<?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>S2224-61852021000200440</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Modelo dinámico para cultivo mixotrófico (microalgas-bacterias) en un fotobiorreactor de capa fina a gran escala]]></article-title>
<article-title xml:lang="en"><![CDATA[Dynamic model for the large-scale mixotrophic culture of microalgae and bacteria in a thin layer photo bioreactor]]></article-title>
</title-group>
<contrib-group>
<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[Juantorena Ugás]]></surname>
<given-names><![CDATA[Alina]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Proenza Yero]]></surname>
<given-names><![CDATA[Roger]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Centro de Investigaciones de Energía Solar  ]]></institution>
<addr-line><![CDATA[Santiago de Cuba ]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma del Estado de Morelos  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2021</year>
</pub-date>
<volume>41</volume>
<numero>2</numero>
<fpage>440</fpage>
<lpage>462</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S2224-61852021000200440&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S2224-61852021000200440&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S2224-61852021000200440&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN &#8226; El cultivo de microalgas tiene intereses importantes desde el punto de vista económico con la producción de medicamentos, antisépticos, suplementos proteico-vitamínicos y biocombustibles como hidrogeno, etanol y biodiesel, así como para bio-remediación del medio ambiente contribuyendo a la mitigación del CO2 en la atmósfera y al tratamiento de aguas residuales. En este trabajo se presenta un modelo dinámico que describe el crecimiento simbiótico de la microalga Chlorella vulgaris y bacterias, en un fotobiorreactor de capa fina a cielo abierto de 3500 m2 de área, utilizado para el tratamiento de residuales líquidos porcinos. Se desarrolla un procedimiento novedoso para estimar el valor del pH y se propone una nueva ecuación cinética de crecimiento de las microalgas. Se empleó MATLAB sofware R2009b para desarrollar un programa que permite estimar la temperatura de la suspensión de cultivo y la variación de los parámetros de proceso (concentración de algas y bacterias, concentración de materia orgánica en términos de demanda bioquímica de oxígeno, pH, concentración de oxígeno disuelto, concentración dióxido de carbono disuelto, concentración de nitrógeno amoniacal disuelto y orto-fosfatos disueltos). Se demuestra la correlación existente entre los parámetros experimentales de proceso y los obtenidos con el programa, con un error inferior a un 10% en todos los casos. La productividad por unidad de área de cultivo obtenida con el programa, es compara con los datos reales obtenidos y el error máximo es de ± 4%.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT &#8226; The cultivation of microalgae has important interests from the economic point of view with the production of medicines, antiseptics, protein-vitamin supplements and biofuels such as hydrogen, ethanol and biodiesel, as well as for bio remediation of the environment contributing to the mitigation of CO2 in the atmosphere and wastewater treatment. In this work, a dynamic model is presented that describes the symbiotic growth of the microalgae Chlorella vulgaris and bacteria, in an open-air thin-film photobioreactor of 3,500 m2, used for the treatment of liquid pig waste. A novel procedure is developed to estimate the pH value and a new kinetic equation for the growth of microalgae is proposed. MATLAB software R2009b was used to develop a program that allows estimating the temperature of the culture suspension and the variation of the process parameters (concentration of algae and bacteria, concentration of organic matter in terms of biochemical oxygen demand, pH, concentration of dissolved oxygen, dissolved carbon dioxide concentration, dissolved ammonia nitrogen concentration, and dissolved ortho-phosphates). The correlation between the experimental process parameters and those obtained with the program is demonstrated, with an error of less than 10% in all cases. The productivity per unit of cultivation area obtained with the program is compared with the real data obtained and the maximum error is ± 4%.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Chlorella vulgaris]]></kwd>
<kwd lng="es"><![CDATA[residuales líquidos porcinos]]></kwd>
<kwd lng="es"><![CDATA[fotobiorreactor de capa fina]]></kwd>
<kwd lng="es"><![CDATA[modelo dinámico]]></kwd>
<kwd lng="en"><![CDATA[Chlorella vulgaris]]></kwd>
<kwd lng="en"><![CDATA[porcine liquid waste]]></kwd>
<kwd lng="en"><![CDATA[thin layer photo-bioreactor]]></kwd>
<kwd lng="en"><![CDATA[dynamic model]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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