<?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>0123-921X</journal-id>
<journal-title><![CDATA[Tecnura]]></journal-title>
<abbrev-journal-title><![CDATA[Tecnura]]></abbrev-journal-title>
<issn>0123-921X</issn>
<publisher>
<publisher-name><![CDATA[Universidad Distrital Francisco José de Caldas]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0123-921X2021000200028</article-id>
<article-id pub-id-type="doi">10.14483/22487638.17088</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Electrocoagulation as an Alternative for the Removal of Chromium (VI) in Solution]]></article-title>
<article-title xml:lang="es"><![CDATA[Electrocoagulación como alternativa para eliminación de cromo (VI) en solución]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Villabona-Ortíz]]></surname>
<given-names><![CDATA[Ángel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<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[Contreras-Amaya]]></surname>
<given-names><![CDATA[Rafael]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Cartagena  ]]></institution>
<addr-line><![CDATA[Cartagena ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad de Cartagena  ]]></institution>
<addr-line><![CDATA[Cartagena ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad de Cartagena  ]]></institution>
<addr-line><![CDATA[Cartagena ]]></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>25</volume>
<numero>68</numero>
<fpage>28</fpage>
<lpage>42</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0123-921X2021000200028&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0123-921X2021000200028&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0123-921X2021000200028&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Objective: The pollution of water bodies, a product of effluent discharges contaminated with Chromium (VI), is a widely studied environmental problem due to the toxic effects of this pollutant on human health and the environment. The aim of this work is to study the elimination of hexavalent chromium by means of the electrocoagulation method with iron and aluminum electrodes in a monopolar configuration. The effect of residence time, voltage, and the number of electrodes over removal efficiency was evaluated.  Methodology: The experiments were conducted in a 3 L batch electrocoagulation cell, using 10 and 6 aluminum and stainless-steel plates, respectively, as electrodes connected at a distance of 1,5 cm in a monopolar configuration and parallel to the power source. A contaminated solution with Cr(VI) was treated at a concentration of 50 mg/L, evaluating two levels of residence time (20 and 30 min), voltage (20 and 30 V), and number of electrodes (6 and 10).  Results: Removal percentages between 60,15 and 92,9% were obtained. It was found that the most positively influential variable in the process is the increase in residence time. It can be inferred that electrocoagulation performs better at lower voltages and longer residence times, and the joint effect of the increase in the number of electrodes and the contact time increases the performance of the process, thus achieving greater removal.  Conclusions: The Cr(IV) reduction process by electrocoagulation has the potential to be used for the removal of heavy metals from water in a cost-effective way.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Contexto: La contaminación de los cuerpos de agua, producto de los vertimientos de efluentes contaminados con Cromo (VI), es una problemática ambiental ampliamente estudiada, debido a los efectos tóxicos de este contaminante sobre la salud humana y el ambiente. El objetivo del presente trabajo es estudiar la eliminación de cromo hexavalente usando el método de electrocoagulación con electrodos de hierro y aluminio en configuración monopolar. Se evaluó el efecto del tiempo de residencia, del voltaje y del número de electrodos sobre la eficiencia de remoción.  Metodología: Los experimentos se realizaron en una celda de electrocoagulación por lotes de 3 L, utilizando 10 y 6 placas de aluminio y acero inoxidable, respectivamente, como electrodos conectados a una distancia de 1,5 cm en configuración monopolar, en paralelo a la fuente de energía. Se trató una solución contaminada con Cr(VI) a una concentración de 50 mg/L, evaluando dos niveles de tiempo de residencia (20 y 30 min), voltaje (20 y 30 V) y número de electrodos (6 y 10 electrodos).  Resultados: Se obtuvieron porcentajes de remoción entre 60,15 y 92,9%. Se encontró que la variable con mayor incidencia positiva sobre el proceso es el aumento del tiempo de residencia. Se puede inferir que la electrocoagulación se desempeña mejor a voltajes inferiores y tiempos de residencia mayores, y que el efecto conjunto del aumento de la cantidad de electrodos y el tiempo de contacto incrementa el rendimiento del proceso, logrando así mayor remoción.  Conclusiones: El proceso de reducción de cromo (VI) mediante electrocoagulación tiene el potencial de utilizarse para la eliminación de metales pesados del agua de manera rentable.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Cr(VI)]]></kwd>
