<?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>1665-6423</journal-id>
<journal-title><![CDATA[Journal of applied research and technology]]></journal-title>
<abbrev-journal-title><![CDATA[J. appl. res. technol]]></abbrev-journal-title>
<issn>1665-6423</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional Autónoma de México, Instituto de Ciencias Aplicadas y Tecnología]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1665-64232025000100022</article-id>
<article-id pub-id-type="doi">10.22201/icat.24486736e.2025.23.1.2483</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Adsorption of Congo red textile dye on pineapple activated charcoal]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Santos]]></surname>
<given-names><![CDATA[M. L. G.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Paz]]></surname>
<given-names><![CDATA[E. C. S.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Silva]]></surname>
<given-names><![CDATA[E. M.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pedroza]]></surname>
<given-names><![CDATA[M. M.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Oliveira]]></surname>
<given-names><![CDATA[L. R. A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Federal Institute of Tocantins Department of Environmental Engineering ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Brazil</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,University of Ribeirão Preto Department of Environmental Technology ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Brazil</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2025</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2025</year>
</pub-date>
<volume>23</volume>
<numero>1</numero>
<fpage>22</fpage>
<lpage>32</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1665-64232025000100022&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1665-64232025000100022&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1665-64232025000100022&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The work produced activated carbon (CACCA) from the lignocellulosic biomass of pineapple peel and crown (CCA) by slow pyrolysis in a fixed bed reactor. Activation was carried out by water vapor at a temperature of 700 °C for a period of 30 min. The objective was to remove the Congo red textile dye from the charcoal obtained. The biomass showed values for density 0.264 g/ mL, moisture 7.03%, volatile matter 80.74%, ash 6.33%, fixed carbon 5.9%, carbon 43.43%, hydrogen 1.16%, oxygen 48.19%, nitrogen 6.22%. The CACCA yield was 25.24%. CACCA was used in the adsorption process to remove the anionic Congo red dye, using a Plackett-Burman (PB) experimental design. The formation of a mesoporous structure of the activated charcoal and pHpcz of the CACCA favored the adsorption process, which reached up to 94.94% efficiency in the dye removal.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Pineapple]]></kwd>
<kwd lng="en"><![CDATA[pyrolysis]]></kwd>
<kwd lng="en"><![CDATA[charcoal]]></kwd>
<kwd lng="en"><![CDATA[adsorption]]></kwd>
<kwd lng="en"><![CDATA[Plackett-Burman]]></kwd>
</kwd-group>
</article-meta>
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