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Local volumetric mass transfer coefficients in sections of multiple-impeller stirred tank reactors: Data analysis. Chem Eng Res Des 2023. [DOI: 10.1016/j.cherd.2023.01.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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2
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Mollinedo H, Mendoza-Escamilla VX, Rivadeneyra-Romero G, Gonzalez-Neria I, Yañez-Varela JA, Alonzo-Garcia A, Lugo-Hinojosa J, Martínez-Delgadillo SA. Power Consumption and Energy Dissipation Rate Reduction in Agitated Tanks by Control Rods Attached to a Pitched Blade Impeller. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c01623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Helvio Mollinedo
- Instituto Politécnico Nacional, UPIITA, Depto. Ingeniería, Av. IPN 2580, Col. La Laguna Ticomán, C.P. 07340 Mexico City, Mexico
| | - Victor X. Mendoza-Escamilla
- Universidad Autónoma Metropolitana. Av. San Pablo 180, Col. Reynosa Tamaulipas, C.P. 02200 Mexico City, Mexico
| | - Gabriela Rivadeneyra-Romero
- Petroleum Engineering Department, Universidad del Istmo, University City, S/N, Tehuantepec Oaxaca C.P. 70760, Mexico
| | - Israel Gonzalez-Neria
- Universidad Autónoma Metropolitana. Av. San Pablo 180, Col. Reynosa Tamaulipas, C.P. 02200 Mexico City, Mexico
| | | | - Alejandro Alonzo-Garcia
- CONACyT-Tecnológico Nacional de México/Instituto Tecnológico de Nuevo León-Centro de Investigación e Innovación Tecnológica, Av. de la Alianza No. 507, Apodaca, Nuevo León CP 66629, Mexico
| | - Jesús Lugo-Hinojosa
- Universidad Autónoma Metropolitana. Av. San Pablo 180, Col. Reynosa Tamaulipas, C.P. 02200 Mexico City, Mexico
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Investigation of Low-Frequency Phenomena within Flow Pattern in Standard Mixing Vessel Induced by Pitched Blade Impeller. Processes (Basel) 2021. [DOI: 10.3390/pr9030545] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
An experimental study on the flow pattern dynamics in a standard mixing vessel with radial baffles filled with water and induced by a pitched blade impeller pumping downward is presented. Investigation is mainly focused on detection and analysis of quasi-periodical or periodical low-frequency phenomenon connected with time- and length-scales considerably exceeding the Blade Passage Frequency (hereinafter BPF) and common turbulent eddies. This phenomenon, which is expressed as large-scale mean-flow variations, is generally known as flow Macro-Instability (hereinafter MI). It could break-down just below the liquid surface, or it crashes to the liquid surface and causes its Macro-Swelling (hereinafter MS). Our investigation was based on classical two-dimensional (2D) Particle Image Velocimetry (hereinafter PIV) measurement within 3 selected vertical planes in the vessel and subsequent analysis of the velocity field. The dominant frequencies evaluated in the selected points and overall analysis of the quasi-periodical macro-flow pattern behavior is to be shown. Identification of the quasi-periodical substructures appeared within the flow pattern was performed using the Oscillation Pattern Decomposition (hereinafter OPD) method. Observation of the macro-flow patterns confirmed presence of the macro-flow structures detected within flow pattern at the identical mixing pilot plant setup by previous investigations of the MIs phenomenon, i.e., the primary circulation loop and strong impeller discharge jet located in the lower vessel segment and the strong ascending wall current at the baffle, which break-down below the surface very often. A further important contribution of the presented work is the investigation of both flow pattern within the baffles vicinity and in the middle of the sector far from the baffle, showing a significant difference. Low-frequency periodical (or quasi-periodical) behavior of the investigated macro-structures was qualitatively confirmed by the presented results and it was quantified using the velocity dominant frequencies evaluation, as noted below. This frequency analysis brings insight into the supposed and detected interconnections between dynamics of the adjacent flow structures. Detected different flow patterns within the main plane near the baffles and in the inclined plane reveal a strong influence of the baffle presence to the local vertical flow, especially within the upper part of the vessel. Quite a different flow pattern appears tangentially in front of and behind the baffle, where a wake is revealed, indicating significant influence of the baffle on the local tangential flow. The new findings represent a contribution to better understanding the physical phenomena behind the standard mixing process.
