<?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>S2224-61852021000300595</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Evaluación técnica, económica y ambiental de una propuesta para la gestión de los residuos sólidos urbanos en Manta, Ecuador]]></article-title>
<article-title xml:lang="en"><![CDATA[Technical, economic and environmental evaluation of a proposal for the management of urban solid waste in Manta, Ecuador]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Muñoz- Menéndez]]></surname>
<given-names><![CDATA[María B.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Contreras-Moya]]></surname>
<given-names><![CDATA[Ana Margarita]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Santos- errero]]></surname>
<given-names><![CDATA[Ronaldo Francisco]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rosa-Domínguez]]></surname>
<given-names><![CDATA[Elena R.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cárdenas Ferrer]]></surname>
<given-names><![CDATA[Teresa]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Laica Eloy Alfaro de Manabí  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Ecuador</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Central Marta Abreu de Las Villas  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2021</year>
</pub-date>
<volume>41</volume>
<numero>3</numero>
<fpage>595</fpage>
<lpage>618</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S2224-61852021000300595&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S2224-61852021000300595&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S2224-61852021000300595&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN La gestión de residuos sólidos es fundamental para la sostenibilidad del planeta, por lo que hacía ello debe ser la tendencia de las investigaciones. La digestión anaeróbica de la fracción orgánica constituye un proceso atractivo, cuyos resultados muestran las ventajas de la separación de fases, que permite optimizar la acidogénesis y metanogénesis por separado y proporciona productos de alto valor agregado como hidrógeno y otros. El objetivo de este trabajo fue evaluar técnica, económica y ambientalmente una alternativa para la gestión de los residuos sólidos urbanos en Manta, Ecuador a partir de un modelo que incluye procesos de reciclaje de la fracción inorgánica de los residuos, digestión anaeróbica en fases separadas de la fracción orgánica y disposición final en relleno sanitario. Los resultados experimentales globales muestran una remoción promedio de sólidos totales (ST) de 58,24 % con valor máximo de 71,31 %; una remoción promedio de 64,83 % de sólidos totales volátiles (STV) con valor máximo de 78,78 %, rendimientos promedio de la producción de hidrógeno de 35 LH2/kg STV alim y producción de metano de 426 LCH4/kg STV alim. La evaluación mediante Análisis de Ciclo de Vida evidencia las ventajas de la alternativa propuesta con relación a la situación actual de la gestión de los RSU de Manta, con valores de puntuación única de -7,46 kPt y 15,55 kPt, respectivamente. El análisis económico refleja la factibilidad de la inversión requerida, con un VAN de $ 6 100 987,57 y una TIR de 66 %, que puede ser recuperada en un período de aproximadamente dos años.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT Solid waste management is essential for the sustainability of the planet, for that, toward it should be the tendency of the researches. The anaerobic digestion of the organic fraction constitutes an attractive process, the results of which show the advantages of phase separation, which allows to optimize acidogenesis and methanogenesis separately and provides high added value products such as hydrogen and others. The objective of this work was to evaluate technically, economically and environmentally an alternative for the management of urban solid waste in Manta, Ecuador from a model that includes recycling processes of the inorganic fraction of the waste, anaerobic digestion in separate phases of the organic fraction and final disposal in a sanitary landfill. The global experimental results show an average removal of total solids (TS) of 58, 24 % with a maximum value of 71,31 %; an average removal of 64,83 % of total volatile solids (STV) with a maximum value of 78,78 %, average yields of hydrogen production of 35 LH2/kg STV feed and methane production of 426 LCH4/kg STV feed. The evaluation by Life Cycle Analysis shows the advantages of the proposed alternative in relation to the current situation of the management of MSW in Manta, with single score values of -7,46 kPt and 15,55 kPt, respectively. The economic analysis reflects the feasibility of the required investment, with a NPV of $ 6 100 987,57 and an TIR of 66 %, which can be recovered in a period of approximately two years.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[residuos sólidos urbanos]]></kwd>
<kwd lng="es"><![CDATA[digestión anaeróbica]]></kwd>
<kwd lng="es"><![CDATA[fases separadas]]></kwd>
<kwd lng="es"><![CDATA[análisis de ciclo de vida, evaluación técnico- económica]]></kwd>
<kwd lng="en"><![CDATA[urban solid wastes]]></kwd>
<kwd lng="en"><![CDATA[anaerobic digestion]]></kwd>
<kwd lng="en"><![CDATA[separate phases]]></kwd>
<kwd lng="en"><![CDATA[life cycle analysis]]></kwd>
<kwd lng="en"><![CDATA[technical- economic evaluation]]></kwd>
</kwd-group>
</article-meta>
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