<kwd lng="en"><![CDATA[aluminum electrodes]]></kwd>
<kwd lng="en"><![CDATA[iron electrodes.]]></kwd>
<kwd lng="es"><![CDATA[Cr(VI)]]></kwd>
<kwd lng="es"><![CDATA[electrodos de aluminio]]></kwd>
<kwd lng="es"><![CDATA[electrodos de hierro.]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Aboulhassan]]></surname>
<given-names><![CDATA[M. A.]]></given-names>
</name>
<name>
<surname><![CDATA[El Ouarghi]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
<name>
<surname><![CDATA[Ait Benichou]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Ait Boughrous]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Khalil]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Influence of experimental parameters in the treatment of tannery wastewater by electrocoagulation]]></article-title>
<source><![CDATA[Separation Science and Technology (Philadelphia)]]></source>
<year>2018</year>
<volume>53</volume>
<numero>17</numero>
<issue>17</issue>
<page-range>2717-26</page-range></nlm-citation>
</ref>
<ref id="B2">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Al-Qodah]]></surname>
<given-names><![CDATA[Z.]]></given-names>
</name>
<name>
<surname><![CDATA[Al-Shannag]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Heavy metal ions removal from wastewater using electrocoagulation processes: A comprehensive review]]></article-title>
<source><![CDATA[Separation Science and Technology (Philadelphia)]]></source>
<year>2017</year>
<volume>52</volume>
<numero>17</numero>
<issue>17</issue>
<page-range>2649-76</page-range></nlm-citation>
</ref>
<ref id="B3">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ali Maitlo]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
<name>
<surname><![CDATA[Kim]]></surname>
<given-names><![CDATA[K. H.]]></given-names>
</name>
<name>
<surname><![CDATA[Yang Park]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Hwan Kim]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Removal mechanism for chromium (VI) in groundwater with cost-effective iron-air fuel cell electrocoagulation]]></article-title>
<source><![CDATA[Separation and Purification Technology]]></source>
<year>2019</year>
<numero>213</numero>
<issue>213</issue>
<page-range>378-88</page-range></nlm-citation>
</ref>
<ref id="B4">
<nlm-citation citation-type="book">
<collab>ASTM</collab>
<source><![CDATA[D1687- 17. Standard Test Methods for Chromium in Water]]></source>
<year>2017</year>
<publisher-name><![CDATA[ASTM International]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B5">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Aoudj]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Cheknane]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
<name>
<surname><![CDATA[Zemmouri]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
<name>
<surname><![CDATA[Zermane]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<name>
<surname><![CDATA[Khelifa]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Hecini]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Drouiche]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Kinetics and adsorption isotherm for the removal of fluoride and chromium (VI) from wastewater by electrocoagulation]]></article-title>
<source><![CDATA[Desalination and Water Treatment]]></source>
<year>2017</year>
<numero>82</numero>
<issue>82</issue>
<page-range>262-70</page-range></nlm-citation>
</ref>
<ref id="B6">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Babakhouya]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
<name>
<surname><![CDATA[Abdouni]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Louhab]]></surname>
<given-names><![CDATA[K.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Electrochemical chromium(VI) recovery process by conducting composite, Olive Pomace/Pani]]></article-title>
<source><![CDATA[Revue Roumaine de Chimie]]></source>
<year>2019</year>
<volume>64</volume>
<numero>9</numero>
<issue>9</issue>
<page-range>747-53</page-range></nlm-citation>
</ref>
<ref id="B7">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Chouhan]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Thakur]]></surname>
<given-names><![CDATA[L. S.]]></given-names>
</name>
<name>
<surname><![CDATA[Patidar]]></surname>
<given-names><![CDATA[K.]]></given-names>
</name>
<name>
<surname><![CDATA[Varma]]></surname>
