<?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>0121-750X</journal-id>
<journal-title><![CDATA[Ingeniería]]></journal-title>
<abbrev-journal-title><![CDATA[ing.]]></abbrev-journal-title>
<issn>0121-750X</issn>
<publisher>
<publisher-name><![CDATA[Universidad Distrital Francisco José de Caldas]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0121-750X2017000100098</article-id>
<article-id pub-id-type="doi">10.14483/udistrital.jour.reving.2017.1.a05</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Evaluación de los Parámetros Fisicoquímicos en un Reactor Discontinuo de Lodos Activados para el Tratamiento de Aguas con Metanol]]></article-title>
<article-title xml:lang="en"><![CDATA[Evaluation of Physicochemical Parameters in Discontinuous Reactors of Activated Sludge for the Treatment of Waters with Methanol]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Caravali]]></surname>
<given-names><![CDATA[Marvin]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Lotte]]></surname>
<given-names><![CDATA[Martha L.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Echeverry]]></surname>
<given-names><![CDATA[Lena Carolina]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Distrital Francisco José de Caldas Facultad de Ingeniería ]]></institution>
<addr-line><![CDATA[Bogotá ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>04</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>04</month>
<year>2017</year>
</pub-date>
<volume>22</volume>
<numero>1</numero>
<fpage>98</fpage>
<lpage>110</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0121-750X2017000100098&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0121-750X2017000100098&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0121-750X2017000100098&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Contexto:  En la actualidad existen varios tipos de tecnologías limpias que ayudan a la descontaminación del agua residual industrial, como los sistemas de lodos activados. Dichas tecnologías han resultado efectivas en la remoción de materia orgánica y coloidal en aguas residuales domésticas e industriales, biosorción de metales pesados y remoción de patógenos y nutrientes (N y P). Lo anterior motiva la propuesta de trabajar con un sistema de tratamiento de lodos activados a escala en un ambiente controlado, a fin de demostrar su efectividad en tratamiento de aguas con metanol.  Método:  El sistema de tratamiento de lodos activados se diseña y construye a escala a nivel de laboratorio para estudiar diferentes concentraciones de metanol en aguas residuales de una industria. En los montajes de cinco sistemas de tratamiento se realizan mediciones de parámetros fisicoquímicos como: pH, oxígeno disuelto, temperatura, demanda química de oxígeno, sólidos suspendidos totales y la pérdida de metanol; a las 0, 24 y 48 h por cuadruplicado para observar el comportamiento de dichos parámetros durante la reducción de metanol.  Resultados:  Para los sistemas de lodos activados se demuestra una perdida promedio de metanol del 10,3 %. Los promedios de oxígeno disuelto decrecieron en el tiempo, aunque la demanda química de oxígeno es variable. Cada sistema con concentración diferente de metanol presenta comportamiento particular.  Conclusiones:  Esta investigación indica que la biodegradación de metanol en aguas residuales industriales es posible, teniendo en cuenta que en el sistema de tratamiento a escala se obtuvo una disminución de metanol en el tiempo. Además, los resultados motivan a continuar investigando sobre esta tecnología limpia, de la cual no se dispone suficiente literatura en lo que respecta al manejo de lodos activados para la eliminación de metanol.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Context:  There are currently several types of clean technologies that help the decontamination of industrial wastewater, such as activated sludge systems. These technologies have proved effective in the removal of organic matter and colloidal in domestic wastewater and industrial, biosorption of heavy metals, and removal of pathogens and nutrients (N and P). It previous motivates the proposal of work with a system of treatment of sludge activated to scale in an environment controlled, to demonstrate its effectiveness in treatment of waters with methanol.  Method:  The treatment system of activated sludge is designed and built to scale in laboratory level to study different concentrations of methanol in waste water from one industry. In assembly of five treatment systems is measured physicochemical parameters as: pH, dissolved oxygen, temperature, chemical oxygen demand, total suspended solids, and loss of methanol, at 0, 24 and 48 h by quadruplicate to observe the behavior of these parameters during the reduction of methanol.  Results:  For activated sludge systems is demonstrated an average loss of 10.3 % methanol. The averages of dissolved oxygen decrease in the time although chemical oxygen demand is variable. Each system with different concentration of methanol presents behavior.  Conclusions:  This research indicates that the biodegradation of methanol in industrial wastewater is possible, bearing in mind that the treatment system to scale was obtained a decrease of methanol in the time. In addition, the results motivate continue researching this clean technology, which does not have sufficient literature about the handling of activated sludge to the elimination of methanol.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Metanol fisicoquímica]]></kwd>
