<?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>0188-4999</journal-id>
<journal-title><![CDATA[Revista internacional de contaminación ambiental]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. Int. Contam. Ambient]]></abbrev-journal-title>
<issn>0188-4999</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional Autónoma de México, Instituto de Ciencias de la Atmósfera y Cambio Climático]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0188-49992020000200383</article-id>
<article-id pub-id-type="doi">10.20937/rica.53233</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[APROVECHAMIENTO DE RESIDUO DE BIOMASA FÚNGICA EN LA OBTENCIÓN DE UN SISTEMA MAGNÉTICO NANOESTRUCTURADO PARA REMOVER ARSÉNICO DEL AGUA]]></article-title>
<article-title xml:lang="en"><![CDATA[WASTE MANAGEMENT OF FUNGAL BIOMASS FOR THE OBTAINMENT OF A NANOSTRUCTURED MAGNETIC SYSTEM TO REMOVE ARSENIC FROM WATER]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Martínez-Peña]]></surname>
<given-names><![CDATA[Vania Isabel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ilyina]]></surname>
<given-names><![CDATA[Anna]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Álvarez-Reyna]]></surname>
<given-names><![CDATA[Vicente de Paul]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ramos-González]]></surname>
<given-names><![CDATA[Rodolfo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Contreras-Esquivel]]></surname>
<given-names><![CDATA[Juan Carlos]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Chávez-González]]></surname>
<given-names><![CDATA[Mónica Lizeth]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vásquez-Arroyo]]></surname>
<given-names><![CDATA[Jesús]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma Agraria Antonio Narro  ]]></institution>
<addr-line><![CDATA[Torreón Coahuila]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma de Coahuila Facultad de Ciencias Químicas ]]></institution>
<addr-line><![CDATA[Saltillo Coahuila]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Autónoma de Coahuila  ]]></institution>
<addr-line><![CDATA[Saltillo Coahuila]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad Juárez del Estado de Durango Facultad de Ciencias Químicas ]]></institution>
<addr-line><![CDATA[Gómez Palacio Durango]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2020</year>
</pub-date>
<volume>36</volume>
<numero>2</numero>
<fpage>383</fpage>
<lpage>397</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0188-49992020000200383&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0188-49992020000200383&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0188-49992020000200383&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN La aplicación de hongos filamentosos en procesos biotecnológicos conduce a la acumulación de biomasa como residuo. Sin embargo, la biomasa fúngica contiene diversos biopolímeros entre los cuales se encuentra la quitina -el precursor del quitosán. En el presente trabajo la biomasa fúngica se utilizó como materia prima para la extracción del biopolímero que contiene quitosán mediante el método ácido/alcalino. Se aplicaron diferentes condiciones de extracción: la concentración de álcali, el tiempo y la temperatura de los tratamientos. El biopolímero fue caracterizado y aplicado en la síntesis de ferrita de níquel por el método de coprecipitación, demostrando la posibilidad de obtener un sistema magnético nanoestructurado recubierto con quitosán fúngico en una sola etapa. Las propiedades del material magnético nanoestructurado obtenido se evaluaron por difracción de rayos-X, magnetometría de muestra vibrante y espectrometría infrarroja por transformada de Fourier. Se demostró que el material magnético nanoestructurado recubierto con quitosán fúngico remueve el 100 % del arsénico presente en muestras de agua proveniente de un pozo de la Comarca Lagunera (estados de Durango y Coahuila, México), así como otros iones no nocivos para la salud. Se comprobó que la capacidad para remover el arsénico se conserva en al menos 15 ensayos. Los resultados del presente trabajo demuestran la posibilidad de aprovechar el residuo de biomasa fúngica, actualmente poco utilizado, para el diseño de nanomateriales magnéticos con impacto en la eliminación de contaminantes tóxicos del agua mediante la remoción magnética.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT Application of filamentous fungi in biotechnological processes leads to the accumulation of biomass as waste. However, it is known that the fungal biomass contains various biopolymers among which is chitin -the precursor of chitosan. In the present work, fungal biomass was used as raw material for the extraction of a biopolymer containing chitosan by the acid/alkaline method. Different extraction conditions were assayed: the concentration of alkali, time, and temperature of treatments. The biopolymer was characterized and applied in the synthesis of nickel ferrite by the coprecipitation method demonstrating the possibility of obtaining a nanostructured magnetic system coated with fungal chitosan in a single step. The properties of the obtained nanostructured magnetic material were evaluated by X-ray diffraction, vibrating sample magnetometry, and Fourier-transform infrared spectroscopy. It was demonstrated that the nanostructured magnetic material coated with fungal chitosan removes 100 % of the arsenic present in a sample from a well of Comarca Lagunera (states of Durango and Coahuila, Mexico), as well as other ions that are not harmful to health. It was found that the capacity to remove arsenic is conserved in at least 15 tests of magnetic separation of this toxic pollutant. The results of the present work demonstrate the possibility of taking advantage of the fungal biomass residue, currently little used, for the design of magnetic nanomaterials with impact on the elimination of water from toxic pollutants by magnetic separation.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Aspergillus niger]]></kwd>
<kwd lng="es"><![CDATA[quitosán]]></kwd>
<kwd lng="es"><![CDATA[nanopartículas magnéticas]]></kwd>
<kwd lng="es"><![CDATA[remoción de arsénico]]></kwd>
<kwd lng="en"><![CDATA[Aspergillus niger]]></kwd>
<kwd lng="en"><![CDATA[chitosan]]></kwd>
<kwd lng="en"><![CDATA[magnetic nanoparticles]]></kwd>
<kwd lng="en"><![CDATA[arsenic removal]]></kwd>
</kwd-group>
</article-meta>
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