<given-names><![CDATA[A. K.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A Review on Removal of Heavy Metals from Water / Wastewater by Electrocoagulation Process.]]></article-title>
<source><![CDATA[International Research Journal of Engineering and Technology (IRJET)]]></source>
<year>2018</year>
<volume>5</volume>
<numero>12</numero>
<issue>12</issue>
<page-range>934-44</page-range></nlm-citation>
</ref>
<ref id="B8">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Das]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Nandi]]></surname>
<given-names><![CDATA[B. K.]]></given-names>
</name>
</person-group>
<source><![CDATA[Removal of Hexavalent Chromium from Wastewater by Electrocoagulation (EC): Parametric Evaluation, Kinetic Study and Operating Cost]]></source>
<year>2020</year>
<numero>73</numero>
<issue>73</issue>
<page-range>2053-60</page-range><publisher-name><![CDATA[Transactions of the Indian Institute of Metals]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B9">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Elabbas]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Ouazzani]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
<name>
<surname><![CDATA[Mandi]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
<name>
<surname><![CDATA[Berrekhis]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<name>
<surname><![CDATA[Perdicakis]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Pontvianne]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Pons]]></surname>
<given-names><![CDATA[M. N.]]></given-names>
</name>
<name>
<surname><![CDATA[Lapicque]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<name>
<surname><![CDATA[Leclerc]]></surname>
<given-names><![CDATA[J. P.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Treatment of highly concentrated tannery wastewater using electrocoagulation: Influence of the quality of aluminium used for the electrode]]></article-title>
<source><![CDATA[Journal of Hazardous Materials]]></source>
<year>2016</year>
<numero>319</numero>
<issue>319</issue>
<page-range>69-77</page-range></nlm-citation>
</ref>
<ref id="B10">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Elabbas]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Adjeroud]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
<name>
<surname><![CDATA[Mandi]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
<name>
<surname><![CDATA[Berrekhis]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<name>
<surname><![CDATA[Pons]]></surname>
<given-names><![CDATA[M. N.]]></given-names>
</name>
<name>
<surname><![CDATA[Leclerc]]></surname>
<given-names><![CDATA[J. P.]]></given-names>
</name>
<name>
<surname><![CDATA[Ouazzani]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Eggshell adsorption process coupled with electrocoagulation for improvement of chromium removal from tanning wastewater]]></article-title>
<source><![CDATA[International Journal of Environmental Analytical Chemistry]]></source>
<year>2020</year>
</nlm-citation>
</ref>
<ref id="B11">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Emamjomeh]]></surname>
<given-names><![CDATA[M. M.]]></given-names>
</name>
<name>
<surname><![CDATA[Jamali]]></surname>
<given-names><![CDATA[H. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Moradnia]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Optimization of nitrate removal efficiency and energy consumption using a batch monopolar electrocoagulation: Prediction by RSM method.]]></article-title>
<source><![CDATA[Journal of Environmental Engineering]]></source>
<year>2017</year>
<volume>143</volume>
<numero>7</numero>
<issue>7</issue>
<page-range>04017022</page-range></nlm-citation>
</ref>
<ref id="B12">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Genawi]]></surname>
<given-names><![CDATA[N. M.]]></given-names>
</name>
<name>
<surname><![CDATA[Ibrahim]]></surname>
<given-names><![CDATA[M. H.]]></given-names>
</name>
<name>
<surname><![CDATA[El-Naas]]></surname>
<given-names><![CDATA[M. H.]]></given-names>
</name>
<name>
<surname><![CDATA[Alshaik]]></surname>
<given-names><![CDATA[A. E.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Chromium removal from tannery wastewater by electrocoagulation: Optimization and sludge characterization.]]></article-title>
<source><![CDATA[Water]]></source>
<year>2020</year>
<volume>12</volume>
<numero>5</numero>
<issue>5</issue>
<page-range>1374</page-range></nlm-citation>
</ref>
<ref id="B13">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[He]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Gu]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
<name>
<surname><![CDATA[Xu]]></surname>
<given-names><![CDATA[Z.]]></given-names>
</name>
<name>
<surname><![CDATA[He]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
<name>