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Holguín-Salas A, Corkidi G, Galindo E. Local bubble size distribution in a pilot scale stirred tank containing a mycelial (three phases) dispersion as a function of constant retrofitted gassed power input. Biochem Eng J 2020. [DOI: 10.1016/j.bej.2020.107614] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Carletti C, Bikić S, Montante G, Paglianti A. Mass Transfer in Dilute Solid–Liquid Stirred Tanks. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.7b04730] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Claudio Carletti
- Dipartimento di Chimica Industriale “Toso Montanari”, Alma Mater Studiorum, Università di Bologna, via Terracini 34, 40131 Bologna, Italy
| | - Siniša Bikić
- Faculty of Technical Sciences, University of Novi Sad, Novi Sad, Serbia
| | - Giuseppina Montante
- Dipartimento di Chimica Industriale “Toso Montanari”, Alma Mater Studiorum, Università di Bologna, via Terracini 34, 40131 Bologna, Italy
| | - Alessandro Paglianti
- Dipartimento di Ingegneria Civile, Chimica, Ambientale e dei Materiali, Alma Mater Studiorum, Università di Bologna, via Terracini 34, 40131 Bologna, Italy
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Komrakova A, Liu Z, Machado M, Kresta S. Development of a zone flow model for the confined impeller stirred tank (CIST) based on mean velocity and turbulence measurements. Chem Eng Res Des 2017. [DOI: 10.1016/j.cherd.2017.07.025] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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7
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Bashiri H, Alizadeh E, Bertrand F, Chaouki J. Investigation of turbulent fluid flows in stirred tanks using a non-intrusive particle tracking technique. Chem Eng Sci 2016. [DOI: 10.1016/j.ces.2015.10.005] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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8
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Rane CV, Ekambara K, Joshi JB, Ramkrishna D. Effect of impeller design and power consumption on crystal size distribution. AIChE J 2014. [DOI: 10.1002/aic.14541] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Chinmay V. Rane
- Dept. of Chemical Engineering; Inst. of Chemical Technology; Matunga Mumbai Maharashtra 400 019 India
| | - Kalekudithi Ekambara
- Dept. of Chemical Engineering; Inst. of Chemical Technology; Matunga Mumbai Maharashtra 400 019 India
- Techno Force Solution (I) Pvt Ltd.; D-33 MIDC Nashik Maharashtra 422 010 India
| | - Jyeshtharaj B. Joshi
- Dept. of Chemical Engineering; Inst. of Chemical Technology; Matunga Mumbai Maharashtra 400 019 India
- Homi Bhabha National Inst.; Anushaktinagar Mumbai Maharashtra 400 094 India
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Odeleye AOO, Marsh DTJ, Osborne MD, Lye GJ, Micheletti M. On the fluid dynamics of a laboratory scale single-use stirred bioreactor. Chem Eng Sci 2014; 111:299-312. [PMID: 24864128 PMCID: PMC4015722 DOI: 10.1016/j.ces.2014.02.032] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2013] [Revised: 02/07/2014] [Accepted: 02/21/2014] [Indexed: 10/31/2022]
Abstract
The commercial success of mammalian cell-derived recombinant proteins has fostered an increase in demand for novel single-use bioreactor (SUB) systems that facilitate greater productivity, increased flexibility and reduced costs (Zhang et al., 2010). These systems exhibit fluid flow regimes unlike those encountered in traditional glass/stainless steel bioreactors because of the way in which they are designed. With such disparate hydrodynamic environments between SUBs currently on the market, traditional scale-up approaches applied to stirred tanks should be revised. One such SUB is the Mobius® 3 L CellReady, which consists of an upward-pumping marine scoping impeller. This work represents the first experimental study of the flow within the CellReady using a Particle Image Velocimetry (PIV) approach, combined with a biological study into the impact of these fluid dynamic characteristics on cell culture performance. The PIV study was conducted within the actual vessel, rather than using a purpose-built mimic. PIV measurements conveyed a degree of fluid compartmentalisation resulting from the up-pumping impeller. Both impeller tip speed and fluid working volume had an impact upon the fluid velocities and spatial distribution of turbulence within the vessel. Cell cultures were conducted using the GS-CHO cell-line (Lonza) producing an IgG4 antibody. Disparity in cellular growth and viability throughout the range of operating conditions used (80-350 rpm and 1-2.4 L working volume) was not substantial, although a significant reduction in recombinant protein productivity was found at 350 rpm and 1 L working volume (corresponding to the highest Reynolds number tested in this work). The study shows promise in the use of PIV to improve understanding of the hydrodynamic environment within individual SUBs and allows identification of the critical hydrodynamic parameters under the different flow regimes for compatibility and scalability across the range of bioreactor platforms.
