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Critical agitation for microcarrier suspension in orbital shaken bioreactors : Experimental study and dimensional analysis

Identifieur interne : 000427 ( Main/Exploration ); précédent : 000426; suivant : 000428

Critical agitation for microcarrier suspension in orbital shaken bioreactors : Experimental study and dimensional analysis

Auteurs : Eric Olmos [France] ; Karine Loubiere [France] ; Céline Martin [France] ; Guillaume Delaplace [France] ; Annie Marc [France]

Source :

RBID : Hal:hal-01107247

English descriptors

Abstract

Orbital shaken bioreactors are widely used at the laboratory scale for the culture of animal cells in suspension mode. In the case of adherent-dependent cell lines,the choice of agitation conditions at which all particles are just-suspended (or attain complete suspension) has often to be determined.Indeed, with orbital shaken bioreactors,this choice results from the combination of two parameters : the orbital diameter and the agitation rate. That is why an experimental protocol for the determination of critical agitation conditions for microcarrier complete suspension has been developed in this paper.It consisted in a side-view visualization of blue-stained particles in shaken Erlenmeyer flasks and cylindrical flasks. 220 experiments representative of animal cell culture conditions have been carried out to study the effect of various operating conditions (bioreactor size and geometry, particle type, density and diameter,liquid viscosity, shaking diameter, filling ratio). Furthermore, a dimensional analysis has been performed, leading to a correlation relating a Froude number (in which the critical agitation Nc for complete particle suspension is sembedded) to four other dimensionless numbers. Then,the critical agitation conditions determined in this paper were analyzed and discussed with respect to the data available in the literature on the flow structure occurring inside the flask.Our findings revealed that high orbital shaking diameters and large cylindrical vessels should be promoted to get microcarriers into suspension at a minimized power dissipation per unit of volume.

Url:
DOI: 10.1016/j.ces.2014.08.063


Affiliations:


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Le document en format XML

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<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.ces.2014.08.063</idno>
<series>
<title level="j">Chemical Engineering Science</title>
<idno type="ISSN">0009-2509</idno>
<imprint>
<date type="datePub">2014</date>
</imprint>
</series>
</biblStruct>
</sourceDesc>
</fileDesc>
<profileDesc>
<textClass>
<keywords scheme="mix" xml:lang="en">
<term>Dimensional analysis</term>
<term>Experimental determination</term>
<term>Microcarrier suspension</term>
<term>Shaken flasks</term>
</keywords>
</textClass>
</profileDesc>
</teiHeader>
<front>
<div type="abstract" xml:lang="en">Orbital shaken bioreactors are widely used at the laboratory scale for the culture of animal cells in suspension mode. In the case of adherent-dependent cell lines,the choice of agitation conditions at which all particles are just-suspended (or attain complete suspension) has often to be determined.Indeed, with orbital shaken bioreactors,this choice results from the combination of two parameters : the orbital diameter and the agitation rate. That is why an experimental protocol for the determination of critical agitation conditions for microcarrier complete suspension has been developed in this paper.It consisted in a side-view visualization of blue-stained particles in shaken Erlenmeyer flasks and cylindrical flasks. 220 experiments representative of animal cell culture conditions have been carried out to study the effect of various operating conditions (bioreactor size and geometry, particle type, density and diameter,liquid viscosity, shaking diameter, filling ratio). Furthermore, a dimensional analysis has been performed, leading to a correlation relating a Froude number (in which the critical agitation Nc for complete particle suspension is sembedded) to four other dimensionless numbers. Then,the critical agitation conditions determined in this paper were analyzed and discussed with respect to the data available in the literature on the flow structure occurring inside the flask.Our findings revealed that high orbital shaking diameters and large cylindrical vessels should be promoted to get microcarriers into suspension at a minimized power dissipation per unit of volume.</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>Université de Lorraine</li>
</orgName>
</list>
<tree>
<country name="France">
<region name="Grand Est">
<name sortKey="Olmos, Eric" sort="Olmos, Eric" uniqKey="Olmos E" first="Eric" last="Olmos">Eric Olmos</name>
</region>
<name sortKey="Delaplace, Guillaume" sort="Delaplace, Guillaume" uniqKey="Delaplace G" first="Guillaume" last="Delaplace">Guillaume Delaplace</name>
<name sortKey="Loubiere, Karine" sort="Loubiere, Karine" uniqKey="Loubiere K" first="Karine" last="Loubiere">Karine Loubiere</name>
<name sortKey="Marc, Annie" sort="Marc, Annie" uniqKey="Marc A" first="Annie" last="Marc">Annie Marc</name>
<name sortKey="Martin, Celine" sort="Martin, Celine" uniqKey="Martin C" first="Céline" last="Martin">Céline Martin</name>
</country>
</tree>
</affiliations>
</record>

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