<?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>0121-1129</journal-id>
<journal-title><![CDATA[Revista Facultad de Ingeniería]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. Fac. ing.]]></abbrev-journal-title>
<issn>0121-1129</issn>
<publisher>
<publisher-name><![CDATA[Universidad Pedagógica y Tecnológica de Colombia]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0121-11292017000300123</article-id>
<article-id pub-id-type="doi">10.19053/01211129.v26.n46.2017.7324</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Morphological and physicochemical characterization of biochar produced by gasification of selected forestry species]]></article-title>
<article-title xml:lang="es"><![CDATA[Caracterización morfológica y fisico-química de biocarbonos producidos por la gasificación de especies forestales seleccionadas]]></article-title>
<article-title xml:lang="pt"><![CDATA[Caracterização morfológica e físico-química de biocarvões produzidos pela gasificação de espécies florestais selecionadas]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Suárez-Hernández]]></surname>
<given-names><![CDATA[Laura]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ardila-A.]]></surname>
<given-names><![CDATA[Alba N.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Barrera-Zapata]]></surname>
<given-names><![CDATA[Rolando]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto de la Ciencia y la Tecnología Alimentaria INTAL  ]]></institution>
<addr-line><![CDATA[Medellín Antioquia]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Politécnico Colombiano Jaime Isaza Cadavid  ]]></institution>
<addr-line><![CDATA[Medellín Antioquia]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad de Antioquia  ]]></institution>
<addr-line><![CDATA[Medellín Antioquia]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2017</year>
</pub-date>
<volume>26</volume>
<numero>46</numero>
<fpage>123</fpage>
<lpage>130</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0121-11292017000300123&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0121-11292017000300123&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0121-11292017000300123&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract In this study, biochar samples acquired as by-product by downdraft gasification at 700 °C from Eucalyptus grandis (BC-EG), Acacia magnium (BC-AM) and Gmelina arbórea (BC-GA) were characterized. The morphological characteristics and physicochemical properties of biochar were studied using nitrogen physisorption by the Brunauer-Emmet-Teller (BET) method, Scanning Electron Microscopy (SEM), X-ray Energy Dispersive Spectrometry (EDX) and Fourier Transform Infrared Spectroscopy (FTIR). The surface area (SA) of the materials was in the 2.0-50.0 m2/g range, with the biochar obtained from BC-EG showing the highest SA (50.0 m2/g), while the biochar derived from BC-GA showed the lowest SA (2.0 m2/g). In addition, all samples can be classified as mesoporous materials because their pore sizes were between 2 and 50 nm. This indicates that these materials can be used in absorption processes; however, the biochar obtained from BC-AM is expected to be the most suitable for absorption applications. FTIR biochar spectra did not exhibit characteristic peaks for cellulose or hemicellulose in any sample due to decomposition of these compounds at the gasification temperature. Moreover, according to SEM/EDX analyzes, all the samples presented well-defined pore structure and contained minerals as Na, K and Ca, suggesting that the biochar could also be useful for soil amendment applications.