<kwd lng="es"><![CDATA[lodos activados]]></kwd>
<kwd lng="es"><![CDATA[metanol]]></kwd>
<kwd lng="es"><![CDATA[reactor discontinuo]]></kwd>
<kwd lng="es"><![CDATA[tratamiento de aguas]]></kwd>
<kwd lng="es"><![CDATA[Idioma:Español]]></kwd>
<kwd lng="en"><![CDATA[Activated sludge]]></kwd>
<kwd lng="en"><![CDATA[batch reactor]]></kwd>
<kwd lng="en"><![CDATA[methanol]]></kwd>
<kwd lng="en"><![CDATA[physicochemical]]></kwd>
<kwd lng="en"><![CDATA[water treatment.]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<label>[1]</label><nlm-citation citation-type="">
<collab>Methanex Corporation</collab>
<source><![CDATA[Formulario de informacion anual]]></source>
<year>2011</year>
</nlm-citation>
</ref>
<ref id="B2">
<label>[2]</label><nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Osorio]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
</person-group>
<source><![CDATA[Metanol obtención y usos . Petroblogger.com: Blog sobre la industria de petroleo y gas natural]]></source>
<year>2011</year>
</nlm-citation>
</ref>
<ref id="B3">
<label>[3]</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Rodriguez]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Uribe Echavarria]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<source><![CDATA[Obtención de metanol: propiedades-usos]]></source>
<year></year>
<publisher-name><![CDATA[Editorial de la Universidad Tecnológica Nacional]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B4">
<label>[4]</label><nlm-citation citation-type="">
<collab>Methanol Institute</collab>
<source><![CDATA[Manual de manipulación segura del metanol]]></source>
<year>2012</year>
</nlm-citation>
</ref>
<ref id="B5">
<label>[5]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Yuan]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
<name>
<surname><![CDATA[Zhi]]></surname>
<given-names><![CDATA[W.]]></given-names>
</name>
<name>
<surname><![CDATA[Liu]]></surname>
<given-names><![CDATA[Y.]]></given-names>
</name>
<name>
<surname><![CDATA[Smiley]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Gallagher]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Chen]]></surname>
<given-names><![CDATA[X.]]></given-names>
</name>
<name>
<surname><![CDATA[Dietrich]]></surname>
<given-names><![CDATA[A.M.]]></given-names>
</name>
<name>
<surname><![CDATA[Zhang]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Degradation of cis and trans-(4-methylcyclohexyl) methanol in activated sludge Journal of hazardous materials]]></article-title>
<source><![CDATA[Journal of Hazardous Materials]]></source>
<year>2016</year>
<volume>306</volume>
<page-range>247-56</page-range></nlm-citation>
</ref>
<ref id="B6">
<label>[6]</label><nlm-citation citation-type="">
<collab>República de Colombia</collab>
<source><![CDATA[Artículos 20 y 21: Decreto 1594 de 1984]]></source>
<year></year>
</nlm-citation>
</ref>
<ref id="B7">
<label>[7]</label><nlm-citation citation-type="">
<collab>Ministerio de Ambiente, Vivienda y Desarrollo Territorial</collab>
<source><![CDATA[Decreto 3930 de 2010]]></source>
<year></year>
</nlm-citation>
</ref>
<ref id="B8">
<label>[8]</label><nlm-citation citation-type="">
<collab>Ministerio de Ambiente y Desarrollo Sostenible</collab>
<source><![CDATA[Decreto 303]]></source>
<year>2012</year>
</nlm-citation>
</ref>
<ref id="B9">
<label>[9]</label><nlm-citation citation-type="">
<collab>Ministerio de Medio Ambiente y Desarrollo Sostenible</collab>
<source><![CDATA[Colombia se prepara para su participacion en la COP 21 en París]]></source>
<year>2016</year>
</nlm-citation>
</ref>
<ref id="B10">
<label>[10]</label><nlm-citation citation-type="">
<collab>IDEAM-ONU, Informacion científica al servicio de la planificación</collab>
<source><![CDATA[Tercera comunicación nacional de cambio climático]]></source>
<year>2016</year>
</nlm-citation>
</ref>
<ref id="B11">
<label>[11]</label><nlm-citation citation-type="">
<collab>IDEAM, UNDP y República de Colombia</collab>
<source><![CDATA[Primer Informe bienal de actualización de Colombia ante la convención marco de las naciones unidas sobre el cambio climático]]></source>
<year>2015</year>
</nlm-citation>
</ref>
<ref id="B12">
<label>[12]</label><nlm-citation citation-type="">
<collab>Superintendencia de Servicios Públicos</collab>
<source><![CDATA[Informe técnico sobre sistemas de tratamiento de aguas residuales en Colombia]]></source>
<year>2013</year>
</nlm-citation>
</ref>
<ref id="B13">
<label>[13]</label><nlm-citation citation-type="">
<collab>Procuraduría General de la Nación</collab>
<article-title xml:lang=""><![CDATA[Capítulo 1: El estado del agua, el alcantarillado y los residuos solidos en los municipios]]></article-title>
