<?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>0121-1935</journal-id>
<journal-title><![CDATA[Revista de Ciencias]]></journal-title>
<abbrev-journal-title><![CDATA[rev. cienc.]]></abbrev-journal-title>
<issn>0121-1935</issn>
<publisher>
<publisher-name><![CDATA[Universidad del Valle]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0121-19352017000100101</article-id>
<article-id pub-id-type="doi">10.25100/rc.v21i1.6344</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[An Electrochemical Desalination Cell Based On Conducting Polymers]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Torres Hernández]]></surname>
<given-names><![CDATA[Walter]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad del Valle Departamento de Química ]]></institution>
<addr-line><![CDATA[Cali ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2017</year>
</pub-date>
<volume>21</volume>
<numero>1</numero>
<fpage>101</fpage>
<lpage>111</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0121-19352017000100101&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0121-19352017000100101&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0121-19352017000100101&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Insufficient access to potable water is becoming one of the major threats to sustainable development around the globe. The implementation of water conservation policies and the use of mature and novel desalination technologies are key to address the water demand for an increasing population. Desalination systems based on electrochemical cells are of current interest. This paper discusses an electrochemical cell based on carbon electrodes modified with polypyrrole and a polypyrrole/polystyrene sulfonate composite which have anion and cation exchange properties, respectively. The cell was used to substantially decrease the concentration of sodium chloride solution in the 10-1 and the 10-2 M concentration range. The long term stability of this cell is also discussed.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[desalination]]></kwd>
<kwd lng="en"><![CDATA[deionization]]></kwd>
<kwd lng="en"><![CDATA[polypyrrole]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<label>1</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Subramani]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Jacangelo]]></surname>
<given-names><![CDATA[JG]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Emerging desalination technologies for water treatment A critical review]]></article-title>
<source><![CDATA[Water Res]]></source>
<year>2015</year>
<volume>75</volume>
<page-range>164-87</page-range></nlm-citation>
</ref>
<ref id="B2">
<label>2</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Knust]]></surname>
<given-names><![CDATA[KN]]></given-names>
</name>
<name>
<surname><![CDATA[Hlushkou]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Tallarek]]></surname>
<given-names><![CDATA[U]]></given-names>
</name>
<name>
<surname><![CDATA[Crooks]]></surname>
<given-names><![CDATA[RM]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Electrochemical desalination for a sustainable water future]]></article-title>
<source><![CDATA[Chem Electro Chem]]></source>
<year>2014</year>
<volume>1</volume>
<page-range>850-7</page-range></nlm-citation>
</ref>
<ref id="B3">
<label>3</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Elimelech]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Phillip]]></surname>
<given-names><![CDATA[WA]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The future of seawater desalination energy, technology, and the environment]]></article-title>
<source><![CDATA[Science]]></source>
<year>2011</year>
<volume>333</volume>
<numero>6043</numero>
<issue>6043</issue>
<page-range>712-7</page-range></nlm-citation>
</ref>
<ref id="B4">
<label>4</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Strathmann]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Electrodialysis, a mature technology with a multitude of new applications]]></article-title>
<source><![CDATA[Desalination]]></source>
<year>2010</year>
<volume>264</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>268-88</page-range></nlm-citation>
</ref>
<ref id="B5">
<label>5</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Yoram]]></surname>
<given-names><![CDATA[O]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Capacitive deionization (CDI) for desalination and water treatment - past, present and future (a review)]]></article-title>
<source><![CDATA[Desalination]]></source>
<year>2008</year>
<volume>228</volume>
<numero>1-3</numero>
<issue>1-3</issue>
<page-range>10-29</page-range></nlm-citation>
</ref>
<ref id="B6">
<label>6</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Zangle]]></surname>
<given-names><![CDATA[TA]]></given-names>
</name>
<name>
<surname><![CDATA[Mani]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Santiago]]></surname>
