Mass transfer measurements and modeling in a microchannel photocatalytic reactor
Identifieur interne : 000363 ( Main/Exploration ); précédent : 000362; suivant : 000364Mass transfer measurements and modeling in a microchannel photocatalytic reactor
Auteurs : Serge Corbel [France] ; Nidhal Becheikh [France] ; Thibault Roques-Carmes [France] ; Orfan Zahraa [France]Source :
- Chemical Engineering Research and Design [ 0263-8762 ] ; 2014-04-10.
Descripteurs français
- Wicri :
- topic : Simulation.
English descriptors
- mix :
Abstract
The main objective of this paper was to evaluate the influence of mass transfer on the photocatalytic efficiency at a low flow rate in the order of several mL per hour. Several continuous flow microchannel reactors have been used to study the degradation of salicylic acid (SA) taken as a model pollutant. The photocatalytic degradation of salicylic acid, under UV illumination of 1.5 mW cm−2, was assessed from the outlet concentration measured by liquid chromatography HPLC. It was shown that the degradation of SA by UV was limited by mass transfer. Numerical simulations have allowed establishing a relationship of the Sherwood number valuable for all the microchannel geometries. Computational fluid dynamics with Comsol Multiphysics is useful for predicting the degradation yield for a given geometry of the microreactor. The best representation of the experimental data is obtained by introducing a kinetic law taking into account mass transfer limitation.
Url:
DOI: 10.1016/j.cherd.2013.10.011
Affiliations:
- France
- Grand Est, Lorraine (région)
- Metz, Nancy
- Centre national de la recherche scientifique, Laboratoire réactions et génie des procédés, Université de Lorraine
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Le document en format XML
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ENSIC, 1 rue de Grandville BP 20451, 54001 Nancy Cedex</addrLine><country key="FR"></country></address><ref type="url">http://lrgp.univ-lorraine.fr/</ref></desc><listRelation><relation active="#struct-413289" type="direct"></relation><relation name="UMR7274" active="#struct-441569" type="direct"></relation></listRelation><tutelles><tutelle active="#struct-413289" type="direct"><org type="institution" xml:id="struct-413289" status="VALID"><idno type="IdRef">157040569</idno><idno type="IdUnivLorraine">[UL]100--</idno><orgName>Université de Lorraine</orgName><orgName type="acronym">UL</orgName><date type="start">2012-01-01</date><desc><address><addrLine>34 cours Léopold - CS 25233 - 54052 Nancy cedex</addrLine><country key="FR"></country></address><ref type="url">http://www.univ-lorraine.fr/</ref></desc></org></tutelle><tutelle name="UMR7274" active="#struct-441569" type="direct"><org type="institution" xml:id="struct-441569" status="VALID"><idno type="ISNI">0000000122597504</idno><idno type="IdRef">02636817X</idno><orgName>Centre National de la Recherche Scientifique</orgName><orgName type="acronym">CNRS</orgName><date type="start">1939-10-19</date><desc><address><country key="FR"></country></address><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></affiliation></author></analytic><idno type="DOI">10.1016/j.cherd.2013.10.011</idno><series><title level="j">Chemical Engineering Research and Design</title><idno type="ISSN">0263-8762</idno><imprint><date type="datePub">2014-04-10</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="mix" xml:lang="en"><term>Continuous-flow</term><term>Kinetic modeling</term><term>Mass transfer</term><term>Microreactor</term><term>Microstructuration</term><term>Photocatalysis</term><term>Simulation</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Simulation</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The main objective of this paper was to evaluate the influence of mass transfer on the photocatalytic efficiency at a low flow rate in the order of several mL per hour. Several continuous flow microchannel reactors have been used to study the degradation of salicylic acid (SA) taken as a model pollutant. The photocatalytic degradation of salicylic acid, under UV illumination of 1.5 mW cm−2, was assessed from the outlet concentration measured by liquid chromatography HPLC. It was shown that the degradation of SA by UV was limited by mass transfer. Numerical simulations have allowed establishing a relationship of the Sherwood number valuable for all the microchannel geometries. Computational fluid dynamics with Comsol Multiphysics is useful for predicting the degradation yield for a given geometry of the microreactor. The best representation of the experimental data is obtained by introducing a kinetic law taking into account mass transfer limitation.</div></front></TEI><affiliations><list><country><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="France"><region name="Grand Est"><name sortKey="Corbel, Serge" sort="Corbel, Serge" uniqKey="Corbel S" first="Serge" last="Corbel">Serge Corbel</name></region><name sortKey="Becheikh, Nidhal" sort="Becheikh, Nidhal" uniqKey="Becheikh N" first="Nidhal" last="Becheikh">Nidhal Becheikh</name><name sortKey="Roques Carmes, Thibault" sort="Roques Carmes, Thibault" uniqKey="Roques Carmes T" first="Thibault" last="Roques-Carmes">Thibault Roques-Carmes</name><name sortKey="Zahraa, Orfan" sort="Zahraa, Orfan" uniqKey="Zahraa O" first="Orfan" last="Zahraa">Orfan Zahraa</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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