<surname><![CDATA[Fu]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Han]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<name>
<surname><![CDATA[Huang]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
<name>
<surname><![CDATA[Pan]]></surname>
<given-names><![CDATA[X.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Cleaning chromium pollution in aquatic environments by bioremediation, photocatalytic remediation, electrochemical remediation and coupled remediation systems.]]></article-title>
<source><![CDATA[Environmental Chemistry Letters]]></source>
<year>2020</year>
<volume>18</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>561-76</page-range></nlm-citation>
</ref>
<ref id="B14">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Heffron]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Marhefke]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Mayer]]></surname>
<given-names><![CDATA[B. K.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Removal of trace metal contaminants from potable water by electrocoagulation]]></article-title>
<source><![CDATA[Scientific Reports]]></source>
<year>2016</year>
<numero>6</numero>
<issue>6</issue>
<page-range>28478</page-range></nlm-citation>
</ref>
<ref id="B15">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Khan]]></surname>
<given-names><![CDATA[S. U.]]></given-names>
</name>
<name>
<surname><![CDATA[Islam]]></surname>
<given-names><![CDATA[D. T.]]></given-names>
</name>
<name>
<surname><![CDATA[Farooqi]]></surname>
<given-names><![CDATA[I. H.]]></given-names>
</name>
<name>
<surname><![CDATA[Ayub]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Basheer]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Hexavalent chromium removal in an electrocoagulation column reactor: Process optimization using CCD, adsorption kinetics and pH modulated sludge formation]]></article-title>
<source><![CDATA[Process Safety and Environmental Protection]]></source>
<year>2019</year>
<numero>122</numero>
<issue>122</issue>
<page-range>118-30</page-range></nlm-citation>
</ref>
<ref id="B16">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Kim]]></surname>
<given-names><![CDATA[T.]]></given-names>
</name>
<name>
<surname><![CDATA[Kim]]></surname>
<given-names><![CDATA[T. K.]]></given-names>
</name>
<name>
<surname><![CDATA[Zoh]]></surname>
<given-names><![CDATA[K. D.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Removal mechanism of heavy metal (Cu, Ni, Zn, and Cr) in the presence of cyanide during electrocoagulation using Fe and Al electrodes]]></article-title>
<source><![CDATA[Journal of Water Process Engineering]]></source>
<year>2020</year>
<numero>33</numero>
<issue>33</issue>
<page-range>101109</page-range></nlm-citation>
</ref>
<ref id="B17">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Liu]]></surname>
<given-names><![CDATA[T.]]></given-names>
</name>
<name>
<surname><![CDATA[He]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<name>
<surname><![CDATA[An]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Kang]]></surname>
<given-names><![CDATA[X.]]></given-names>
</name>
<name>
<surname><![CDATA[Huang]]></surname>
<given-names><![CDATA[Z.]]></given-names>
</name>
<name>
<surname><![CDATA[Li]]></surname>
<given-names><![CDATA[W.]]></given-names>
</name>
<name>
<surname><![CDATA[Zhang]]></surname>
<given-names><![CDATA[Y.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Experimental study on the treatment of chromium containing wastewater by electric flocculation. IOP Conference Series]]></article-title>
<source><![CDATA[Earth and Environmental Science]]></source>
<year>2018</year>
<volume>170</volume>
<numero>5</numero>
<issue>5</issue>
</nlm-citation>
</ref>
<ref id="B18">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Mahmad]]></surname>
<given-names><![CDATA[M. K. N.]]></given-names>
</name>
<name>
<surname><![CDATA[Rozainy]]></surname>
<given-names><![CDATA[M. A. Z. M. R.]]></given-names>
</name>
<name>
<surname><![CDATA[Abustan]]></surname>
<given-names><![CDATA[I.]]></given-names>
</name>
<name>
<surname><![CDATA[Baharun]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Electrocoagulation Process by Using Aluminium and Stainless Steel Electrodes to Treat Total Chromium, Colour and Turbidity.]]></article-title>
<source><![CDATA[Procedia Chemistry]]></source>
<year>2016</year>
<numero>19</numero>
<issue>19</issue>
<page-range>681-6</page-range></nlm-citation>
</ref>
<ref id="B19">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Mamelkina]]></surname>
<given-names><![CDATA[M. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Vasilyev]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<name>
