Effect of the nature of the supporting electrolyte on the treatment of soluble oils by electrocoagulation
Identifieur interne : 000D42 ( Main/Exploration ); précédent : 000D41; suivant : 000D43Effect of the nature of the supporting electrolyte on the treatment of soluble oils by electrocoagulation
Auteurs : C. Jimenez Izquierdo [Espagne] ; P. Canizares [Espagne] ; M. A. Rodrigo [Espagne] ; J.-P. Leclerc [France] ; G. Valentin [France] ; François Lapicque [France]Source :
- Desalination [ 0011-9164 ] ; 2010.
Descripteurs français
- Wicri :
- topic : Aluminium, Consommation d'énergie, Fer.
English descriptors
Abstract
Electrochemical wastewater treatment technologies have to be applied to wastes of a sufficient conductivity. In case of too low conductivity of the wastewater salts have to be added to increase it. Therefore it is important to know at least qualitatively the effect of both cations and anions on the overall electrochemical operation. The present investigation was aimed at observing the influence of the electrolyte nature, by considering chloride, sulfate and nitrate anions with sodium, potassium or ammonium cations on the treatment of dilute suspensions of soluble cutting oils, and using Al or Fe electrodes. Aluminium electrodes can be dissolved with a high current efficiency in all cases, whereas dissolution of iron is little efficient with nitrate salts and potassium sulfate. In addition, the cell voltage required with Fe electrodes to allow the same current density can be 2 V higher than with Al plates. The specific energy required for the electrochemical process with a 3 mm gap cell was estimated to range from 0.75 kWh m− 3 with Al electrodes in sodium chloride media to approx. 5 kWh m− 3 with Fe electrodes immersed in sulfate solutions.
Url:
DOI: 10.1016/j.desal.2010.01.022
Affiliations:
- Espagne, France
- Grand Est, Lorraine (région)
- Metz, Nancy
- Centre national de la recherche scientifique, Laboratoire réactions et génie des procédés, Université de Lorraine
Links toward previous steps (curation, corpus...)
- to stream Hal, to step Corpus: 000392
- to stream Hal, to step Curation: 000392
- to stream Hal, to step Checkpoint: 000C01
- to stream Main, to step Merge: 000F11
- to stream Main, to step Curation: 000D42
Le document en format XML
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<ref type="url">http://www.cnrs.fr/</ref>
</desc>
</org>
</tutelle>
</tutelles>
</hal:affiliation>
<country>France</country>
<placeName><settlement type="city">Nancy</settlement>
<settlement type="city">Metz</settlement>
<region type="region" nuts="2">Grand Est</region>
<region type="old region" nuts="2">Lorraine (région)</region>
</placeName>
<orgName type="university">Université de Lorraine</orgName>
<placeName><settlement type="city">Nancy</settlement>
<region type="region" nuts="2">Grand Est</region>
<region type="region" nuts="2">Lorraine (région)</region>
</placeName>
<orgName type="laboratoire" n="5">Laboratoire réactions et génie des procédés</orgName>
<orgName type="university">Université de Lorraine</orgName>
<orgName type="institution">Centre national de la recherche scientifique</orgName>
</affiliation>
</author>
</analytic>
<idno type="DOI">10.1016/j.desal.2010.01.022</idno>
<series><title level="j">Desalination</title>
<idno type="ISSN">0011-9164</idno>
<imprint><date type="datePub">2010</date>
</imprint>
</series>
</biblStruct>
</sourceDesc>
</fileDesc>
<profileDesc><textClass><keywords scheme="mix" xml:lang="en"><term>Aluminium</term>
<term>Electrocoagulation</term>
<term>Energy consumption</term>
<term>Iron</term>
<term>Nature of the electrolyte</term>
</keywords>
<keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Aluminium</term>
<term>Consommation d'énergie</term>
<term>Fer</term>
</keywords>
</textClass>
</profileDesc>
</teiHeader>
<front><div type="abstract" xml:lang="en">Electrochemical wastewater treatment technologies have to be applied to wastes of a sufficient conductivity. In case of too low conductivity of the wastewater salts have to be added to increase it. Therefore it is important to know at least qualitatively the effect of both cations and anions on the overall electrochemical operation. The present investigation was aimed at observing the influence of the electrolyte nature, by considering chloride, sulfate and nitrate anions with sodium, potassium or ammonium cations on the treatment of dilute suspensions of soluble cutting oils, and using Al or Fe electrodes. Aluminium electrodes can be dissolved with a high current efficiency in all cases, whereas dissolution of iron is little efficient with nitrate salts and potassium sulfate. In addition, the cell voltage required with Fe electrodes to allow the same current density can be 2 V higher than with Al plates. The specific energy required for the electrochemical process with a 3 mm gap cell was estimated to range from 0.75 kWh m− 3 with Al electrodes in sodium chloride media to approx. 5 kWh m− 3 with Fe electrodes immersed in sulfate solutions.</div>
</front>
</TEI>
<affiliations><list><country><li>Espagne</li>
<li>France</li>
</country>
<region><li>Grand Est</li>
<li>Lorraine (région)</li>
</region>
<settlement><li>Metz</li>
<li>Nancy</li>
</settlement>
<orgName><li>Centre national de la recherche scientifique</li>
<li>Laboratoire réactions et génie des procédés</li>
<li>Université de Lorraine</li>
</orgName>
</list>
<tree><country name="Espagne"><noRegion><name sortKey="Jimenez Izquierdo, C" sort="Jimenez Izquierdo, C" uniqKey="Jimenez Izquierdo C" first="C." last="Jimenez Izquierdo">C. Jimenez Izquierdo</name>
</noRegion>
<name sortKey="Canizares, P" sort="Canizares, P" uniqKey="Canizares P" first="P." last="Canizares">P. Canizares</name>
<name sortKey="Rodrigo, M A" sort="Rodrigo, M A" uniqKey="Rodrigo M" first="M. A." last="Rodrigo">M. A. Rodrigo</name>
</country>
<country name="France"><region name="Grand Est"><name sortKey="Leclerc, J P" sort="Leclerc, J P" uniqKey="Leclerc J" first="J.-P." last="Leclerc">J.-P. Leclerc</name>
</region>
<name sortKey="Lapicque, F" sort="Lapicque, F" uniqKey="Lapicque F" first="F." last="Lapicque">François Lapicque</name>
<name sortKey="Valentin, G" sort="Valentin, G" uniqKey="Valentin G" first="G." last="Valentin">G. Valentin</name>
</country>
</tree>
</affiliations>
</record>
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