<source><![CDATA[El agua potable y el saneamiento básico en los planes de desarrollo]]></source>
<year></year>
</nlm-citation>
</ref>
<ref id="B14">
<label>[14]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Kaviraj]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Bhunia]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<name>
<surname><![CDATA[Saha]]></surname>
<given-names><![CDATA[N.C.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Toxicity of Methanol to Fish, Crustacean, Oligochaete Worm, and Aquatic Ecosystem]]></article-title>
<source><![CDATA[Int J Toxicol]]></source>
<year>2004</year>
<volume>23</volume>
<page-range>55-63</page-range></nlm-citation>
</ref>
<ref id="B15">
<label>[15]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Idrobo]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Gutierrez]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Electrooxidacion catalítica de metanol en agua]]></article-title>
<source><![CDATA[Revista Biotecnología]]></source>
<year>2006</year>
<volume>4</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>87-94</page-range></nlm-citation>
</ref>
<ref id="B16">
<label>[16]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Louzeiro]]></surname>
<given-names><![CDATA[N.R.]]></given-names>
</name>
<name>
<surname><![CDATA[Mavinic]]></surname>
<given-names><![CDATA[D.S.]]></given-names>
</name>
<name>
<surname><![CDATA[Oldham]]></surname>
<given-names><![CDATA[W.K.]]></given-names>
</name>
<name>
<surname><![CDATA[Meisen]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Gardner]]></surname>
<given-names><![CDATA[I.S.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Methanol induced biological nutrient removal kinetics in a full-scale sequencing batch reactor]]></article-title>
<source><![CDATA[Water research]]></source>
<year>2002</year>
<volume>36</volume>
<page-range>2721-32</page-range></nlm-citation>
</ref>
<ref id="B17">
<label>[17]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Narváez]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
<name>
<surname><![CDATA[Cáceres]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Marfá]]></surname>
<given-names><![CDATA[O.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Depuración de lixiviados procedentes de viveros de ornamentales mediante Â´ humedales artificiales. Eficacia del metanol como fuente carbonada]]></article-title>
<source><![CDATA[Actas de horticultura]]></source>
<year>2014</year>
<numero>68</numero>
<issue>68</issue>
<page-range>239-44</page-range></nlm-citation>
</ref>
<ref id="B18">
<label>[18]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Liu]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
<name>
<surname><![CDATA[Li]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Single chamber microbial fuel cells (SCMFCs) treating wastewater containing methanol]]></article-title>
<source><![CDATA[International journal of hydrogen energy]]></source>
<year>2014</year>
<volume>39</volume>
<page-range>2340-4</page-range></nlm-citation>
</ref>
<ref id="B19">
<label>[19]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Cao]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Zhang]]></surname>
<given-names><![CDATA[Y.]]></given-names>
</name>
<name>
<surname><![CDATA[Chen]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
<name>
<surname><![CDATA[Liu]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Mao]]></surname>
<given-names><![CDATA[K.]]></given-names>
</name>
<name>
<surname><![CDATA[Li]]></surname>
<given-names><![CDATA[K.]]></given-names>
</name>
<name>
<surname><![CDATA[Zhou]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Production of a bioflocculant from methanol wastewater and its application in arsenite removal]]></article-title>
<source><![CDATA[Chemosphere]]></source>
<year>2015</year>
<volume>141</volume>
<page-range>274-81</page-range></nlm-citation>
</ref>
<ref id="B20">
<label>[20]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Shimoda]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Fujii]]></surname>
<given-names><![CDATA[T.]]></given-names>
</name>
<name>
<surname><![CDATA[Hayashi]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Oshima]]></surname>
<given-names><![CDATA[Y.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Kinetic analysis of the mixture effect in supercritical water oxidation of ammonia/methanol]]></article-title>
<source><![CDATA[J. of supercritical fluids]]></source>
<year>2016</year>
<volume>116</volume>
<page-range>232-8</page-range></nlm-citation>
</ref>
<ref id="B21">
<label>[21]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Torresi]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Escola Casas]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Polesel]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<name>
<surname><![CDATA[Plósz]]></surname>
<given-names><![CDATA[B.G.]]></given-names>
</name>
<name>
<surname><![CDATA[Christensson]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Bester]]></surname>
