<?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>2223-4861</journal-id>
<journal-title><![CDATA[Centro Azúcar]]></journal-title>
<abbrev-journal-title><![CDATA[cen. az.]]></abbrev-journal-title>
<issn>2223-4861</issn>
<publisher>
<publisher-name><![CDATA[Editorial Feijóo]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2223-48612022000400091</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[DEFINICIÓN DE LA LEY DE VELOCIDAD PARA LA REACCIÓN ENTRE LAS AGUAS RESIDUALES TEXTILES Y DIÓXIDO DE CARBONO]]></article-title>
<article-title xml:lang="en"><![CDATA[DEFINITION OF THE RATE LAW FOR THE REACTION BETWEEN TEXTILE WASTEWATER AND CARBON DIOXIDE]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Arbona Cabrera]]></surname>
<given-names><![CDATA[Mercedes]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cabrera Estrada]]></surname>
<given-names><![CDATA[Isabel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Fabelo Falcón]]></surname>
<given-names><![CDATA[José Antonio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[O' Farrill Pie]]></surname>
<given-names><![CDATA[María Eugenia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[García Hernández]]></surname>
<given-names><![CDATA[María de los Ángeles]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Central &#8220;Marta Abreu&#8221; de Las Villas Facultad de Química y Farmacia Departamento de Ingeniería Química]]></institution>
<addr-line><![CDATA[Santa Clara Villa Clara]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,UB &#8220;Desembarco del Granma&#8221;  ]]></institution>
<addr-line><![CDATA[Santa Clara Villa Clara]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2022</year>
</pub-date>
<volume>49</volume>
<numero>4</numero>
<fpage>91</fpage>
<lpage>101</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S2223-48612022000400091&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S2223-48612022000400091&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S2223-48612022000400091&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Introducción: Las aguas residuales alcalinas son un subproducto de muchas industrias textiles. Se requiere un ajuste del pH mediante la adición de productos ácidos. Al determinar la cinética de la reacción de neutralización entre esas aguas y el CO2 el sistema de tratamiento concebido será más eficiente.  Objetivo: Definir la ley de velocidad para la reacción entre las aguas residuales textiles y el dióxido de carbono en la UB &#8220;Desembarco del Granma&#8221;.  Materiales y Métodos: Se empleó agua residual del proceso textil y CO2. Se realizaron experimentos en un reactor discontinuo. Se utilizó el método integral de análisis de datos cinéticos y pruebas de hipótesis no paramétricas.  Resultados y Discusión: El pH básico del efluente a la planta se debe al uso de NaOH en los procesos textiles. Dos pruebas de hipótesis no paramétricas para los valores de las constantes de velocidad específica de la reacción (k) reflejaron desviaciones estándares de 0,171 y 0,76 respectivamente, superiores a 0,05, por lo que no existen diferencias significativas entre los cuatro grupos considerados para cada temperatura. Con la prueba de hipótesis no paramétrica para k a 50 y 30 °C, el nivel de significación (0,001) corroboró la dependencia de cada k con la temperatura.  Conclusiones: Las constantes de velocidad específica para las temperaturas de 30°C y 50°C determinadas son 57,98 y 105,94 L/(mol s) respectivamente para la reacción de neutralización del agua residual textil con CO2. La reacción es de orden 2, presenta un valor de energía de activación de 24,5 kJ/mol.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Introduction: Alkaline wastewater is a by-product of many textile industries. A pH adjustment is required by the addition of acidic products. By determining the kinetics of the neutralization reaction between these waters and CO2, the conceived treatment system will be more efficient.  Objective: Define the rate law for the reaction between textile wastewater and carbon dioxide in the UB &#8220;Desembarco del Granma&#8221;.  Materials and Methods: Residual water from the textile process and CO2 were used. Experiments were carried out in a batch reactor. The integral method of kinetic data analysis and non-parametric hypothesis tests were used.  Results and Discussion: The basic pH of the effluent to the mill is due to the use of NaOH in textile processes. Two non-parametric hypothesis tests for the values of the reaction-specific rate constants (k) reflected standard deviations of 0.171 and 0.76 respectively, higher than 0.05, so there are no significant differences between the four groups considered for each temperature. With the non-parametric hypothesis test for k at 50 and 30 °C, the level of significance (0.001) corroborated the dependence of each k with temperature.  Conclusions: The specific rate constants for the temperatures of 30°C and 50°C determined are 57.98 and 105.94 L/(mol s) respectively for the neutralization reaction of the textile wastewater with CO2. The reaction is of order 2 presents an activation energy value of 24.5 kJ/mol.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[aguas residuales]]></kwd>
<kwd lng="es"><![CDATA[dióxido de carbono]]></kwd>
<kwd lng="es"><![CDATA[ley de velocidad]]></kwd>
<kwd lng="en"><![CDATA[sewage water]]></kwd>
<kwd lng="en"><![CDATA[carbon dioxide]]></kwd>
<kwd lng="en"><![CDATA[speed law]]></kwd>
</kwd-group>
</article-meta>
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