícula era de 1 mm, con un porcentaje de remoción de 73,4 y 79,3% para el cromo y el mercurio, respectivamente. Al establecer la cinética de adsorción se comprobó que el porcentaje de eliminación aumenta con el tiempo hasta 5,5 h de contacto con la solución de mercurio y 3,8 h con la solución de cromo.]]></p></abstract>
<abstract abstract-type="short" xml:lang="pt"><p><![CDATA[RESUMO A existência de proliferação de jacintos de água nas zonas húmidas do Canal del Dique (Bolívar-Colombia) causa problemas ambientais porque não há disposição final dos mesmos. Portanto, é necessário estudar alternativas para o seu uso. O objetivo do estudo foi avaliar o comportamento do jacinto aquático como adsorvente de cromo (VI) e mercúrio (II) em uma solução sinteticamente preparada. O material lignocelulósico foi seco a 80°C durante 24 h para remover a humidade; depois triturado e peneirado com malhas de diferentes tamanhos de partículas; caracterizado pela análise elementar para verificar a presença de celulose, hemicelulose e lignina, bem como pela Espectrometria de Infravermelhos por Transformada de Fourier para verificar a existência de grupos funcionais responsáveis pelo processo de adsorção. Verificou-se que o melhor tamanho de partícula era de 1 mm, com uma percentagem de remoção de 73,4 e 79,3% para o crómio e o mercúrio, respectivamente. Ao estabelecer a cinética de adsorção verificou-se que a percentagem de eliminação aumenta com o tempo até 5,5 h de contacto com a solução de mercúrio e 3,8 h com a solução de crómio.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Residual Biomass]]></kwd>
<kwd lng="en"><![CDATA[Adsorption]]></kwd>
<kwd lng="en"><![CDATA[Heavy Metals]]></kwd>
<kwd lng="en"><![CDATA[Freundlich model]]></kwd>
<kwd lng="en"><![CDATA[Eichhornia crassipes]]></kwd>
<kwd lng="es"><![CDATA[Biomasa residual]]></kwd>
<kwd lng="es"><![CDATA[Adsorcion]]></kwd>
<kwd lng="es"><![CDATA[Metales pesados]]></kwd>
<kwd lng="es"><![CDATA[Modelo de Freundlich]]></kwd>
<kwd lng="es"><![CDATA[Eichhornia crassipes]]></kwd>
<kwd lng="pt"><![CDATA[Biomassa residual]]></kwd>
<kwd lng="pt"><![CDATA[Adsorção]]></kwd>
<kwd lng="pt"><![CDATA[Metais pesados]]></kwd>
<kwd lng="pt"><![CDATA[Modelo de Freundlich]]></kwd>
<kwd lng="pt"><![CDATA[Eichhornia crassipes.]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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