<?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>2215-2652</journal-id>
<journal-title><![CDATA[Ingeniería]]></journal-title>
<abbrev-journal-title><![CDATA[Ingeniería]]></abbrev-journal-title>
<issn>2215-2652</issn>
<publisher>
<publisher-name><![CDATA[Universidad de Costa Rica]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2215-26522024000100023</article-id>
<article-id pub-id-type="doi">10.15517/ri.v34i1.55355</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Techno-economic analysis of biogas production from pinneaple leaves juice and chiken manure in anaerobic codigestion]]></article-title>
<article-title xml:lang=""><![CDATA[Análisis tecno-económico de la producción de biogás a partir de jugo de rastrojo de piña y gallinaza en codigestión anaerobia]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Da Luz Castro]]></surname>
<given-names><![CDATA[Juliana]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rojas Sossa]]></surname>
<given-names><![CDATA[Juan Pablo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Bustamante Román]]></surname>
<given-names><![CDATA[Mauricio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,University of Costa Rica  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Costa Rica</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,University of Costa Rica  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Costa Rica</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,University of Costa Rica  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Costa Rica</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2024</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2024</year>
</pub-date>
<volume>34</volume>
<numero>1</numero>
<fpage>23</fpage>
<lpage>32</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_arttext&amp;pid=S2215-26522024000100023&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_abstract&amp;pid=S2215-26522024000100023&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_pdf&amp;pid=S2215-26522024000100023&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Resumen La piña, Ananas comosus, es uno de los cultivos de mayor importancia en Costa Rica, produciendo un prominente 1,7 % del Producto Interno Bruto (PIB) nacional; sin embargo, metodologías actuales para tratar los residuos de las hojas de las plantas pueden causar potenciales problemas en la salud pública debido a proliferación de moscas, además de contaminación ambiental y aporte a los gases de efecto invernadero. El objetivo del presente estudio fue la utilización del jugo de las hojas de la planta de piña para evaluar la producción de biogás en combinación con gallinaza como sustratos. Se realizaron pruebas de potencial de biometano con distintas concentraciones de jugo y gallinaza (70/30, 80/20 y 90/10), así como pruebas con cada sustrato de manera independiente. Los resultados muestran que mayores cantidades de biogás se produjeron en los sistemas con proporciones de 80/20 y 70/30. Adicionalmente, se realizó una estimación de la inversión requerida, con el fin de realizar un estudio tecno-económico mediante la metodología de Peters y Timmerhaus. Del análisis tecno-económico, se concluye que el proceso es altamente rentable, con un período de retorno de inversión de 2,3 años.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Pineapple, Ananas comosus, is one of the most important crops in Costa Rica, producing a prominent 1,7 % of the national Gross Domestic Product (GDP); however, current methodologies to treat pineapple leaves can cause potential public health problems due to proliferation of flies, as well as environmental pollution and greenhouse gases emissions. The objective of this work was to use pineapple leaves juice to evaluate the production of biogas in combination with chicken manure as substrates. Biochemical methane potential assays were carried out using different proportions of juice and chicken manure (70/30, 80/20 and 90/10), as well as individual assays for each substrate. Results show that higher amounts of biogas were produced in the systems with 70/30 and 80/20 proportions. In addition, a capital investment estimation was carried out to evaluate the techno-economic feasibility with the Peters and Timmerhaus methodology. The techno-economic analysis gives a payback time of 2,3 years which makes the project highly profitable.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Biogás]]></kwd>
<kwd lng="es"><![CDATA[codigestión anaerobia]]></kwd>
<kwd lng="es"><![CDATA[gallinaza]]></kwd>
<kwd lng="es"><![CDATA[prefactibilidad tecno-económica]]></kwd>
<kwd lng="es"><![CDATA[rastrojo de piña]]></kwd>
<kwd lng="en"><![CDATA[Anaerobic codigestion]]></kwd>
<kwd lng="en"><![CDATA[biogas]]></kwd>
<kwd lng="en"><![CDATA[chicken manure]]></kwd>
<kwd lng="en"><![CDATA[pineapple leaves]]></kwd>
<kwd lng="en"><![CDATA[techno-economic feasibility]]></kwd>
</kwd-group>
</article-meta>
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