<?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>0188-4999</journal-id>
<journal-title><![CDATA[Revista internacional de contaminación ambiental]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. Int. Contam. Ambient]]></abbrev-journal-title>
<issn>0188-4999</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional Autónoma de México, Instituto de Ciencias de la Atmósfera y Cambio Climático]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0188-49992024000100118</article-id>
<article-id pub-id-type="doi">10.20937/rica.54967</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Síntesis de carbones activados con semillas de chirimoya y su aplicación en la adsorción de colorantes textiles]]></article-title>
<article-title xml:lang="en"><![CDATA[Synthesis of activated carbons using custard apple seeds and their application in the adsorption of textile dyes]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Peláez Cid]]></surname>
<given-names><![CDATA[Alejandra Alicia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[López Hernández]]></surname>
<given-names><![CDATA[Diana Laura]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gómez Merino]]></surname>
<given-names><![CDATA[Esmeralda]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Herrera González]]></surname>
<given-names><![CDATA[Ana María]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Benemérita Universidad Autónoma de Puebla  ]]></institution>
<addr-line><![CDATA[Puebla Puebla]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma del Estado de Hidalgo  ]]></institution>
<addr-line><![CDATA[Mineral de la Reforma Hidalgo]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2024</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2024</year>
</pub-date>
<volume>40</volume>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0188-49992024000100118&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0188-49992024000100118&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0188-49992024000100118&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN En este trabajo se describe la preparación de cinco carbones activados a partir de un residuo vegetal, la semilla de chirimoya (Annona cherimola). Todos los carbones fueron activados químicamente con H3PO4, tres de ellos se calcinaron a 673 K (CarChiQ, CarChiQC y CarChiQE) y los otros dos a 873 K (CarChiQC600 y CarChiQE600) por tres horas. Los carbones fueron caracterizados por adsorción de nitrógeno, número de azul de metileno, densidad aparente, microscopía electrónica de barrido y espectroscopía infrarroja. Además, se determinó el punto de carga cero que indicó el carácter ácido de todos los carbones. Se siguió la cinética de adsorción con el colorante azul de metileno, lo que permitió establecer el tiempo de contacto entre las soluciones de colorante y los carbones. La cinética de adsorción para los carbones se ajustó al modelo de pseudo segundo orden. Se estudió la adsorción de soluciones acuosas de colorantes textiles de tipo ácido y básico con una concentración inicial de 300 mg/dm3. Los colorantes básicos se adsorbieron en CarChiQ entre 82 y 99.9 %, en CarChiQE entre 65 y 92 % y en CarChiQC, CarChiQC600 y CarChiQE600 prácticamente se adsorbieron 100 %. El colorante ácido se adsorbió en menor proporción sobre los carbones, con excepción de CarChiQC600 y CarChiQE600 con adsorción total. Se trató un agua residual conteniendo colorantes textiles, la calidad de ésta mejoró después del tratamiento de adsorción, reduciéndose la demanda química de oxígeno hasta 76 % y el color hasta 98 %.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT This work describes the preparation of five activated carbons from a vegetable waste: custard apple seeds (Annona cherimola). All carbons were chemically activated with phosphoric acid. Three of them were calcinated at 673 K (CarChiQ, CarChiQE, and CarChiQC) and the other two (CarChiQE600 and CarChiQC600) at 873 K for three hours. The carbons were characterized by nitrogen adsorption, methylene blue number, bulk density, scanning electron microscopy, and infrared spectroscopy. In addition, the point of zero charge indicated the acid character of the carbons. To establish the contact time between the solutions of dye and the carbons, the adsorption kinetics of methylene blue dye was followed. The adsorption kinetics for all the carbons fit the pseudo second order model. The adsorption of aqueous solutions containing anionic and cationic dyes with an initial concentration of 300 mg/dm3 was studied. It was found that, using CarChiQ, basic dyes were adsorbed in percentages ranging between 82 and 99.9 %; with CarChiQE, between 65 and 92 %; and using CarChiQC, CarChiQE600, and CarChiQC600, the adsorption almost reached 100 %. The acid dye was adsorbed in a smaller proportion, but in CarChiQE600 and CarChiQC600, its adsorption was total. A wastewater containing textile dyes was treated, and its quality was improved after the adsorption treatment. The chemical oxygen demand was reduced up to 76 % and its color until 98 %.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[residuos de chirimoya]]></kwd>
<kwd lng="es"><![CDATA[adsorbentes carbonáceos]]></kwd>
<kwd lng="es"><![CDATA[remoción de colorantes]]></kwd>
<kwd lng="es"><![CDATA[tratamiento de agua residual]]></kwd>
<kwd lng="en"><![CDATA[Custard apple residue]]></kwd>
<kwd lng="en"><![CDATA[carbonaceous adsorbents]]></kwd>
<kwd lng="en"><![CDATA[dyes removal]]></kwd>
<kwd lng="en"><![CDATA[wastewater treatment]]></kwd>
</kwd-group>
</article-meta>
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