Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/83832
Registo completo
Campo DC | Valor | Idioma |
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dc.contributor.author | Almeida, F. | por |
dc.contributor.author | Rocha, F. | por |
dc.contributor.author | Teixeira, J. A. | por |
dc.contributor.author | Ferreira, A. | por |
dc.date.accessioned | 2023-04-06T10:55:38Z | - |
dc.date.available | 2023-04-06T10:55:38Z | - |
dc.date.issued | 2023-05 | - |
dc.identifier.citation | Almeida, F.; Rocha, F.; Teixeira, José A.; Ferreira, A., Hydrodynamics and gas-liquid mass transfer in an oscillatory flow reactor: influence of liquid properties. Chemical Engineering Research & Design, 193, 179-197, 2023 | por |
dc.identifier.issn | 0263-8762 | por |
dc.identifier.uri | https://hdl.handle.net/1822/83832 | - |
dc.description | Available online 20 March 2023 | por |
dc.description.abstract | Liquid properties, such as, surface tension and viscosity are important parameters as they control gas-liquid mass transfer in bioprocesses. An oscillatory flow reactor provided with smooth periodic constrictions (OFR-SPC) was considered to evaluate its potential for mass transfer performance in non-pure gas-liquid systems. The effect of surface tension and viscosity on the volumetric (kLa) and liquid-side mass transfer coefficients (kL), interfacial area, (a), gas holdup (G) and bubbles dynamics were investigated under different operational conditions (oscillation amplitude (x0) and frequency (f) and superficial gas velocity (ug)). Two liquid phases, ethanol and sucrose aqueous solutions covering a range of surface tension and viscosity values were used. For the bubble size distribution (BSD) measurements an image analysis technique was used. A Design of Experiment (DoE) methodology was implemented in this work to establish the relation of x0, f, ug, surface tension and viscosity with kLa. According to the results, changes in the liquid properties and operational conditions showed marked effects on bubbles size and mass transfer. However, surface tension and viscosity had no significant influence on G, contrary to the reported for common contactors, where G increased in the presence of ethanol and decreased at moderate/high viscosities. Moreover, it was found that increasing the oscillatory movement notably improved kL, and kLa (2 to 6-fold), either in ethanol or sucrose solutions, compared to common reactors, even with moderate power consumption (~105 W m-3). This improvement resulted from the bubbles breakage, which originates bubbles with small and approximately the same size (homogeneous regime) enhancing a, instead, lower oscillations resulted in large bubbles (heterogeneous regime). The results demonstrate that the OFR-SPC can ensure outstanding mass transfer rates, with potential and feasibility for use in gas-liquid bioprocesses, where mass transfer and liquid properties are important. | por |
dc.description.sponsorship | This work was financially supported by: I) Project PTDC/QEQ-PRS/3787/2014 -POCI-01–0145-FEDER-016816 - funded by the European Regional Development Fund (ERDF) through COMPETE2020 -Programa Operacional Competitividade e Internacionalização (POCI) and by national funds through Fundaç ão para a Ciência e a Tecnologia.I.P. (FCT) - Project 9471 - Reforçar a Investigaç ão,o Desenvolvimento Tecnológico e a Inovaç ão; II) IF exploratory Project [IF/01087/2014] funded by FCT; III) LA/P/0045/2020 (ALiCE), UIDB/00511/2020 and UIDP/00511/2020 (LEPABE), funded by national funds through FCT/MCTES (PIDDAC); IV) the FCT under the scope of the strategic funding of UIDB/04469/2020 unit, and by LABBELS – Associate Laboratory in Biotechnology, Bioengineering and Microelectromechnaical Systems, LA/P/0029/2020. A. Ferreira is an Investigador FCT. F. Almeida would wish to thank to FCT for PhD scholarship 2020.05246. BD. | por |
dc.language.iso | eng | por |
dc.publisher | Elsevier 1 | por |
dc.relation | info:eu-repo/grantAgreement/FCT/9471 - RIDTI/PTDC%2FQEQ-PRS%2F3787%2F2014/PT | por |
dc.relation | info:eu-repo/grantAgreement/FCT/Investigador FCT/IF%2F01087%2F2014%2FCP1249%2FCT0001/PT | por |
dc.relation | 0 | por |
dc.relation | info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00511%2F2020/PT | por |
dc.relation | info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F00511%2F2020/PT | por |
dc.rights | openAccess | por |
dc.subject | Oscillatory flow reactor | por |
dc.subject | Gas-liquid mass transfer | por |
dc.subject | Gas holdup | por |
dc.subject | Sauter mean diameter | por |
dc.subject | Design of experiments (DoE) | por |
dc.subject | Multiphase reactors | por |
dc.title | Hydrodynamics and gas-liquid mass transfer in an oscillatory flow reactor: influence of liquid properties | por |
dc.type | article | - |
dc.peerreviewed | yes | por |
dc.relation.publisherversion | http://www.journals.elsevier.com/chemical-engineering-research-and-design/ | por |
dc.comments | CEB56124 | por |
oaire.citationStartPage | 179 | por |
oaire.citationEndPage | 197 | por |
oaire.citationConferencePlace | United Kingdom | - |
oaire.citationVolume | 193 | por |
dc.date.updated | 2023-04-03T14:43:09Z | - |
dc.identifier.doi | 10.1016/j.cherd.2023.03.030 | por |
dc.description.publicationversion | info:eu-repo/semantics/publishedVersion | - |
dc.subject.wos | Science & Technology | por |
sdum.journal | Chemical Engineering Research & Design | por |
oaire.version | P | - |
Aparece nas coleções: | CEB - Publicações em Revistas/Séries Internacionais / Publications in International Journals/Series |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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document_56124_1.pdf | 1,85 MB | Adobe PDF | Ver/Abrir |