<?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>2224-5421</journal-id>
<journal-title><![CDATA[Revista Cubana de Química]]></journal-title>
<abbrev-journal-title><![CDATA[Rev Cub Quim]]></abbrev-journal-title>
<issn>2224-5421</issn>
<publisher>
<publisher-name><![CDATA[Ediciones UO, Universidad de Oriente]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2224-54212020000200218</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Assessment of technological alternatives for cyanide waste waters management in gold ores processing plant]]></article-title>
<article-title xml:lang="es"><![CDATA[Evaluación de alternativas tecnológicas para la gestión de residuales cianurados en una planta de procesamiento de minerales auríferos]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Jiménez-Prieto]]></surname>
<given-names><![CDATA[Yamell]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Esperanza-Pérez]]></surname>
<given-names><![CDATA[Guillermo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ramírez-González]]></surname>
<given-names><![CDATA[Surey]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Alomas-Vicente]]></surname>
<given-names><![CDATA[Inés de la C.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Central &#8220;Marta Abreu de Las Villas&#8221; Centro de Estudios de Química Aplicada ]]></institution>
<addr-line><![CDATA[Villa Clara ]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2020</year>
</pub-date>
<volume>32</volume>
<numero>2</numero>
<fpage>218</fpage>
<lpage>231</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S2224-54212020000200218&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S2224-54212020000200218&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S2224-54212020000200218&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT In this work, the wastewater from a gold ores processing plant was characterized, finding at present high contents of cyanides and heavy metals (As, Fe, Cd, Co, Cu, Ni). These wastewaters are temporarily stored at containment pools, close to reaching their maximum capacity limits. Two technological alternatives for its safe management were evaluated: alkaline chlorination and advanced oxidation method using ozone gas. The main advantages and disadvantages of both technological proposals are highlighted. On the other hand, considering the material and energy balances was made an estimate of the investment and treatment costs for both alternatives. The dynamic indicators of cost were calculated, confirming the technical, economic and environmental viability of ozone oxidation in the wastewater treatment, and the feasibility of its implementation, allowing the initial investment to be recovered in one year.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN En este trabajo fueron caracterizadas las aguas residuales pertenecientes a una planta de procesamiento de minerales auríferos, encontrando en las mismas elevados contenidos de cianuros y metales pesados (As, Fe, Cd, Co, Cu, Ni). Estos residuales se encuentran almacenados temporalmente en piscinas de contención que están próximas a alcanzar su límite máximo de capacidad. Fueron evaluadas dos alternativas tecnológicas para la gestión segura de estas aguas: la cloración alcalina y el método de oxidación avanzada con gas ozono. Se destacan las ventajas y desventajas de cada una de las variantes tecnológicas. Por otra parte, teniendo en cuenta los balances de materiales y energía, fueron estimados los costos de inversión y de tratamiento para ambas tecnologías. También fueron calculados los indicadores dinámicos de los costos, confirmándose la viabilidad técnica, económica y ambiental de la oxidación con ozono en el tratamiento de estas aguas residuales, y la factibilidad de su implementación, permitiendo que la inversión inicial sea recuperada en un período de un año.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[cyanides]]></kwd>
<kwd lng="en"><![CDATA[wastewater]]></kwd>
<kwd lng="en"><![CDATA[alkaline chlorination]]></kwd>
<kwd lng="en"><![CDATA[advanced oxidation processes]]></kwd>
<kwd lng="en"><![CDATA[ozone]]></kwd>
<kwd lng="es"><![CDATA[cianuros]]></kwd>
<kwd lng="es"><![CDATA[aguas residuales]]></kwd>
<kwd lng="es"><![CDATA[cloración alcalina]]></kwd>
<kwd lng="es"><![CDATA[procesos avanzados de oxidación]]></kwd>
<kwd lng="es"><![CDATA[ozono]]></kwd>
</kwd-group>
</article-meta>
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