<given-names><![CDATA[JG]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Theory and experiments of concentration polarization and ion focusing at microchannel and nanochannel interfaces]]></article-title>
<source><![CDATA[Chem Soc Rev]]></source>
<year>2010</year>
<volume>39</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>1014-35</page-range></nlm-citation>
</ref>
<ref id="B7">
<label>7</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Feng]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Zhang]]></surname>
<given-names><![CDATA[Q]]></given-names>
</name>
<name>
<surname><![CDATA[Wang]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Yang]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[Xu]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[Yan]]></surname>
<given-names><![CDATA[W]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Application of chemically synthesized polypyrrole with hydro-sponge characteristic as electrode in water desalination]]></article-title>
<source><![CDATA[RSC Advances]]></source>
<year>2015</year>
<volume>5</volume>
<numero>88</numero>
<issue>88</issue>
<page-range>71593-600</page-range></nlm-citation>
</ref>
<ref id="B8">
<label>8</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Liu]]></surname>
<given-names><![CDATA[Q]]></given-names>
</name>
<name>
<surname><![CDATA[Wang]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
<name>
<surname><![CDATA[Zhang]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
<name>
<surname><![CDATA[Xu]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Wang]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Effect of dopants on the adsorbing performance of polypyrrole/graphite electrodes for capacitive deionization process]]></article-title>
<source><![CDATA[Synthetic Metals]]></source>
<year>2012</year>
<volume>162</volume>
<numero>7-8</numero>
<issue>7-8</issue>
<page-range>655-61</page-range></nlm-citation>
</ref>
<ref id="B9">
<label>9</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Yan]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Zou]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[Short]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Polyaniline-modified activated carbon electrodes for capacitive deionization]]></article-title>
<source><![CDATA[Desalination]]></source>
<year>2014</year>
<volume>333</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>101-6</page-range></nlm-citation>
</ref>
<ref id="B10">
<label>10</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Heinze]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Frontana-Uribe]]></surname>
<given-names><![CDATA[BA]]></given-names>
</name>
<name>
<surname><![CDATA[Ludwigs]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Electrochemistry of Conducting Polymers-Persistent Models and New Concepts]]></article-title>
<source><![CDATA[Chem Rev]]></source>
<year>2010</year>
<volume>110</volume>
<numero>8</numero>
<issue>8</issue>
<page-range>4724-71</page-range></nlm-citation>
</ref>
<ref id="B11">
<label>11</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Das]]></surname>
<given-names><![CDATA[TK]]></given-names>
</name>
<name>
<surname><![CDATA[Prusty]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Review on Conducting Polymers and Their Applications]]></article-title>
<source><![CDATA[Polymer-Plastics Technol Engineering]]></source>
<year>2012</year>
<volume>51</volume>
<numero>14</numero>
<issue>14</issue>
<page-range>1487-500</page-range></nlm-citation>
</ref>
<ref id="B12">
<label>12</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Kumar]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Singh]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Yadav]]></surname>
<given-names><![CDATA[BC]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Conducting Polymers Synthesis, Properties and Applications]]></article-title>
<source><![CDATA[International Advanced Research Journal in Science, Engineering Technol]]></source>
<year>2015</year>
<volume>2</volume>
<numero>11</numero>
<issue>11</issue>
<page-range>110-24</page-range></nlm-citation>
</ref>
<ref id="B13">
<label>13</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Rubinson]]></surname>
<given-names><![CDATA[JF]]></given-names>
</name>
<name>
<surname><![CDATA[Kayinamura]]></surname>
<given-names><![CDATA[YP]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Charge transport in conducting polymers insights from impedance spectroscopy]]></article-title>
<source><![CDATA[Chem Soc Rev]]></source>
<year>2009</year>
<volume>38</volume>
<numero>12</numero>
<issue>12</issue>
<page-range>3339-47</page-range></nlm-citation>
</ref>
<ref id="B14">
<label>14</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Mangold K-M]]></surname>
</name>
<name>