<surname><![CDATA[Tuunila]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Sillanpää]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Häkkinen]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Investigation of the parameters affecting the treatment of mining waters by electrocoagulation]]></article-title>
<source><![CDATA[Journal of Water Process Engineering]]></source>
<year>2019</year>
<numero>32</numero>
<issue>32</issue>
<page-range>100929</page-range></nlm-citation>
</ref>
<ref id="B20">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Martín-Domínguez]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Rivera-Huerta]]></surname>
<given-names><![CDATA[M. L.]]></given-names>
</name>
<name>
<surname><![CDATA[Pérez-Castrejón]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Garrido-Hoyos]]></surname>
<given-names><![CDATA[S. E.]]></given-names>
</name>
<name>
<surname><![CDATA[Villegas-Mendoza]]></surname>
<given-names><![CDATA[I. E.]]></given-names>
</name>
<name>
<surname><![CDATA[Gelover-Santiago]]></surname>
<given-names><![CDATA[S. L.]]></given-names>
</name>
<name>
<surname><![CDATA[Drogui]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Buelna]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Chromium removal from drinking water by redox-assisted coagulation: Chemical versus electrocoagulation]]></article-title>
<source><![CDATA[Separation and Purification Technology]]></source>
<year>2018</year>
<numero>200</numero>
<issue>200</issue>
<page-range>266-72</page-range></nlm-citation>
</ref>
<ref id="B21">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Naghdali]]></surname>
<given-names><![CDATA[Z.]]></given-names>
</name>
<name>
<surname><![CDATA[Sahebi]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Ghanbari]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Mousazadeh]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Jamali]]></surname>
<given-names><![CDATA[H. A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Chromium removal and water recycling from electroplating wastewater through direct osmosis: Modeling and optimization by response surface methodology.]]></article-title>
<source><![CDATA[Environmental Health Engineering and Management]]></source>
<year>2019</year>
<volume>6</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>113-20</page-range></nlm-citation>
</ref>
<ref id="B22">
<nlm-citation citation-type="confpro">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Nwabanne]]></surname>
<given-names><![CDATA[J. T.]]></given-names>
</name>
<name>
<surname><![CDATA[Igwegbe]]></surname>
<given-names><![CDATA[C. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Okpo]]></surname>
<given-names><![CDATA[S. O.]]></given-names>
</name>
</person-group>
<source><![CDATA[Removal of Copper, Nickel, and Chromium from Simulated Wastewater using Electrocoagulation Technique]]></source>
<year>2018</year>
<conf-name><![CDATA[ International Conference Proceedings]]></conf-name>
<conf-date>2018</conf-date>
<conf-loc> </conf-loc>
<page-range>448-58</page-range></nlm-citation>
</ref>
<ref id="B23">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Pavithra]]></surname>
<given-names><![CDATA[K. G.]]></given-names>
</name>
<name>
<surname><![CDATA[Jaikumar]]></surname>
<given-names><![CDATA[V.]]></given-names>
</name>
<name>
<surname><![CDATA[Kumar]]></surname>
<given-names><![CDATA[P. S.]]></given-names>
</name>
<name>
<surname><![CDATA[Sundarrajan]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Cleaner strategies on the effective elimination of toxic chromium from wastewater using coupled electrochemical/biological systems]]></article-title>
<source><![CDATA[Environmental Progress and Sustainable Energy]]></source>
<year>2020</year>
<volume>39</volume>
<numero>4</numero>
<issue>4</issue>
</nlm-citation>
</ref>
<ref id="B24">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Peng]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
<name>
<surname><![CDATA[Guo]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Removal of chromium from wastewater by membrane filtration, chemical precipitation, ion exchange, adsorption electrocoagulation, electrochemical reduction, electrodialysis, electrodeionization, photocatalysis and nanotechnology: a review]]></article-title>
<source><![CDATA[Environmental Chemistry Letters]]></source>
<year>2020</year>
<numero>18</numero>
<issue>18</issue>
<page-range>2088-68</page-range></nlm-citation>
</ref>
<ref id="B25">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Peng]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
<name>
<surname><![CDATA[Leng]]></surname>
<given-names><![CDATA[Y.]]></given-names>
</name>
<name>
<surname><![CDATA[Guo]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Electrochemical removal of chromium (VI) from wastewater.]]></article-title>
<source><![CDATA[Applied Sciences]]></source>