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Affiliation(s)
- A O O Odeleye
- Department of Biochemical Engineering, University College London, Torrington Place, London WC1E 7JE, United Kingdom
| | - D T J Marsh
- Department of Biochemical Engineering, University College London, Torrington Place, London WC1E 7JE, United Kingdom ; Eli Lilly S.A. Irish Branch, Dunderrow, Kinsale, Co. Cork, Ireland
| | - M D Osborne
- Eli Lilly S.A. Irish Branch, Dunderrow, Kinsale, Co. Cork, Ireland
| | - G J Lye
- Department of Biochemical Engineering, University College London, Torrington Place, London WC1E 7JE, United Kingdom
| | - M Micheletti
- Department of Biochemical Engineering, University College London, Torrington Place, London WC1E 7JE, United Kingdom
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Machado MB, Kresta SM. The confined impeller stirred tank (CIST): A bench scale testing device for specification of local mixing conditions required in large scale vessels. Chem Eng Res Des 2013. [DOI: 10.1016/j.cherd.2013.06.025] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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11
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Machado MB, Bittorf KJ, Roussinova VT, Kresta SM. Transition from turbulent to transitional flow in the top half of a stirred tank. Chem Eng Sci 2013. [DOI: 10.1016/j.ces.2013.04.039] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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12
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Myers KJ, Jones JK, Janz EE, Fasano JB. Effect of liquid level and agitator pumping direction on turbulent blend times. CAN J CHEM ENG 2013. [DOI: 10.1002/cjce.21868] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Kevin J. Myers
- Chemical and Materials Engineering; University of Dayton; Dayton, OH 45469 U.S.A
| | - Jeremy K. Jones
- Chemical and Materials Engineering; University of Dayton; Dayton, OH 45469 U.S.A
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13
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Roy S, Acharya S. Scalar mixing in a turbulent stirred tank with pitched blade turbine: Role of impeller speed perturbation. Chem Eng Res Des 2012. [DOI: 10.1016/j.cherd.2011.10.009] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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14
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Experimental investigation on solid dispersion, power consumption and scale-up in moderate to dense solid–liquid suspensions. Chem Eng Res Des 2012. [DOI: 10.1016/j.cherd.2011.07.009] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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15
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Dynamics of flow macro-formation and its interference with liquid surface in mixing vessel with pitched blade impeller. Chem Eng Res Des 2011. [DOI: 10.1016/j.cherd.2011.04.019] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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16
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Jahoda M, Moštěk M, Fořt I, Hasal P. CFD simulation of free liquid surface motion in a pilot plant stirred tank. CAN J CHEM ENG 2011. [DOI: 10.1002/cjce.20477] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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19
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Bhattacharya S, Kresta SM. CFD Simulations of Three-dimensional Wall Jets in a Stirred Tank. CAN J CHEM ENG 2008. [DOI: 10.1002/cjce.5450800405] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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20
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Xueming S, Xiaoling L, Yulin L. Experimental Study of Influence of the Impeller Spacing on Flow Behaviour of Double-Impeller Stirred Tank. CAN J CHEM ENG 2008. [DOI: 10.1002/cjce.5450810613] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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21
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Hasal P, Jahoda M, Fort I. Macro-instability: a chaotic flow component in stirred tanks. PHILOSOPHICAL TRANSACTIONS. SERIES A, MATHEMATICAL, PHYSICAL, AND ENGINEERING SCIENCES 2008; 366:409-18. [PMID: 17673415 DOI: 10.1098/rsta.2007.2098] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Chaotic features of the macro-instability (MI) of flow patterns in stirred tanks are studied in this paper. Datasets obtained by measuring the axial component of the fluid velocity and the tangential force affecting the baffles are used. Two geometrically identical, flat-bottomed cylindrical mixing tanks (diameter of 0.3m) stirred with either pitched blade turbine impellers or Rushton turbine impeller are used in the experiments, and water and aqueous glycerol solutions are used as the working liquids. First, the presence of the MI component in the data is examined by spectral analysis. Then, the MI components are identified in the data using the proper orthogonal decomposition (POD) technique. The attractors of the macro-instability are reconstructed using either the POD eigenmodes or a method of delays and finally the attractor invariants are evaluated. The dependence of the correlation dimension and maximum Lyapunov exponent on the vessel operational conditions is determined together with their distribution within the tank. No significant spatial variability of the correlation dimension value is observed. Its value is strongly influenced by impeller speed and by the vessel-impeller geometry. More profound spatial distribution is displayed by the maximum Lyapunov exponent taking distinctly positive values. These two invariants, therefore, can be used to locate distinctive regions with qualitatively different MI dynamics within the stirred tank.
