<?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>2224-6185</journal-id>
<journal-title><![CDATA[Tecnología Química]]></journal-title>
<abbrev-journal-title><![CDATA[RTQ]]></abbrev-journal-title>
<issn>2224-6185</issn>
<publisher>
<publisher-name><![CDATA[Universidad de Oriente]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2224-61852023000200222</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Modelación cinética del cultivo de Chlorella vulgaris en residuales porcinos: efecto de la irradiación solar]]></article-title>
<article-title xml:lang="en"><![CDATA[Kinetic modeling of Chlorella vulgaris cultivation in pig waste: effect of solar irradiation]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González-Muñoz]]></surname>
<given-names><![CDATA[Niela]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Alfaro-Vives]]></surname>
<given-names><![CDATA[Orlando Gines]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Crespo-Sariol]]></surname>
<given-names><![CDATA[Harold]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Casañ-González]]></surname>
<given-names><![CDATA[Luis Miguel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pérez-Silva]]></surname>
<given-names><![CDATA[Rosa María]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Oriente Centro de Biofísica Médica (CBM) ]]></institution>
<addr-line><![CDATA[Santiago de Cuba ]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Centro de Investigaciones de Energía Solar (CIES)  ]]></institution>
<addr-line><![CDATA[Santiago de Cuba ]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad de Oriente Facultad de Ciencias Naturales ]]></institution>
<addr-line><![CDATA[Santiago de Cuba ]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2023</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2023</year>
</pub-date>
<volume>43</volume>
<numero>2</numero>
<fpage>222</fpage>
<lpage>237</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S2224-61852023000200222&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S2224-61852023000200222&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S2224-61852023000200222&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN Existe un aumento exponencial de granjas porcinas en todo el mundo para satisfacer la creciente demanda de proteínas, lo que resulta en una cantidad significativa de aguas residuales porcinas. Dentro de los tratamientos biológicos, para dar situación a esta problemática, el cultivo de microalgas ha cobrado importancia en los últimos años, dado que su crecimiento requiere sustratos de bajo costo y puede ser efectivo para la obtención de compuestos de alto valor agregado. El objetivo de este trabajo es obtener un modelo cinético de un cultivo mixotrófico de Chlorella vulgaris en residuales porcinos a cielo abierto que considere el efecto de la irradiación solar. Como resultado de la investigación se obtiene un modelo cinético para describir el crecimiento simbiótico de la microalga y la bacteria Chlorella vulgaris en un sistema de cultivo a cielo abierto que utiliza residuos porcinos como única fuente de carbono y nutrientes. El modelo obtenido permite predecir las concentraciones máximas de la biomasa mixta considerando el efecto de la radiación solar acumulada en el día. El valor óptimo de irradiación solar es de 5209 W/m2h, al que se obtienen 11 gL-1 de biomasa. La validación del modelo mostró una correlación del 99,2 % entre las observaciones y las predicciones para condiciones variables de irradiación solar, indicando un buen desempeño en la práctica.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT There is an exponential increase in hog farms around the world to meet the increasing demand for protein, resulting in a significant amount of hog wastewater. Within the biological treatments, to address this problem, the cultivation of microalgae has gained importance in recent years, since its growth requires low-cost substrates and can be effective for obtaining compounds with high added value. The objective of this work is to obtain a kinetic model of a mixotrophic culture of Chlorella vulgaris in open-air pig waste that considers the effect of solar irradiation. As a result of the investigation, a kinetic model is obtained to describe the symbiotic growth of the microalgae and the Chlorella vulgaris bacterium in an open-air culture system that uses pig waste as the only source of carbon and nutrients. The model obtained makes it possible to predict the maximum concentrations of the mixed biomass considering the effect of accumulated solar radiation during the day. The optimum value of solar irradiation is 5209 W/m2h, at which 11 gl-1 of biomass are obtained. The validation of the model showed a 99,2% correlation between the observations and the predictions for variable solar irradiation conditions, indicating a good performance in practice.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[kinetic modeling]]></kwd>
<kwd lng="en"><![CDATA[biological treatment]]></kwd>
<kwd lng="en"><![CDATA[open culture system]]></kwd>
<kwd lng="es"><![CDATA[modelado cinético]]></kwd>
<kwd lng="es"><![CDATA[tratamiento biológico]]></kwd>
<kwd lng="es"><![CDATA[sistema de cultivo abierto]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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