<given-names><![CDATA[K.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Impact of external carbon Â´ dose on the removal of micropollutants using methanol and ethanol in post-denitrifying moving bed biofilm reactors]]></article-title>
<source><![CDATA[Water Research]]></source>
<year>2016</year>
</nlm-citation>
</ref>
<ref id="B22">
<label>[22]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Kamanina]]></surname>
<given-names><![CDATA[O.A.]]></given-names>
</name>
<name>
<surname><![CDATA[Lavrova]]></surname>
<given-names><![CDATA[D.G.]]></given-names>
</name>
<name>
<surname><![CDATA[Arlyapov]]></surname>
<given-names><![CDATA[V.A.]]></given-names>
</name>
<name>
<surname><![CDATA[Alferov]]></surname>
<given-names><![CDATA[V.A.]]></given-names>
</name>
<name>
<surname><![CDATA[Ponamoreva]]></surname>
<given-names><![CDATA[O. N.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Silica sol-gel encapsulated methylotrophic yeast as filling of biofilters for the removal of methanol from industrial wastewater]]></article-title>
<source><![CDATA[Enzyme and Microbial Technology]]></source>
<year>2016</year>
<volume>92</volume>
<page-range>94-8</page-range></nlm-citation>
</ref>
<ref id="B23">
<label>[23]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Saha]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Badhe]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
<name>
<surname><![CDATA[De Vrieze]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Biswas]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Nandy]]></surname>
<given-names><![CDATA[T.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Methanol in-duces low temperature resilient methanogens and improves methane generation from do-mestic wastewater at low to moderate temperatures]]></article-title>
<source><![CDATA[Bioresource Technology]]></source>
<year>2015</year>
<volume>189</volume>
<page-range>370-8</page-range></nlm-citation>
</ref>
<ref id="B24">
<label>[24]</label><nlm-citation citation-type="book">
<collab>Metcalf and Eddy</collab>
<source><![CDATA[Wastewater Engineering Treatment and Reuse]]></source>
<year>2014</year>
<edition>Fifth</edition>
<publisher-loc><![CDATA[New York ]]></publisher-loc>
<publisher-name><![CDATA[Mc Graw Hill Education]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B25">
<label>[25]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Matsumoto]]></surname>
<given-names><![CDATA[T.]]></given-names>
</name>
<name>
<surname><![CDATA[Sánchez Ortiz]]></surname>
<given-names><![CDATA[I.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Desempeño de la planta de tratamiento de aguas residuales de São João de Iracema (Brasil)]]></article-title>
<source><![CDATA[Revista Ingniería]]></source>
<year>2016</year>
<volume>21</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>176-86</page-range></nlm-citation>
</ref>
<ref id="B26">
<label>[26]</label><nlm-citation citation-type="book">
<collab>Eddy, &amp; Metcalf</collab>
<source><![CDATA[Procesos biológicos unitarios]]></source>
<year>1996</year>
<publisher-name><![CDATA[Universidad de Salamanca. Centro de investigación de desarrollo tecnológico del agua]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B27">
<label>[27]</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Molina Perez]]></surname>
<given-names><![CDATA[F.J.]]></given-names>
</name>
<name>
<surname><![CDATA[Rodríguez]]></surname>
<given-names><![CDATA[D.C.]]></given-names>
</name>
</person-group>
<source><![CDATA[Manual de laboratorio de procesos biológicos]]></source>
<year>2008</year>
<publisher-loc><![CDATA[Medellín, Colombia ]]></publisher-loc>
<publisher-name><![CDATA[Universidad Nacional de Colombia]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B28">
<label>[28]</label><nlm-citation citation-type="">
<collab>ICONTEC</collab>
<source><![CDATA[Norma técnica colombiana 3629. Calidad del agua.demanda química de oxígeno (DQO)]]></source>
<year>2002</year>
<publisher-loc><![CDATA[ICONTEC ]]></publisher-loc>
</nlm-citation>
</ref>
<ref id="B29">
<label>[29]</label><nlm-citation citation-type="book">
<collab>ICONTEC</collab>
<source><![CDATA[Norma Técnica Colombiana 5159. Bebidas alcoholicas. Método colorimétrico para determinar el contenido de metanol]]></source>
<year>2003</year>
<publisher-loc><![CDATA[Bogotá D.C. ]]></publisher-loc>
<publisher-name><![CDATA[ICONTEC]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B30">
<label>[30]</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Salam]]></surname>
<given-names><![CDATA[Al-D.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Methanol removal from methanol-water mixture using municipal activated sludge]]></article-title>
<source><![CDATA[Journal of Engineering Science and Technology]]></source>
<year>2013</year>
<volume>8</volume>
<numero>5</numero>
<issue>5</issue>
<page-range>578-87</page-range></nlm-citation>
</ref>
<ref id="B31">
<label>[31]</label><nlm-citation citation-type="">
<collab>Instituto Nacional de Salud</collab>
<source><![CDATA[Protocolo de vigilancia y control de intoxicaciones por metanol]]></source>
<year>2011</year>
<publisher-loc><![CDATA[Bogotá D.C. ]]></publisher-loc>
</nlm-citation>
</ref>
</ref-list>
</back>
</article>
