In situ characterization of local hydrodynamic parameters in closed-loop aeration tanks
The objective of this experimental study was to collect and to interpret data in order to better understand the oxygen mass transfer phenomena occurring in full-scale aeration tanks equipped with fine bubble diffusers and slow speed mixers (inducing horizontal liquid flows). Bubble size, local depth...
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| Veröffentlicht in: | Chemical engineering journal (Lausanne, Switzerland : 1996) Switzerland : 1996), 2010-04, Vol.158 (2), p.207-212 |
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| container_title | Chemical engineering journal (Lausanne, Switzerland : 1996) |
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| creator | Fayolle, Yannick Gillot, Sylvie Cockx, Arnaud Bensimhon, Laetitia Roustan, Michel Heduit, Alain |
| description | The objective of this experimental study was to collect and to interpret data in order to better understand the oxygen mass transfer phenomena occurring in full-scale aeration tanks equipped with fine bubble diffusers and slow speed mixers (inducing horizontal liquid flows). Bubble size, local depth and oxygen mass transfer coefficient were measured
in situ for a given air flow rate (1555
N
m
3
h
−1) and for two different axial liquid velocities. The increase in the global oxygen transfer coefficient is of 29% when the mean axial liquid velocity varies from 0 to 0.42
m
s
−1. The small influence of the liquid velocity on the local bubble Sauter diameter (about −4%) cannot explain the increase in
k
L
a
20. This increase in
k
L
a
20 with the axial liquid velocity is mainly due to the attenuation of the vertical liquid circulation induced by the gas injection. |
| doi_str_mv | 10.1016/j.cej.2009.12.043 |
| format | Article |
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in situ for a given air flow rate (1555
N
m
3
h
−1) and for two different axial liquid velocities. The increase in the global oxygen transfer coefficient is of 29% when the mean axial liquid velocity varies from 0 to 0.42
m
s
−1. The small influence of the liquid velocity on the local bubble Sauter diameter (about −4%) cannot explain the increase in
k
L
a
20. This increase in
k
L
a
20 with the axial liquid velocity is mainly due to the attenuation of the vertical liquid circulation induced by the gas injection.</description><identifier>ISSN: 1385-8947</identifier><identifier>EISSN: 1873-3212</identifier><identifier>DOI: 10.1016/j.cej.2009.12.043</identifier><language>eng</language><publisher>Oxford: Elsevier B.V</publisher><subject>Aeration ; Aeration tanks ; Applied sciences ; Attenuation ; Bubble size ; Bubbles ; Chemical engineering ; Coefficients ; Environmental Sciences ; Exact sciences and technology ; Fluid dynamics ; Gas hold-up ; General purification processes ; Heat and mass transfer. Packings, plates ; Horizontal flow systems ; Hydrodynamics of contact apparatus ; Liquids ; Mass transfer ; Pollution ; Wastewater treatment ; Wastewaters ; Water treatment and pollution</subject><ispartof>Chemical engineering journal (Lausanne, Switzerland : 1996), 2010-04, Vol.158 (2), p.207-212</ispartof><rights>2010 Elsevier B.V.</rights><rights>2015 INIST-CNRS</rights><rights>Distributed under a Creative Commons Attribution 4.0 International License</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c393t-e4bd560bc7bc03027aad7ddabf07f13a6c87369d038ca11780a3dff61f86847e3</citedby><orcidid>0000-0002-9152-8710 ; 0000-0002-2435-7667</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S1385894710000021$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>230,314,776,780,881,3537,27903,27904,65308</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=22565417$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://hal.inrae.fr/hal-02594171$$DView