<?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>2007-1132</journal-id>
<journal-title><![CDATA[Revista mexicana de ciencias forestales]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. mex. de cienc. forestales]]></abbrev-journal-title>
<issn>2007-1132</issn>
<publisher>
<publisher-name><![CDATA[Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-11322018000200080</article-id>
<article-id pub-id-type="doi">10.29298/rmcf.v9i46.137</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Destintado de papel de impresión láser con ultrasonido de acción intensiva, para obtener celulosa de alta pureza]]></article-title>
<article-title xml:lang="en"><![CDATA[Deinking of laser printing with ultrasound of intensive action to obtain high purity cellulose]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ramírez Casillas]]></surname>
<given-names><![CDATA[Rogelio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ramírez Valdovinos]]></surname>
<given-names><![CDATA[Enrique]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Carrillo Parra]]></surname>
<given-names><![CDATA[Artemio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Dávalos Olivares]]></surname>
<given-names><![CDATA[Florentina]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Navarro Arzate]]></surname>
<given-names><![CDATA[Fernando]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Guadalajara Departamento de Madera, Celulosa y Papel ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma de Nuevo León Facultad de Ciencias Forestales ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>04</month>
<year>2018</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>04</month>
<year>2018</year>
</pub-date>
<volume>9</volume>
<numero>46</numero>
<fpage>80</fpage>
<lpage>101</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-11322018000200080&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-11322018000200080&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-11322018000200080&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: Se presenta un estudio sobre destintado de papel desperdicio de oficina impreso con láser, mediante ultrasonido de acción intensiva, combinado con etapas de flotación y lavado. El material tratado se evaluó para determinar su uso como base para generar celulosa grado soluble. El papel desperdicio se rasgó manualmente y desintegró a 1.2 % de consistencia, durante 10 min. La fibra desintegrada se trató con ultrasonido de acción intensiva. En esta etapa, se usó un diseño experimental multifactorial 2k, cuyos parámetros fueron: tiempo de aplicación de ultrasonido (min), consistencia (%), temperatura ((C) y tiempo de pausa de aplicación por ultrasonido, y se consideró como variable de respuesta el número de partículas de tinta m-² de papel. En las etapas de flotación y lavado se utilizó baja consistencia y un surfactante comercial. La pulpa destintada se evaluó mediante el análisis de diversos parámetros de calidad tales como, contenido de (-celulosa, blancura, color CIE L*, a*, b* y el conteo de partículas residuales m-2, con base en las normas TAPPI. Los resultados indican que el destintado propuesto tuvo gran eficiencia en generar fragmentos de tóner, de tamaño entre 25-50 y 50-100 µm. Estas partículas fueron eliminadas en la flotación y el lavado. La mejor remoción de tinta m-2 de papel, se logró con 20 minutos de tratamiento, 0.5 % de consistencia, 25 ºC y ultrasonido en forma continua. Finalmente, las propiedades de la pulpa obtenida bajo condiciones óptimas indican que puede utilizarse en productos grado papelero e incluso para generar celulosa grado soluble, con la aplicación de algún blanqueo posterior.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: A study on the deinking of office waste paper printed with laser is presented, applying ultrasound of intensive action, combined with stages of flotation and washing. The treated material was evaluated to determine its use as a basis for generating soluble grade cellulose. The waste paper was manually torn and disintegrated at 1.2 % consistency, for 10 min. The disintegrated fiber was treated with intensive-action ultrasound. At this stage, a 2k multifactorial experimental design was applied, in which the parameters time (min), consistency (%), temperature ((C) and time of pause of application by ultrasound were used; while the number of ink particles m-² of paper, was the response variable. Low consistency and commercial surfactant were used in the flotation and washing steps. The deinked pulp was evaluated by analyzing various quality parameters such as (-cellulose content, brightness, CIE color L *, a *, b * and the residual particle count m-², using TAPPI standards. The obtained results indicate that the proposed deinking showed great efficiency in generating fragments of toner, of size between 25-50 and 50-100 µm. These particles were removed in flotation and washing. The best removal of ink m-² of paper was obtained with 20 minutes of treatment, 0.5 % consistency, 25 (C and continuous ultrasound application. Finally, the properties of the pulp obtained under optimized conditions indicate that it can be reused in paper grade products and even to generate soluble grade cellulose by applying some subsequent bleaching.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Celulosa de alta pureza]]></kwd>
<kwd lng="es"><![CDATA[destintado]]></kwd>
<kwd lng="es"><![CDATA[flotación]]></kwd>
<kwd lng="es"><![CDATA[lavado]]></kwd>
<kwd lng="es"><![CDATA[papel impresión láser]]></kwd>
<kwd lng="es"><![CDATA[ultrasonido de acción intensiva]]></kwd>
<kwd lng="en"><![CDATA[High purity cellulose]]></kwd>
<kwd lng="en"><![CDATA[deinking]]></kwd>
<kwd lng="en"><![CDATA[flotation]]></kwd>
<kwd lng="en"><![CDATA[washing]]></kwd>
<kwd lng="en"><![CDATA[laser printing paper]]></kwd>
<kwd lng="en"><![CDATA[ultrasonic intensive action]]></kwd>
</kwd-group>
</article-meta>
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