<?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>1909-0455</journal-id>
<journal-title><![CDATA[Producción + Limpia]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. P+L]]></abbrev-journal-title>
<issn>1909-0455</issn>
<publisher>
<publisher-name><![CDATA[Corporación Universitaria Lasallista]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1909-04552018000100030</article-id>
<article-id pub-id-type="doi">10.22507/pml.v13n1a3</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Remoción de Cr (Vi) en residuos líquidos de laboratorios de servicios analíticos por fotocatálisis heterogénea y bioadsorción]]></article-title>
<article-title xml:lang="en"><![CDATA[Removal of Cr (VI) by heterogenic photocatalysis and bioadsortion in liquid waste from laboratories of analytical services]]></article-title>
<article-title xml:lang="pt"><![CDATA[Remoção de Cr (Vi) por fotocatálise heterogênica e bioadsorção em resíduos líquidos de laboratórios de serviços analíticos]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mera-Córdoba]]></surname>
<given-names><![CDATA[Jenny Alejandra]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Espinosa-Narváez]]></surname>
<given-names><![CDATA[Gloria Sandra]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Murillo-Arango]]></surname>
<given-names><![CDATA[Walter]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Institución Universitaria CESMAG  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad de Nariño  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad de Manizales (CIMAD)  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</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>13</volume>
<numero>1</numero>
<fpage>30</fpage>
<lpage>42</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S1909-04552018000100030&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S1909-04552018000100030&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S1909-04552018000100030&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Introducción. Los laboratorios del sector educativo que ofrecen servicios analíticos y que en sus métodos generen residuos peligrosos de Cr(VI) deben adoptar medidas especiales para su eliminación por ser una especie altamente cancerígena y de un impacto ambiental negativo.  Objetivo. se evaluaron las alternativas ambientales fotocatálisis heterogénea y bioadsorción en la remoción de Cr(VI) en residuos líquidos generados en laboratorios de servicios analíticos de la Universidad de Nariño.  Materiales y métodos. En los dos métodos se aplicó un diseño factorial 23 con niveles alto y bajo, permitiendo optimizar para la fotocatálisis las variables: pH= 1, cantidad de fotocatalizador (TiO2) 0,5 g y 30 minutos de irradiación con luz UV, y para la bioadsorción las variables: cantidad de bioadsorbente (cascara de plátano verde) 1g, pH= 1 y tiempo de contacto de 60 minutos a partir de una concentración de 100 mg / L de Cr(VI). Se evaluó la eficiencia de los dos métodos por comparación de medias y la valoración de la viabilidad técnica y ambiental, a partir de matrices.  Resultados. A partir de los residuos líquidos con una concentración de 2.116 mg / L de cromo total, se obtuvieron porcentajes de remoción del 96,07 ± 0,65 % para la fotocatálisis y del 99,94 % ± 0,01 para el proceso de bioadsorción, demostrando este último un mejor desempeño. Finalmente, la mejor viabilidad técnica y ambiental se obtuvo para la bioadsorción.  Conclusión. La bioadsorción se muestra como un proceso ecoeficiente por lo que se presenta como una opción ambientalmente sostenible para la eliminación de Cr(VI) dentro de la gestión de residuos peligrosos.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Introduction. Laboratories in the educational sector that offer analytical services and generate dangerous residues of Cr (VI) in their methods must adopt special measures for its elimination as it is a highly carcinogenic species of a negative environmental impact.  Objective. Heterogeneous photocatalysis and bioadsorption environmental alternatives were evaluated in the removal of Cr (VI) in liquid waste generated in analytical services laboratories of the University of Nariño.  Materials and methods. In both methods a factorial design 23 with high and low levels was applied, allowing to optimize the variables: pH = 1, amount of photocatalyst (TiO2) 0.5 g and 30 minutes of irradiation with UV light for the photocatalysis; and the variables: amount of bioadsorbent (green banana peel) 1g, pH = 1 and contact time of 60 minutes from Cr (VI) concentration of 100 mg / L for bioadsorption. The efficiency of the two methods was evaluated by comparing means and the assessment of technical and environmental feasibilitiy from matrices.  Results.  From the liquid waste with a total chromium concentration of 2,116 mg / L, removal rates of 96.07 ± 0.65 % were obtained for photocatalysis and 99.9 % ± 0.01 for the bioadsorption process; the latter showing a better performance. Finally, the best technical and environmental feasibility was obtained for bioadsorption.  Conclusion: Bioadsorption is shown as an eco-efficient process and is therefore presented as an environmentally sustainable option for the elimination of Cr (VI) in the management of hazardous waste.]]></p></abstract>
<abstract abstract-type="short" xml:lang="pt"><p><![CDATA[Resumo  Introdução. Os laboratórios do setor educacional que oferecem serviços analíticos e que, em seus métodos, geram resíduos perigosos de Cr (VI), devem adotar medidas especiais para sua eliminação, pois são altamente carcinogênicos e têm impacto ambiental negativo.  Objetivo. foram avaliadas a fotocatálise heterogênea e a bioadsorção na remoção de Cr (VI) em resíduos líquidos gerados em laboratórios de serviços analíticos da Universidade de Nariño.  Materiais e métodos. Em ambos os métodos foi aplicado um planejamento fatorial 23 com altos e baixos níveis, permitindo otimizar para a fotocatálise as variáveis: pH = 1, quantidade de fotocatalisador (TiO2) 0,5 g e 30 minutos de irradiação com luz UV e para bioadsorção a variáveis: quantidade de bioadsorvente (casca de banana verde) 1g, pH = 1 e tempo de contato de 60 minutos a partir de uma concentração de 100 mg / L de Cr (VI). Avaliou-se a eficiência dos métodos por comparação de medias e a valoração da viabilidade técnica e ambiental, a partir de matrizes.  Resultados. a partir dos resíduos líquidos com uma concentração de 2,116 mg/L de cromo total, se obtiveram porcentagens de remoção do 96,07 ± 0,65 % para a fotocatálise e do 99,94 % ± 0,01 para o processo de bioadsorção, demonstrando este último um melhor desempenho. Finalmente, a melhor viabilidade técnica e ambiental se obteve para a bioadsorção.  Conclusão: A bioadsorção se apresenta como um processo ecoeficiente, portanto se apresenta como uma opção ambientalmente sustentável para a eliminação de Cr (VI) dentro da gestão de resíduos perigosos.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[impacto ambiental, método experimental (tesauros)]]></kwd>
<kwd lng="es"><![CDATA[fotocatálisis, bioadsorción, cromo hexavalente]]></kwd>
<kwd lng="en"><![CDATA[Environmental impact, experimental method (Thesaurus)]]></kwd>
<kwd lng="en"><![CDATA[photocatalysis, bioadsorption, hexavalent chromium]]></kwd>
<kwd lng="pt"><![CDATA[hidrometalurgia]]></kwd>
<kwd lng="pt"><![CDATA[reciclagem]]></kwd>
<kwd lng="pt"><![CDATA[baterias usadas]]></kwd>
<kwd lng="pt"><![CDATA[níquel]]></kwd>
<kwd lng="pt"><![CDATA[terras raras]]></kwd>
</kwd-group>
</article-meta>
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