<?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>S0188-49992018000200307</article-id>
<article-id pub-id-type="doi">10.20937/rica.2018.34.02.11</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[REMOVAL OF Cd(II) AND Pb(II) FROM AQUEOUS SOLUTIONS BY PISTACHIO HULL WASTE]]></article-title>
<article-title xml:lang="es"><![CDATA[REMOCIÓN DE Cd(II) Y Pb(II) MEDIANTE RESIDUOS DE CÁSCARA DE PISTACHE]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hamidpour]]></surname>
<given-names><![CDATA[Mohsen]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hosseini]]></surname>
<given-names><![CDATA[Nahid]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mozafari]]></surname>
<given-names><![CDATA[Vahid]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Heshmati Rafsanjani]]></surname>
<given-names><![CDATA[Mohammad]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Vali-e-Asr University of Rafsanjan  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Iran</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2018</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2018</year>
</pub-date>
<volume>34</volume>
<numero>2</numero>
<fpage>307</fpage>
<lpage>316</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0188-49992018000200307&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0188-49992018000200307&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0188-49992018000200307&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT The aim of this study was to use the raw pistachio hull powder for the removal of Cd(II) and Pb(II) from aqueous solutions. The kinetic experiments showed that the biosorption of Cd(II) and Pb(II) on the adsorbent is rapid, and maximum biosorption capacities were achieved in 2 h. The time-dependent biosorption of Cd(II) and Pb(II) onto the adsorbent were well described by both the pseudo-first-order and the pseudo-second-order models. The experimental adsorption capacity (q  exp ) was close to that calculated from these two models. The equilibrium adsorption of Cd(II) and Pb(II) was satisfactorily described by the Sips isotherm. The adsorption isotherms showed that the affinity of Cd(II) and Pb(II) to the adsorbent increased with pH. Based on the estimates obtained by the Visual MINTEQ code, the Pb2+ and Cd2+ species were the dominant ones in the solutions at pH &#8804; 7.0 and &#8804; 8.5, respectively. The Fourier transform-infrared results confirmed the interactions between metals and functional groups present on the surface of pistachio hull. These findings show that the raw pistachio hull powder used in this study exhibited a high adsorption capacity for Cd(II) and Pb(II), and thus it may be useful for the immobilization of these metals from polluted sites.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN El objetivo de este estudio fue utilizar polvo de cáscara de pistache sin procesar para remover Cd(II) y Pb(II) de soluciones acuosas. Los experimentos cinéticos mostraron que la bioadsorción de Cd(II) y Pb(II) en el adsorbente es rápida y las capacidades máximas de bioadsorción se alcanzan en 2 h. Se describió ampliamente la bioadsorción dependiente del tiempo de Cd(II) y Pb(II) en el adsorbente tanto para el seudomodelo de primer orden como para el de segundo orden. Los valores de la capacidad experimental de adsorción (q  exp ) fueron cercanos a los calculados mediante estos modelos. El equilibrio de adsorción de Cd(II) y Pb(II) fue descrito satisfactoriamente por la isoterma de Sips. Las isotermas de adsorción mostraron que la afinidad de Cd(II) y Pb(II) por el adsorbente se incrementó con el pH. Con base en las estimaciones obtenidas mediante el código Visual MINTEQ, se encontró que Pb2+ y Cd2+ fueron las especies dominantes en las soluciones con pH &#8804; 7.0 y &#8804; 8.5, respectivamente. Los resultados de la espectrometría infrarroja por transformadas de Fourier confirmaron las interacciones entre los metales y los grupos funcionales presentes en la superficie de la cáscara de pistache. Estos resultados muestran que el polvo de cáscara de pistache sin procesar utilizado en el presente estudio tuvo una alta capacidad de adsorción para Cd(II) y Pb(II), y por consiguiente podría ser de utilidad para remover estos metales de sitios contaminados.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[biosorption]]></kwd>
<kwd lng="en"><![CDATA[heavy metals]]></kwd>
<kwd lng="en"><![CDATA[waste materials]]></kwd>
<kwd lng="en"><![CDATA[pollution]]></kwd>
<kwd lng="es"><![CDATA[bioadsorción]]></kwd>
<kwd lng="es"><![CDATA[metales pesados]]></kwd>
<kwd lng="es"><![CDATA[materiales de desecho]]></kwd>
<kwd lng="es"><![CDATA[contaminación]]></kwd>
</kwd-group>
</article-meta>
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