<?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>0120-6230</journal-id>
<journal-title><![CDATA[Revista Facultad de Ingeniería Universidad de Antioquia]]></journal-title>
<abbrev-journal-title><![CDATA[Rev.fac.ing.univ. Antioquia]]></abbrev-journal-title>
<issn>0120-6230</issn>
<publisher>
<publisher-name><![CDATA[Facultad de Ingeniería, Universidad de Antioquia]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0120-62302022000200044</article-id>
<article-id pub-id-type="doi">10.17533/udea.redin.20201112</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Heavy metal removal by biopolymers-based formulations with native potato starch/nopal mucilage]]></article-title>
<article-title xml:lang="es"><![CDATA[Remoción de metales pesados por biopolímeros formulados con almidón de papa nativa/mucílago de nopal]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Choque-Quispe]]></surname>
<given-names><![CDATA[David]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ramos-Pacheco]]></surname>
<given-names><![CDATA[Betsy S.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ligarda-Samanez]]></surname>
<given-names><![CDATA[Carlos A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Barboza-Palomino]]></surname>
<given-names><![CDATA[Gloria I.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Kari-Ferro]]></surname>
<given-names><![CDATA[Aydeé]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Taipe-Pardo]]></surname>
<given-names><![CDATA[Fredy]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Choque-Quispe]]></surname>
<given-names><![CDATA[Yudith]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional José María Arguedas Departamento de Ingeniería Agro-Industrial ]]></institution>
<addr-line><![CDATA[Andahuaylas ]]></addr-line>
<country>Peru</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Nacional San Cristobal de Huamanga Departmento de Ingeniería Química ]]></institution>
<addr-line><![CDATA[Ayacucho ]]></addr-line>
<country>Peru</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Micaela Bastidas National University Department of Agro-ecological Engineering ]]></institution>
<addr-line><![CDATA[Abancay ]]></addr-line>
<country>Peru</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2022</year>
</pub-date>
<numero>103</numero>
<fpage>44</fpage>
<lpage>50</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0120-62302022000200044&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0120-62302022000200044&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0120-62302022000200044&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT The contamination of water bodies by heavy metals is a critical problem for human health and ecosystems, and it can bioaccumulate in organisms to toxic levels and even lead to the living being&#8217;s death. This research aimed to synthesize and characterize a biopolymer with the capacity to remove heavy metals in wastewater, elaborated from potato starch, glycerin, and nopal mucilage. Native potato starch of the Allcca sipas variety was extracted by conventional methods; the mucilage was extracted with ethanol. Four formulations of biopolymers were synthesized at 60 and 70 °C. The solubility, structural characteristics, and adsorption capacity of heavy metals were evaluated. Starch, mucilage, and biopolymers presented predominant functional groups as -OH, -C-O-, -NH-, -C-H-, -C-OH determined by FTIR, allowing to remove up to 50.18% of Al, 56.81% of As, 35.95% of Cr, 37.43% of Hg and 73.22% of Pb determined through an ICPE-OES, for a contact time of 100 minutes at pH 5.0, heavy metal removal and solubility were significantly influenced (p-value &lt; 0.05) by the addition of starch and mucilage. The synthesized biopolymers present a high capacity for heavy metal removal in wastewater.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN La contaminación de los cuerpos hídricos por metales pesados es un problema crítico para la salud humana y ecosistemas, pudiendo bioacumularse hasta niveles tóxicos e incluso llevar a la muerte de seres vivos. El objetivo de la investigación fue sintetizar y caracterizar un biopolímero con capacidad de remoción de metales pesados en aguas residuales, elaborado a partir de almidón de papa, glicerina y mucílago de nopal. Se extrajo almidón de papa nativa de la variedad Allcca sipas; el mucílago fue extraído con etanol. Se sintetizaron 4 formulaciones de biopolímeros a 60 y 70 °C. Se evaluó la solubilidad, las características estructurales y la capacidad de adsorción de metales pesados. El almidón, mucílago y los biopolímeros presentaron grupos funcionales predominantes como -OH, -C-O-, -NH-, -C-H-, -C-OH determinado por FTIR, permitiendo remover hasta 50,18% de Al, 56,81% de As, 35,95% de Cr, 37,43% de Hg y 73,22% de Pb determinados a través de un ICPE-OES, para un tiempo de contacto de 100 minutos a pH 5.0, la remoción de metales pesados y la solubilidad fueron influenciados significativamente (p-value &lt; 0,05) por la adición de almidón y mucílago. Los biopolímeros sintetizados presentan alta capacidad de remoción de metales pesados en aguas residuales.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Functional groups]]></kwd>
<kwd lng="en"><![CDATA[heavy metal removal]]></kwd>
<kwd lng="en"><![CDATA[native potato starch]]></kwd>
<kwd lng="en"><![CDATA[nopal mucilage]]></kwd>
<kwd lng="en"><![CDATA[solubility]]></kwd>
<kwd lng="es"><![CDATA[Grupos funcionales]]></kwd>
<kwd lng="es"><![CDATA[remoción de metales pesados]]></kwd>
<kwd lng="es"><![CDATA[almidón de papa nativa]]></kwd>
<kwd lng="es"><![CDATA[mucilago de nopal]]></kwd>
<kwd lng="es"><![CDATA[solubilidad]]></kwd>
</kwd-group>
</article-meta>
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