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Affiliation(s)
- Pavel Hasal
- Department of Chemical Engineering, Institute of Chemical Technology, 166 28 Prague 6, Czech Republic.
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22
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Ducci A, Doulgerakis Z, Yianneskis M. Decomposition of Flow Structures in Stirred Reactors and Implications for Mixing Enhancement. Ind Eng Chem Res 2007. [DOI: 10.1021/ie070905m] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Andrea Ducci
- Experimental and Computational Laboratory for the Analysis of Turbulence (ECLAT), Division of Engineering, King's College London, Strand WC2R 2LS, U.K
| | - Zacharias Doulgerakis
- Experimental and Computational Laboratory for the Analysis of Turbulence (ECLAT), Division of Engineering, King's College London, Strand WC2R 2LS, U.K
| | - Michael Yianneskis
- Experimental and Computational Laboratory for the Analysis of Turbulence (ECLAT), Division of Engineering, King's College London, Strand WC2R 2LS, U.K
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Virdung T, Rasmuson A. SOLID-LIQUID FLOW AT DILUTE CONCENTRATIONS IN AN AXIALLY STIRRED VESSEL INVESTIGATED USING PARTICLE IMAGE VELOCIMETRY. CHEM ENG COMMUN 2007. [DOI: 10.1080/00986440701554988] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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24
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Aubin J, Kresta S, Bertrand J, Xuereb C, Fletcher D. Alternate Operating Methods for Improving the Performance of Continuous Stirred Tank Reactors. Chem Eng Res Des 2006. [DOI: 10.1205/cherd.05216] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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25
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Delvigne F, Destain J, Thonart P. A methodology for the design of scale-down bioreactors by the use of mixing and circulation stochastic models. Biochem Eng J 2006. [DOI: 10.1016/j.bej.2005.11.009] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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27
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Vallejos JR, Kostov Y, Ram A, French JA, Marten MR, Rao G. Optical analysis of liquid mixing in a minibioreactor. Biotechnol Bioeng 2006; 93:906-11. [PMID: 16317764 DOI: 10.1002/bit.20785] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
A novel optical sensor was used to study mixing and mean circulation time in a model minibioreactor (12.5 mL stirred vessel, equipped with a paddle impeller). Rotational rates in the range of 10-1,000 rpm corresponding to Reynolds number between 14 and 1,350 were studied. Results suggest that depending on the impeller rotational speed, mixing times up to 214 +/- 87 s can be reproducibly achieved. The minibioreactor was operated in the transitional regime, and it was determined that the non-dimensional form for mixing time, NTheta(M) was linearly dependent on Reynolds number. A linear correlation between mean circulation time and the inverse of rotational speed was also determined. The mean circulation time dependence on rotational speed in the 12.5 mL stirred vessel is similar to those found in large-scale stirred vessels. These results suggest that mixing and circulation times found in large-scale reactors can be replicated in minibioreactors.