<surname><![CDATA[Weidlich]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Schuster]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Jüttner]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Ion exchange properties and selectivity of PSS in an electrochemically switchable PPy matrix]]></article-title>
<source><![CDATA[J Appl Electrochem]]></source>
<year>2005</year>
<volume>35</volume>
<numero>12</numero>
<issue>12</issue>
<page-range>1293-301</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[Shimidzu]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
<name>
<surname><![CDATA[Ohtani]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Honda]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Charge-controllable poly pyrrole/poly electrolyte composite membranes Part III. Electrochemical deionization system constructed by anion-exchangeable and cation-exchangeable polypyrrole electrodes]]></article-title>
<source><![CDATA[J Electroanalytical Chem Interfacial Electrochemy]]></source>
<year>1988</year>
<volume>251</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>323-37</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[Nakazawa]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
<name>
<surname><![CDATA[Ebine]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
<name>
<surname><![CDATA[Kusunoki]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Nishizawa]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[Hanna]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Kokado]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Preparation of high quality polypyrrole films]]></article-title>
<source><![CDATA[Jpn J Appl Phys]]></source>
<year>1988</year>
<volume>27</volume>
<page-range>1304-9</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[Wang]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Wu]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Wu]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<name>
<surname><![CDATA[Li]]></surname>
<given-names><![CDATA[X]]></given-names>
</name>
<name>
<surname><![CDATA[Zhang]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Jianbo]]></surname>
<given-names><![CDATA[Z]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Polypyrrole capacitance characteristics with different doping ions and thicknesses]]></article-title>
<source><![CDATA[Phys Chem Chem Phys]]></source>
<year>2017</year>
<volume>19</volume>
<page-range>21165-73</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[Wang]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Xu]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
<name>
<surname><![CDATA[Wang]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Zhu]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Bai]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
<name>
<surname><![CDATA[Xiong]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Study on capacitance evolving mechanism of polypyrrole during prolonged cycling]]></article-title>
<source><![CDATA[J Phys Chem B]]></source>
<year>2014</year>
<volume>118</volume>
<numero>5</numero>
<issue>5</issue>
<page-range>1353-62</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[Vázquez-Rodríguez]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<name>
<surname><![CDATA[Torres-Rodríguez]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[Montes-Rojas]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Synthesis and characterization of commercial cation exchange membranes modified electrochemically by polypyrrole Effect of synthesis conditions on the transport properties]]></article-title>
<source><![CDATA[Desalination]]></source>
<year>2017</year>
<volume>416</volume>
<page-range>94-105</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[Marchesi]]></surname>
<given-names><![CDATA[LFQP]]></given-names>
</name>
<name>
<surname><![CDATA[Simões]]></surname>
<given-names><![CDATA[FR]]></given-names>
</name>
<name>
<surname><![CDATA[Pocrifka]]></surname>
<given-names><![CDATA[LA]]></given-names>
</name>
<name>
<surname><![CDATA[Pereira]]></surname>
<given-names><![CDATA[EC]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Investigation of polypyrrole degradation using electrochemical impedance spectroscopy]]></article-title>
<source><![CDATA[J Physical Chemistry B]]></source>
<year>2011</year>
<volume>115</volume>
<numero>31</numero>
<issue>31</issue>
<page-range>9570-5</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[Rodríguez]]></surname>
<given-names><![CDATA[I]]></given-names>
</name>
<name>
<surname><![CDATA[Scharifker]]></surname>
<given-names><![CDATA[BR]]></given-names>
</name>
<name>
<surname><![CDATA[Mostany]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[In situ FTIR study of redox and overoxidation processes in polypyrrole films]]></article-title>
<source><![CDATA[J Electroanalytical Chemistry]]></source>
<year>2000</year>
<volume>491</volume>
<page-range>117-25</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
