Using Oxygen Gas Transfer Coefficients to Predict Carbon Dioxide Removal

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dc.contributor.authorAitchison, T. F.en
dc.contributor.authorTimmons, M. B.en
dc.contributor.authorBisogni, J. J. Jr.en
dc.contributor.authorPiedrahita, R. H.en
dc.contributor.authorVinci, B. J.en
dc.contributor.editorSmith, Stephen Allenen
dc.date.accessioned2019-06-25T16:55:26Zen
dc.date.available2019-06-25T16:55:26Zen
dc.date.issued2007-06-01en
dc.description.abstractThe purpose of this research was to determine if oxygen gas transfer coefficients, as reflected by overall mass transfer coefficient (KLa) values, could be used to predict carbon dioxide (CO2) removal by degassing in aquaculture production systems. The motivation for this approach was that while there is ample literature related to oxygen gas transfer, there is limited information on CO2 removal. A series of tests was conducted to determine the ratio (φE) of KLa for CO2 to that of oxygen for two commonly used surface aerators and then compare φE to the theoretical 22 International Journal of Recirculating Aquaculture, Volume 8, June 2007 ratio, φT, which is 0.90 based upon gas molecular diameters. Experiments were conducted in a 10,000 L circular tank aerated by means of two different surface agitators. The two aerators were selected to represent aeration patterns with high and moderate water to gas interface exposures or breakup patterns (photos supplied, Figures 2 and 3). The results showed that φE/φT ratios were 96% (for high air exposure) and 74% (for moderate air exposure) for water with an alkalinity of ~130 mg/L as CaCO3. The φE/φT ratio decreased to 0.84 and 0.51 for the high and moderate air exposures, respectively, when higher alkalinity waters (~1,000 mg/L as CaCO3) were used.en
dc.format.extent22 pagesen
dc.format.extent1.29 MBen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationAitchison, T.F., Timmons, M.B., Bisogni Jr., J.J., Piedrahita, R.H. and Vinci, B.J., 2007. Using Oxygen Gas Transfer Coefficients to Predict Carbon Dioxide Removal. International Journal of Recirculating Aquaculture, 8(1). DOI: http://doi.org/10.21061/ijra.v8i1.1416en
dc.identifier.doihttps://doi.org/10.21061/ijra.v8i1.1416en
dc.identifier.eissn2572-9160en
dc.identifier.issn1547-917Xen
dc.identifier.issue1en
dc.identifier.urihttp://hdl.handle.net/10919/90619en
dc.identifier.volume8en
dc.language.isoenen
dc.publisherCommercial Fish and Shellfish Technologies Program, Virginia Techen
dc.rightsIn Copyrighten
dc.rights.holderCommercial Fish and Shellfish Technologies Program, Virginia Techen
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectAeratoren
dc.subjectRecirculating Aquacultureen
dc.titleUsing Oxygen Gas Transfer Coefficients to Predict Carbon Dioxide Removalen
dc.title.serialInternational Journal of Recirculating Aquacultureen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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