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen En este estudio se caracterizaron muestras de biocarbones obtenidos como subproducto del proceso de gasificación, en lecho fijo a 700 °C, de las especies Eucalyptus grandis (BC-EG), Acacia magnium (BC-AM) y Gmelina arbórea (BC-GA). Sus características morfológicas y propiedades fisicoquímicas se evaluaron usando fisisorción de nitrógeno por el método de Brunauer-Emmet-Teller (BET), espectroscopia de dispersión de energía de rayos X (EDS) y espectroscopia infrarroja con Transformada de Fourier (FTIR). Los biocarbones analizados presentaron áreas superficiales en el rango de 2.0-50.0 m2/g; el biocarbón originado de la especie BC-EG presentó la mayor área superficial (50.0 m2/g), mientras que el biocarbón obtenido de BC-GA mostró la menor (2.0 m2/g). Por otro lado, las muestras obtenidas pueden clasificarse como materiales mesoporosos debido a que su tamaño de poro estuvo entre 2 y 50 nm; esto indica que dichos materiales pueden usarse en procesos de absorción, aunque, se espera que el material proveniente de BC-AM sea el más adecuado para este tipo de aplicaciones. Los espectros FTIR no mostraron picos característicos de celulosa y hemicelulosa en ninguna de las muestras, lo cual se atribuye a su descomposición por las temperaturas alcanzadas en los procesos de gasificación. Adicionalmente, de acuerdo a los análisis SEM/EDX todas las muestras analizadas presentan estructuras de poros bien definidas y contienen minerales como Na, K y Ca, lo cual sugiere que los biocarbones también podrían ser considerados para remediación de suelos.]]></p></abstract>
<abstract abstract-type="short" xml:lang="pt"><p><![CDATA[Resumo Neste estudo caracterizaram-se amostras de biocarvões obtidos como subproduto do processo de gasificação, em leito fixo a 700 °C, das espécies Eucalyptus grandis (BC-EG), Acacia magnium (BC-AM) e Gmelina arborea (BC-GA). Suas características morfológicas e propriedades físico-químicas avaliaram-se usando fisisorção de nitrogênio pelo método de Brunauer-Emmet-Teller (BET), espectroscopia de dispersão de energia de raios X (EDS) e espectroscopia infravermelha com Transformada de Fourier (FTIR). Os biocarvões analisados apresentaram áreas superficiais na faixa de 2.0-50.0 m2/g; o biocarvão originado da espécie BC-EG apresentou a maior área superficial (50.0 m2/g), enquanto que o biocarvão obtido de BC-GA mostrou a menor (2.0 m2/g). Por outro lado, as amostras obtidas podem classificar-se como materiais mesoporosos devido a que seu tamanho de poro esteve entre 2 e 50 nm; isto indica que ditos materiais podem usar-se em processos de absorção, ainda que, espera-se que o material proveniente de BC-AM seja o mais adequado para este tipo de aplicações. Os espectros FTIR não mostraram picos característicos de celulose e hemicelulose em nenhuma das amostras, o que se atribui a sua decomposição pelas temperaturas alcançadas nos processos de gasificação. Adicionalmente, de acordo às análises SEM/EDX todas as amostras analisadas apresentam estruturas de poros bem definidas e contêm minerais como Na, K e Ca, o qual sugere que os biocarvões também poderiam ser considerados para remediação de solos.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Acacia]]></kwd>
<kwd lng="en"><![CDATA[Biomass charcoal]]></kwd>
<kwd lng="en"><![CDATA[Eucalyptus]]></kwd>
<kwd lng="en"><![CDATA[Forestry products]]></kwd>
<kwd lng="en"><![CDATA[Forestry species]]></kwd>
<kwd lng="en"><![CDATA[Gmelina]]></kwd>
<kwd lng="en"><![CDATA[Physicochemical property]]></kwd>
<kwd lng="es"><![CDATA[Acacia]]></kwd>
<kwd lng="es"><![CDATA[Biocarbón]]></kwd>
<kwd lng="es"><![CDATA[Especies forestales]]></kwd>
<kwd lng="es"><![CDATA[Eucalyptus]]></kwd>
<kwd lng="es"><![CDATA[Gmelina]]></kwd>
<kwd lng="es"><![CDATA[Productos forestales]]></kwd>
<kwd lng="es"><![CDATA[Propiedades fisicoquímicas]]></kwd>
<kwd lng="pt"><![CDATA[Acácia]]></kwd>
<kwd lng="pt"><![CDATA[Biocarvão]]></kwd>
<kwd lng="pt"><![CDATA[Espécies florestais]]></kwd>
<kwd lng="pt"><![CDATA[Eucalyptus]]></kwd>
<kwd lng="pt"><![CDATA[Gmelina]]></kwd>
<kwd lng="pt"><![CDATA[Produtos florestais]]></kwd>
<kwd lng="pt"><![CDATA[Propriedades físico-químicas]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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