record in HAL$$Hfree_for_read</backlink></links><search><creatorcontrib>Fayolle, Yannick</creatorcontrib><creatorcontrib>Gillot, Sylvie</creatorcontrib><creatorcontrib>Cockx, Arnaud</creatorcontrib><creatorcontrib>Bensimhon, Laetitia</creatorcontrib><creatorcontrib>Roustan, Michel</creatorcontrib><creatorcontrib>Heduit, Alain</creatorcontrib><title>In situ characterization of local hydrodynamic parameters in closed-loop aeration tanks</title><title>Chemical engineering journal (Lausanne, Switzerland : 1996)</title><description>The objective of this experimental study was to collect and to interpret data in order to better understand the oxygen mass transfer phenomena occurring in full-scale aeration tanks equipped with fine bubble diffusers and slow speed mixers (inducing horizontal liquid flows). Bubble size, local depth and oxygen mass transfer coefficient were measured
in situ for a given air flow rate (1555
N
m
3
h
−1) and for two different axial liquid velocities. The increase in the global oxygen transfer coefficient is of 29% when the mean axial liquid velocity varies from 0 to 0.42
m
s
−1. The small influence of the liquid velocity on the local bubble Sauter diameter (about −4%) cannot explain the increase in
k
L
a
20. This increase in
k
L
a
20 with the axial liquid velocity is mainly due to the attenuation of the vertical liquid circulation induced by the gas injection.</description><subject>Aeration</subject><subject>Aeration tanks</subject><subject>Applied sciences</subject><subject>Attenuation</subject><subject>Bubble size</subject><subject>Bubbles</subject><subject>Chemical engineering</subject><subject>Coefficients</subject><subject>Environmental Sciences</subject><subject>Exact sciences and technology</subject><subject>Fluid dynamics</subject><subject>Gas hold-up</subject><subject>General purification processes</subject><subject>Heat and mass transfer. Packings, plates</subject><subject>Horizontal flow systems</subject><subject>Hydrodynamics of contact apparatus</subject><subject>Liquids</subject><subject>Mass transfer</subject><subject>Pollution</subject><subject>Wastewater treatment</subject><subject>Wastewaters</subject><subject>Water treatment and pollution</subject><issn>1385-8947</issn><issn>1873-3212</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2010</creationdate><recordtype>article</recordtype><recordid>eNp9kMFq3DAQhk1JoUnaB-hNlxJysKORbMmmpxDSJLCQS0uPYnYksdp6ra3kDWyfvloccsxJg_j-f6Svqr4Cb4CDutk25LaN4HxoQDS8lR-qc-i1rKUAcVZm2Xd1P7T6U3WR85ZzrgYYzqvfTxPLYT4w2mBCml0K_3AOcWLRszESjmxztCna44S7QGxfqJ0rWGZhYjTG7Gw9xrhn6NISnHH6kz9XHz2O2X15PS-rXz_uf9491qvnh6e721VNcpBz7dq17RRfk14Tl1xoRKutxbXn2oNEReUParBc9oQAuucorfcKfK_6Vjt5WV0vvRsczT6FHaajiRjM4-3KnO646IYWNLxAYa8Wdp_i34PLs9mFTG4ccXLxkI3upJY9KF5IWEhKMefk_Fs1cHPybbam-DYn3waEKb5L5ttrO-aizSecKOS3oBCd6spDCvd94VzR8hJcMpmCm8jZkBzNxsbwzpb_-QiVtg</recordid><startdate>20100401</startdate><enddate>20100401</enddate><creator>Fayolle, Yannick</creator><creator>Gillot, Sylvie</creator><creator>Cockx, Arnaud</creator><creator>Bensimhon, Laetitia</creator><creator>Roustan, Michel</creator><creator>Heduit, Alain</creator><general>Elsevier B.V</general><general>Elsevier</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8FD</scope><scope>JG9</scope><scope>1XC</scope><orcidid>https://orcid.org/0000-0002-9152-8710</orcidid><orcidid>https://orcid.org/0000-0002-2435-7667</orcidid></search><sort><creationdate>20100401</creationdate><title>In situ characterization of local hydrodynamic parameters in closed-loop aeration tanks</title><author>Fayolle, Yannick ; Gillot, Sylvie ; Cockx, Arnaud ; Bensimhon, Laetitia ; Roustan, Michel ; Heduit, Alain</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c393t-e4bd560bc7bc03027aad7ddabf07f13a6c87369d038ca11780a3dff61f86847e3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2010</creationdate><topic>Aeration</topic><topic>Aeration