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Affiliation(s)
- Jose R Vallejos
- Center for Advanced Sensor Technology, Department of Chemical and Biochemical Engineering. University of Maryland at Baltimore County, Baltimore, Maryland 21250, USA
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Kukuková A, Moštěk M, Jahoda M, Machoň V. CFD Prediction of Flow and Homogenization in a Stirred Vessel: Part I Vessel with One and Two Impellers. Chem Eng Technol 2005. [DOI: 10.1002/ceat.200500094] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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31
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Cerbelli S, Giona M, Paglianti A, Pintus S. Intermittency and fine structure of velocity fluctuations arising in flow-pattern transitions in stirred tanks. Chem Eng Sci 2005. [DOI: 10.1016/j.ces.2005.03.032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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32
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Galletti C, Paglianti A, Yianneskis M. Observations on the significance of instabilities turbulence and intermittent motions on fluid mixing processes in stirred reactors. Chem Eng Sci 2005. [DOI: 10.1016/j.ces.2004.10.047] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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33
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Montante G, Moštěk M, Jahoda M, Magelli F. CFD simulations and experimental validation of homogenisation curves and mixing time in stirred Newtonian and pseudoplastic liquids. Chem Eng Sci 2005. [DOI: 10.1016/j.ces.2004.11.020] [Citation(s) in RCA: 70] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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34
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Ghadge R, Patwardhan A, Sawant S, Joshi J. Effect of flow pattern on cellulase deactivation in stirred tank bioreactors. Chem Eng Sci 2005. [DOI: 10.1016/j.ces.2004.09.069] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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35
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Galletti C, Brunazzi E, Pintus S, Paglianti A, Yianneskis M. A Study of Reynolds Stresses, Triple Products and Turbulence States in a Radially Stirred Tank with 3-D Laser Anemometry. Chem Eng Res Des 2004. [DOI: 10.1205/cerd.82.9.1214.44151] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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36
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Micheletti M, Baldi S, Yeoh S, Ducci A, Papadakis G, Lee K, Yianneskis M. On Spatial and Temporal Variations and Estimates of Energy Dissipation in Stirred Reactors. Chem Eng Res Des 2004. [DOI: 10.1205/cerd.82.9.1188.44172] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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37
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Hasal P, Fort I, Kratena J. Force Effects of the Macro-Instability of Flow Pattern on Radial Baffles in a Stirred Vessel With Pitched-Blade and Rushton Turbine Impellers. Chem Eng Res Des 2004. [DOI: 10.1205/cerd.82.9.1268.44169] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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38
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Bhattacharya S, Kresta S. Surface Feed with Minimum by-Product Formation for Competitive Reactions. Chem Eng Res Des 2004. [DOI: 10.1205/cerd.82.9.1153.44173] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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39
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Dispersion coefficients and settling velocities of solids in slurry vessels stirred with different types of multiple impellers. Chem Eng Sci 2004. [DOI: 10.1016/j.ces.2004.04.033] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Yeoh S, Papadakis G, Yianneskis M. Numerical Simulation of Turbulent Flow Characteristics in a Stirred Vessel Using the LES and RANS Approaches with the Sliding/Deforming Mesh Methodology. Chem Eng Res Des 2004. [DOI: 10.1205/0263876041596751] [Citation(s) in RCA: 94] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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41
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Fan J, Rao Q, Wang Y, Fei W. Spatio-temporal analysis of macro-instability in a stirred vessel via digital particle image velocimetry (DPIV). Chem Eng Sci 2004. [DOI: 10.1016/j.ces.2004.01.039] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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42
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Kresta SM, Roussinova V. Comments to “on the origin, frequency and magnitude of macro-instabilities of the flows in stirred vessels” by Nikiforaki et al. Chem Eng Sci 2004. [DOI: 10.1016/j.ces.2003.12.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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43
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Roussinova V, Kresta SM, Weetman R. Low frequency macroinstabilities in a stirred tank: scale-up and prediction based on large eddy simulations. Chem Eng Sci 2003. [DOI: 10.1016/s0009-2509(03)00097-6] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Nienow A, Bujalski W. Recent Studies on Agitated Three-Phase (Gas–Solid–Liquid) Systems in the Turbulent Regime. Chem Eng Res Des 2002. [DOI: 10.1205/026387602321143363] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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45
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Jaworski Z, Zakrzewska B. Modelling of the Turbulent Wall Jet Generated by a Pitched Blade Turbine Impeller. Chem Eng Res Des 2002. [DOI: 10.1205/026387602321143381] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Gogate PR, Beenackers AA, Pandit AB. Multiple-impeller systems with a special emphasis on bioreactors: a critical review. Biochem Eng J 2000; 6:109-144. [PMID: 10959084 DOI: 10.1016/s1369-703x(00)00081-4] [Citation(s) in RCA: 96] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The multiple-impeller agitated systems are compared with single-impeller agitated systems with a special focus on its applications for bioreactors. Correlations reported in the literature for gas phase hold-up, mass transfer coefficient and power consumption under gassed and ungassed conditions are compared and recommendations have been made regarding their suitability for design and scale-up of bioreactors. The multiple-impeller systems are found to be superior as compared to single-impeller systems in all the above mentioned aspects, except liquid mixing. For all kinds of reactors where the sole purpose is mass transfer, multiple-impeller systems are advantageous and there would be large savings on an industrial scale, especially for the bioreactors where the reaction periods are long and the power consumption cost could be a significant component to the overall production costs.
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Affiliation(s)
- PR Gogate
- Division of Chemical Engineering, University Department of Chemical Technology, University of Mumbai, Matunga, -400019, Mumbai, India
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