<?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>2594-1925</journal-id>
<journal-title><![CDATA[Revista de ciencias tecnológicas]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. cienc. tecnol.]]></abbrev-journal-title>
<issn>2594-1925</issn>
<publisher>
<publisher-name><![CDATA[Universidad Autónoma de Baja California]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2594-19252024000400102</article-id>
<article-id pub-id-type="doi">10.37636/recit.v7n4e304</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Generación electroquímica de hidrógeno utilizando agua industrial amoniacal y electrodos de grafito reciclado]]></article-title>
<article-title xml:lang="en"><![CDATA[Electrochemical generation of hydrogen using industrial ammonia water and recycled graphite electrodes]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Puente Siller]]></surname>
<given-names><![CDATA[Damaris Margarita]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González de la Cruz]]></surname>
<given-names><![CDATA[José Manuel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Acuña Gutierrez]]></surname>
<given-names><![CDATA[Ivan Omar]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vega Valdés]]></surname>
<given-names><![CDATA[José de Jesús]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[López Corpus]]></surname>
<given-names><![CDATA[Juan Antonio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Perea Garduño]]></surname>
<given-names><![CDATA[Alberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Altos Hornos de México S. A. B. de C. V.  ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma de Coahuila  ]]></institution>
<addr-line><![CDATA[Saltillo Coahuila]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2024</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2024</year>
</pub-date>
<volume>7</volume>
<numero>4</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2594-19252024000400102&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2594-19252024000400102&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2594-19252024000400102&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen. La búsqueda de combustibles que no emitan gases de efecto invernadero, hace que el uso de hidrógeno en la industria siderúrgica sea cada vez más necesario, por lo que, esta investigación representa un compromiso ecológico, donde, tanto investigadores como la empresa buscan la generación de hidrógeno para su utilización en el proceso productivo del acero. Para su desarrollo, se utilizó una celda de acrílico, solución amoniacal y una fuente de poder. El proceso experimental consta de tres partes, primero, la evaluación de la generación de hidrógeno variando el potencial aplicado y el tiempo de electrólisis; segundo, la sustitución del agua amoniacal por una solución de amoniaco sintética, a fin de explicar el comportamiento del sistema y minimizar el efecto de los componentes de la solución ajenos al amoniaco; y tercero, el cambio de los electrodos de grafito por electrodos de acero, con el objetivo de evaluar su efecto en el proceso electrolítico. La cuantificación del hidrógeno fue de manera indirecta, utilizando un tubo de Venturi mediante el cual, se succionaron y depositaron los gases generados y en una solución de sulfato cúprico (generando precipitados) para determinar estequiométricamente la masa de hidrógeno producida. Los resultados de la evaluación del tiempo, densidad de corriente y concentración de las soluciones, definieron un tiempo experimental de 30 minutos, una densidad de corriente de 100 A/m2 y que la concentración inicial de amoniaco en las soluciones, puede influir en los resultados obtenidos, los mejores resultados corresponden a la generación de 1.130 g H2 en una solución con 2.6 g/l NH3. En conclusión, fue posible determinar las mejores condiciones de procesamiento; que la concentración inicial de amoniaco tiene un efecto en la generación electroquímica de hidrógeno; que en todas las soluciones se tuvo una disminución en la concentración inicial de amoniaco y que mediante la determinación indirecta del hidrógeno fue posible desarrollar los cálculos de masa generada del gas.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract. The pursuit of fuels that do not emit greenhouse gases has made the use of hydrogen in the steel industry increasingly necessary. This study represents an ecological commitment, wherein both researchers and the company aim to generate hydrogen for use in the steel production process. An acrylic cell, ammoniacal solution, and power source were used in the experimental setup, which consists of three parts: first, the evaluation of hydrogen generation by varying the applied voltage and electrolysis duration; second, the replacement of ammoniacal water with a synthetic ammonia solution to understand system behaviour and minimize the effects of solution components unrelated to ammonia; and third, the substitution of graphite electrodes with steel electrodes to assess their impact on the electrolytic process. Hydrogen quantification was carried out indirectly using a Venturi tube, which captured the generated gases, and through a copper sulphate solution (producing precipitates) to stoichiometrically determine the mass of produced hydrogen. The results of evaluating time, current density, and solution concentration defined an optimal electrolysis time of 30 minutes, a current density of 100 A/m², and indicated that the initial ammonia concentration in the solutions influences the results. The best results corresponded to 1.130 g of H&#8322; in a solution with an initial concentration of 2.6 g/l NH&#8323;. In conclusion, this study determined optimal processing conditions, established the effect of initial ammonia concentration on the electrochemical generation of hydrogen, observed a decrease in ammonia concentration across all solutions, and successfully calculated the generated gas mass through indirect hydrogen quantification.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Electrólisis]]></kwd>
<kwd lng="es"><![CDATA[Hidrógeno]]></kwd>
<kwd lng="es"><![CDATA[Soluciones de amoniaco]]></kwd>
<kwd lng="en"><![CDATA[Electrolysis]]></kwd>
<kwd lng="en"><![CDATA[Hydrogen]]></kwd>
<kwd lng="en"><![CDATA[Ammonia solutions]]></kwd>
</kwd-group>
</article-meta>
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