tanks</topic><topic>Applied sciences</topic><topic>Attenuation</topic><topic>Bubble size</topic><topic>Bubbles</topic><topic>Chemical engineering</topic><topic>Coefficients</topic><topic>Environmental Sciences</topic><topic>Exact sciences and technology</topic><topic>Fluid dynamics</topic><topic>Gas hold-up</topic><topic>General purification processes</topic><topic>Heat and mass transfer. Packings, plates</topic><topic>Horizontal flow systems</topic><topic>Hydrodynamics of contact apparatus</topic><topic>Liquids</topic><topic>Mass transfer</topic><topic>Pollution</topic><topic>Wastewater treatment</topic><topic>Wastewaters</topic><topic>Water treatment and pollution</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Fayolle, Yannick</creatorcontrib><creatorcontrib>Gillot, Sylvie</creatorcontrib><creatorcontrib>Cockx, Arnaud</creatorcontrib><creatorcontrib>Bensimhon, Laetitia</creatorcontrib><creatorcontrib>Roustan, Michel</creatorcontrib><creatorcontrib>Heduit, Alain</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><collection>Hyper Article en Ligne (HAL)</collection><jtitle>Chemical engineering journal (Lausanne, Switzerland : 1996)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Fayolle, Yannick</au><au>Gillot, Sylvie</au><au>Cockx, Arnaud</au><au>Bensimhon, Laetitia</au><au>Roustan, Michel</au><au>Heduit, Alain</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>In situ characterization of local hydrodynamic parameters in closed-loop aeration tanks</atitle><jtitle>Chemical engineering journal (Lausanne, Switzerland : 1996)</jtitle><date>2010-04-01</date><risdate>2010</risdate><volume>158</volume><issue>2</issue><spage>207</spage><epage>212</epage><pages>207-212</pages><issn>1385-8947</issn><eissn>1873-3212</eissn><abstract>The objective of this experimental study was to collect and to interpret data in order to better understand the oxygen mass transfer phenomena occurring in full-scale aeration tanks equipped with fine bubble diffusers and slow speed mixers (inducing horizontal liquid flows). Bubble size, local depth and oxygen mass transfer coefficient were measured
in situ for a given air flow rate (1555
N
m
3
h
−1) and for two different axial liquid velocities. The increase in the global oxygen transfer coefficient is of 29% when the mean axial liquid velocity varies from 0 to 0.42
m
s
−1. The small influence of the liquid velocity on the local bubble Sauter diameter (about −4%) cannot explain the increase in
k
L
a
20. This increase in
k
L
a
20 with the axial liquid velocity is mainly due to the attenuation of the vertical liquid circulation induced by the gas injection.</abstract><cop>Oxford</cop><pub>Elsevier B.V</pub><doi>10.1016/j.cej.2009.12.043</doi><tpages>6</tpages><orcidid>https://orcid.org/0000-0002-9152-8710</orcidid><orcidid>https://orcid.org/0000-0002-2435-7667</orcidid></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 1385-8947 |
| ispartof | Chemical engineering journal (Lausanne, Switzerland : 1996), 2010-04, Vol.158 (2), p.207-212 |
| issn | 1385-8947 1873-3212 |
| language | eng |
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| source | Elsevier ScienceDirect Journals |
| subjects | Aeration Aeration tanks Applied sciences Attenuation Bubble size Bubbles Chemical engineering Coefficients Environmental Sciences Exact sciences and technology Fluid dynamics Gas hold-up General purification processes Heat and mass transfer. Packings, plates Horizontal flow systems Hydrodynamics of contact apparatus Liquids Mass transfer Pollution Wastewater treatment Wastewaters Water treatment and pollution |
| title | In situ characterization of local hydrodynamic parameters in closed-loop aeration tanks |
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