<?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>1659-1321</journal-id>
<journal-title><![CDATA[Agronomía Mesoamericana]]></journal-title>
<abbrev-journal-title><![CDATA[Agron. Mesoam]]></abbrev-journal-title>
<issn>1659-1321</issn>
<publisher>
<publisher-name><![CDATA[Universidad de Costa Rica]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1659-13212022000100011</article-id>
<article-id pub-id-type="doi">10.15517/am.v33i1.44288</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Quitosano aplicado en el tratamiento del agua residual de la producción de aceite de palma]]></article-title>
<article-title xml:lang="en"><![CDATA[Chitosan applied in the treatment of wastewater from palm oil production]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rodríguez-Jiménez]]></surname>
<given-names><![CDATA[Dalia Milena]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rodríguez-Díaz]]></surname>
<given-names><![CDATA[Yim James]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Burbano-Erazo]]></surname>
<given-names><![CDATA[Esteban]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Popular del Cesar  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Popular del Cesar  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Corporación Colombiana de Investigación Agropecuaria (AGROSAVIA)  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>04</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>04</month>
<year>2022</year>
</pub-date>
<volume>33</volume>
<numero>1</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_arttext&amp;pid=S1659-13212022000100011&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_abstract&amp;pid=S1659-13212022000100011&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_pdf&amp;pid=S1659-13212022000100011&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Introducción. El uso de biopolímeros en el tratamiento de efluentes permite controlar el impacto ambiental asociado a la descarga de aguas residuales agroindustriales. Objetivo. Evaluar la efectividad del quitosano como coagulante natural en el tratamiento de efluentes de producción de aceite de palma. Materiales y métodos. Se determinaron los parámetros: demanda química de oxígeno (DQO), los sólidos suspendidos totales (SST) y volátiles (SSV), turbidez y grasas y aceites (GYA) sobre en el agua residual asociada a la producción de aceite de palma proveniente del municipio de Agustín Codazzi en el departamento del Cesar (Colombia), por el ensayo de pruebas de jarras. Se aplicó quitosano en dosis de: 100, 200, 300, 400 y 0 mg L-1 a tres niveles de pH 4, 5 y 6 del agua. Se implementó un diseño experimental completamente aleatorizado, de dos vías, con efectos fijos. Para el análisis de datos se utilizó un análisis multivariado de los parámetros fisicoquímicos del efluente industrial. El estudio se realizó en el año 2012. Resultados. El quitosano permitió reducir más del 87 % de turbidez, DQO, SST, SSV y grasas y aceites en todas las dosis del coagulante, mientras que el control (0 mg L-1) fue diferente estadísticamente (p&lt;0,05) a todos los tratamientos. En el análisis multivariado de los datos, el componente principal 1 (PC1) explicó el 79,3 % de la varianza total de las variables. Conclusión. Dosis de 100, 200, 300 y 400 mg L-1 de quitosano evaluado como coagulante natural en el tratamiento de aguas, disminuyeron la concentración de contaminantes en efluentes asociados a la producción de aceite de palma.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Introduction. The use of biopolymers in effluents treatment allows to control the environmental impact associated with agroindustrial wastewater discharge. Objective. To evaluate the effectiveness of chitosan as a natural coagulant in the treatment of palm oil production effluents. Materials and methods. The following parameters were determined: Chemical Oxygen Demand (COD), total suspended solids (TSS) and volatile solids (TVS), turbidity and fats and oils (GYA) in wastewater associated with palm oil production from the municipality of Agustín Codazzi in the department of Cesar (Colombia), by the jar test assay. Chitosan was applied in doses of: 100, 200, 300, 400, and 0 mg L-1 at three pH levels 4, 5, and 6 of the water. A completely randomized, two-way, fixed effects experimental was implemented. A multivariate analysis of the physical-chemical parameters of industrial effluent was used for data analysis. The study was conducted in 2012. Results. Chitosan allowed a reduction of more than 87 % turbidity, COD, TSS, TVS and fats and oils in all coagulant doses. While the control (0 mg L-1) was statistically different (p&lt;0.05) to all the treatments. In the multivariate analysis of the data, the principal component 1 (PC1) explained 79.3 % of the total variance of the variables. Conclusion. Doses of 100, 200, 300, and 400 mg L-1 of chitosan evaluated as a natural coagulant in water treatment, decreased the concentration of pollutants in effluents associated with palm oil production.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[aguas residuales]]></kwd>
<kwd lng="es"><![CDATA[análisis multivariado]]></kwd>
<kwd lng="es"><![CDATA[biopolímero]]></kwd>
<kwd lng="es"><![CDATA[tratamiento de efluentes]]></kwd>
<kwd lng="es"><![CDATA[prueba de jarras]]></kwd>
<kwd lng="en"><![CDATA[wastewater]]></kwd>
<kwd lng="en"><![CDATA[multivariate analysis]]></kwd>
<kwd lng="en"><![CDATA[biopolymer]]></kwd>
<kwd lng="en"><![CDATA[treatment of effluents]]></kwd>
<kwd lng="en"><![CDATA[jar test]]></kwd>
</kwd-group>
</article-meta>
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