<year>2019</year>
<volume>9</volume>
<numero>6</numero>
<issue>6</issue>
<page-range>1156</page-range></nlm-citation>
</ref>
<ref id="B26">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Petrie]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
<name>
<surname><![CDATA[Barden]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Kasprzyk-Hordern]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A review on emerging contaminants in wastewaters and the environment: Current knowledge, understudied areas and recommendations for future monitoring.]]></article-title>
<source><![CDATA[Water Research]]></source>
<year>2015</year>
<numero>72</numero>
<issue>72</issue>
<page-range>3-27</page-range></nlm-citation>
</ref>
<ref id="B27">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Prasetyaningrum]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Jos]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
<name>
<surname><![CDATA[Dharmawan]]></surname>
<given-names><![CDATA[Y.]]></given-names>
</name>
<name>
<surname><![CDATA[Prabowo]]></surname>
<given-names><![CDATA[B. T.]]></given-names>
</name>
<name>
<surname><![CDATA[Fathurrazan]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Fyrouzabadi]]></surname>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The influence of electrode type on electrocoagulation process for removal of chromium (VI) metal in plating industrial wastewater]]></article-title>
<source><![CDATA[Journal of Physics: Conference Series]]></source>
<year>2018</year>
<numero>1025</numero>
<issue>1025</issue>
</nlm-citation>
</ref>
<ref id="B28">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Sadeghi]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Alavi Moghaddam]]></surname>
<given-names><![CDATA[M. R.]]></given-names>
</name>
<name>
<surname><![CDATA[Arami]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Techno-economical evaluation of hexavalent chromium removal by electrocoagulation process with the aid of polyaluminum chloride as coagulant: Optimization through response surface methodology]]></article-title>
<source><![CDATA[Environmental Engineering and Management Journal]]></source>
<year>2017</year>
<volume>16</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>93-104</page-range></nlm-citation>
</ref>
<ref id="B29">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Singh]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
<name>
<surname><![CDATA[Sonal]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Mishra]]></surname>
<given-names><![CDATA[B. K.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Hexavalent chromium removal by monopolar electrodes based electrocoagulation system: Optimization through Box-Behnken design.]]></article-title>
<source><![CDATA[Journal of Water Supply: Research and Technology - AQUA]]></source>
<year>2018</year>
<volume>67</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>147-61</page-range></nlm-citation>
</ref>
<ref id="B30">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Tejada-Tovar]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Villabona-Ortíz]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Ortega-Toro]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Determination of Kinetic Parameters in the Biosorption of Chromium (VI) in Aqueous Solution]]></article-title>
<source><![CDATA[Ingeniería y Ciencia]]></source>
<year>2020</year>
<volume>16</volume>
<numero>31</numero>
<issue>31</issue>
<page-range>129-43</page-range></nlm-citation>
</ref>
<ref id="B31">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Thirugnanasambandham]]></surname>
<given-names><![CDATA[K.]]></given-names>
</name>
<name>
<surname><![CDATA[Shine]]></surname>
<given-names><![CDATA[K.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Investigation on the Removal of Chromium from Wastewater using Electrocoagulation]]></article-title>
<source><![CDATA[International Journal of Chemical Reactor Engineering]]></source>
<year>2018</year>
<volume>16</volume>
<numero>5</numero>
<issue>5</issue>
<page-range>1-10</page-range></nlm-citation>
</ref>
<ref id="B32">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ziati]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Khemmari]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<name>
<surname><![CDATA[Aitbara]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Hazourli]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Reduction of Turbidity and Chromium Content of Tannery Wastewater by Electrocoagulation Process]]></article-title>
<source><![CDATA[Water Environment Research]]></source>
<year>2018</year>
<volume>90</volume>
<numero>7</numero>
<issue>7</issue>
<page-range>598-603</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
