<?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>2222-145X</journal-id>
<journal-title><![CDATA[Reportes científicos de la FACEN]]></journal-title>
<abbrev-journal-title><![CDATA[Rep. cient. FACEN]]></abbrev-journal-title>
<issn>2222-145X</issn>
<publisher>
<publisher-name><![CDATA[Facultad de Ciencias Exactas y Naturales]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2222-145X2025000100074</article-id>
<article-id pub-id-type="doi">10.18004/rcfacen.2025.16.1.074</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Evaluación de remoción de cromo en agua a escala laboratorio empleando Epipremnum aureum (Linden &amp; André) G.S. Bunting]]></article-title>
<article-title xml:lang="en"><![CDATA[Evaluation of chromium removal in water at laboratory scale USING Epipremnum aureum (Linden &amp; André) G.S. Bunting]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Velázquez Decoud]]></surname>
<given-names><![CDATA[Ana Lorena]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Benítez]]></surname>
<given-names><![CDATA[Julio César]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ferreira]]></surname>
<given-names><![CDATA[Francisco Paulo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional de Asunción Facultad de Ciencias Exactas y Naturales Laboratorio de Calidad de Agua]]></institution>
<addr-line><![CDATA[San Lorenzo ]]></addr-line>
<country>Paraguay</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Nacional de Asunción Facultad de Ciencias Exactas y Naturales Departamento de Biotecnología]]></institution>
<addr-line><![CDATA[San Lorenzo ]]></addr-line>
<country>Paraguay</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Nacional de Asunción Facultad de Ciencias Exactas y Naturales Departamento de Biología]]></institution>
<addr-line><![CDATA[San Lorenzo ]]></addr-line>
<country>Paraguay</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2025</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2025</year>
</pub-date>
<volume>16</volume>
<numero>1</numero>
<fpage>74</fpage>
<lpage>82</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.iics.una.py/scielo.php?script=sci_arttext&amp;pid=S2222-145X2025000100074&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.iics.una.py/scielo.php?script=sci_abstract&amp;pid=S2222-145X2025000100074&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.iics.una.py/scielo.php?script=sci_pdf&amp;pid=S2222-145X2025000100074&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: La investigación se llevó a cabo utilizando el método de fitorremediación en escala de laboratorio, empleando la planta de Epipremnum aureum (Pothos) y agua de grifo enriquecida con 2 mg.L-1. de cromo, un contaminante inorgánico que amenaza la salud y el medio ambiente. El objetivo de este estudio fue evaluar la capacidad de esta especie para remover dicho contaminante, exponiéndola al agua enriquecida. Se utilizaron unidades experimentales que consistían en envases de vidrio con 500 mL del fortificado, con tres ejemplares de Pothos por envase en triplicado para grupo experimental, y en duplicado para grupo testigo. Estas unidades se mantuvieron durante 13 días en un recinto con luz artificial a una temperatura de 22 ± 2ºC y una humedad del ambiente de 50-70%. Se realizaron ensayos para determinar la concentración de cromo total en la solución enriquecida al inicio del experimento (día 1) y en los días 5, 9 y 13, utilizando Espectrofotometría UV-Visible. Se obtuvo en promedio una remoción de cromo de 0.340 mg.L-1 (% R=17.89), y una acumulación de 3.03 mg.kg-1 en su sistema al final del tratamiento . Además, se estimó el tiempo de vida media del cromo, obteniendo un valor de 39.16 días. Se observaron diferencias significativas en los valores de pH, CE y OD en la solución enriquecida. Basándonos en los resultados de este estudio, se concluye que la planta de E.aureum tiene la capacidad de remover cromo, y se sugiere realizar más investigaciones en diferentes escalas, concentraciones, y metodologías, utilizando estos resultados como antecedente.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: The research was carried out using the phytoremediation method at laboratory scale, using the plant Epipremnum aureum (Pothos) plant and tap water enriched with 2 mg.L-1. of chromium, an inorganic pollutant that threatens health and the environment. The objective of this study was to evaluate the ability of this species to remove this contaminant by exposing it to the enriched water. Experimental units consisting of glass containers containing 500 mL of enriched water were used, with three Pothos specimens per container in triplicate for the experimental group and in duplicate for the control group. These units were kept for 13 days in an enclosure with artificial light at a temperature of 22 ± 2ºC and an ambient humidity of 50-70%. Tests were performed out to determine the concentration of total chromium in the enriched solution at the beginning of the experiment (day 1) and on days 5, 9 and 13, using UV-Visible Spectrophotometry. An average chromium removal of 0.340 mg.L-1 (% R=17.89) was obtained, and an accumulation of 3.03 mg.kg-1 in their system at the end of the treatment. In addition, the half-life time of chromium was estimated to be 39.16 days. Significant differences were observed in pH, EC and DO values in the enriched solution. Based on the results of this study, it is concluded that the E.aureum plant has the ability to remove chromium, and it is suggested that further research be conducted at different scales, concentrations, and methodologies, using these results as a background.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[remoción cromo]]></kwd>
<kwd lng="es"><![CDATA[fitorremediación pothos]]></kwd>
<kwd lng="es"><![CDATA[Epipremnum aureum]]></kwd>
<kwd lng="es"><![CDATA[biorremediación]]></kwd>
<kwd lng="es"><![CDATA[metales pesados]]></kwd>
<kwd lng="en"><![CDATA[chromium removal]]></kwd>
<kwd lng="en"><![CDATA[phytoremediation pothos]]></kwd>
<kwd lng="en"><![CDATA[Epipremnum aureum]]></kwd>
<kwd lng="en"><![CDATA[bioremediation]]></kwd>
<kwd lng="en"><![CDATA[heavy metals]]></kwd>
</kwd-group>
</article-meta>
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<article-title xml:lang=""><![CDATA[Phytoaccumulation of trace elements by wetland plants: I. Duckweed.]]></article-title>
<source><![CDATA[Journal of Environmental Quality]]></source>
<year>1998</year>
<volume>27</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>715-21</page-range></nlm-citation>
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</article>
