<?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>1405-7743</journal-id>
<journal-title><![CDATA[Ingeniería, investigación y tecnología]]></journal-title>
<abbrev-journal-title><![CDATA[Ing. invest. y tecnol.]]></abbrev-journal-title>
<issn>1405-7743</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional Autónoma de México, Facultad de Ingeniería]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1405-77432018000400007</article-id>
<article-id pub-id-type="doi">10.22201/fi.25940732e.2018.19n4.037</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Estudio de disoluciones acuosas poliméricas para la absorción de dióxido de carbono]]></article-title>
<article-title xml:lang="en"><![CDATA[Study of aqueous polymer solutions for carbon dioxide absorption]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Villavicencio-Márquez]]></surname>
<given-names><![CDATA[María De Los Ángeles]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[García-González]]></surname>
<given-names><![CDATA[Juan Manuel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Conejo-Flores]]></surname>
<given-names><![CDATA[Ricardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Almeida-Escalante]]></surname>
<given-names><![CDATA[Omayra]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma de Zacatecas Unidad Académica de Ciencias Químicas ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma de Zacatecas Unidad Académica de Ciencias Químicas ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Autónoma de Zacatecas Unidad Académica de Ciencias Químicas ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad Autónoma de Zacatecas Unidad Académica de Ciencias Químicas ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2018</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2018</year>
</pub-date>
<volume>19</volume>
<numero>4</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1405-77432018000400007&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1405-77432018000400007&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1405-77432018000400007&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El objetivo de la presente investigación es evaluar la absorción de CO2 en una solución acuosa de quitosano y líquidos iónicos. Para alcanzar el objetivo propuesto, se preparan soluciones acuosas de MEA a 30%, con quitosano a 0.5% y 3.0%, además se elaboran soluciones de quitosano con líquidos iónicos, como son; el bromuro de 1-hexil-3-metilimidazolio; líquido iónico eutéctico con y sin Li2O; y Bromuro de 1-etil-3-metilimidazolio. La experimentación se realiza en una celda de acero inoxidable donde se coloca el absorbente y una corriente directa de gas, ambas se mezclan a 300 rpm y temperatura de 30 °C hasta alcanzar el equilibrio. Además, para que la evaluación sea eficiente se modifica la presión (1 a 6 atm) y la concentración del quitosano en la solución, para determinar la capacidad de absorción del CO2. Al analizar los resultados se encuentra que de las soluciones preparadas la absorbe una mayor cantidad de CO2 es la de 0.5% de quitosano, sin embargo la velocidad de absorción es lenta. También se observa que la capacidad de absorción de las soluciones se incrementa con la presión. Por último, la propiedad con mayor efecto en la transferencia de masa es la viscosidad. Se puede concluir que la eficiencia en la capacidad de absorción aumenta conforme disminuye la cantidad de quitosano en las soluciones. Además que, las soluciones de quitosano a 3% y 0.5% muestran una mejor capacidad de absorción que los líquidos iónicos. La máxima capacidad de absorción que se obtuvo en líquidos iónicos fue para el caso del eutéctico a 30% y 3 atm. El valor de pKa del ácido del anión del líquido iónico, juega un papel importante en la capacidad de absorción de CO2, a mayor valor de pKa, mayor capacidad de captura.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The objective of the present investigation is to evaluate the absorption of CO2 in an aqueous solution of chitosan and ionic liquids. To achieve the proposed goal, aqueous solutions of 30% MEA are prepared, with 0.5% and 3.0% chitosan, and chitosan solutions are also prepared with ionic liquids, such as; 1-hexyl-3-methylimidazolium bromide; eutectic ionic liquid with and without Li2O; and 1-ethyl-3-methylimidazolium bromide. The experimentation is carried out in a stainless steel cell where the absorber and a direct gas stream are placed, both are mixed at 300 rpm and temperature of 30 °C until reaching equilibrium. In addition, for the evaluation to be efficient, the pressure (1 to 6 atm) and the concentration of the chitosan in the solution are modified to determine the CO2 absorption capacity. When analyzing the results, it is found that of the prepared solutions the absorbs a greater amount of CO2 is 0.5% of chitosan, however the speed of absorption is slow. It is also observed that the absorption capacity of the solutions increases with the pressure. Finally, the property with the greatest effect on mass transfer is viscosity. It can be concluded that the efficiency in the absorption capacity increases as the amount of chitosan in the solutions decreases. In addition, 3% and 0.5% chitosan solutions show a better absorption capacity than ionic liquids. The maximum absorption capacity that was obtained in ionic liquids was for the case of the eutectic at 30% and 3 atm. The pKa value of the anionic acid of the ionic liquid plays an important role in the CO2 absorption capacity, the higher the pKa value, the greater the capture capacity.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Dióxido de carbono]]></kwd>
<kwd lng="es"><![CDATA[quitosano]]></kwd>
<kwd lng="es"><![CDATA[líquidos iónicos]]></kwd>
<kwd lng="en"><![CDATA[Carbon dioxide]]></kwd>
<kwd lng="en"><![CDATA[chitosan]]></kwd>
<kwd lng="en"><![CDATA[ionic liquids]]></kwd>
</kwd-group>
</article-meta>
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