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AUTHOR

Libor Labík

showing 2 related works from this author

Scale-up and viscosity effects on gas–liquid mass transfer rates in unbaffled stirred tanks

2018

Abstract The interest in the process industry on unbaffled stirred tanks has greatly expanded in the last years because they may bring about significant advantages in a number of applications, including biochemical, food and pharmaceutical processes where the presence of baffles is undesirable for several reasons. Despite their application potential, unbaffled vessels still lack fundamental information, due to the fact that only recently their capabilities have started being dug out. The lack of information on scale up effects is possibly the main reason hindering practical applications. In this work the influence of vessel size and liquid viscosity on the mass transfer performance in unbaf…

Gas-“liquid mass transferWork (thermodynamics)Scale-upSettore ING-IND/25 - Impianti ChimiciGeneral Chemical EngineeringBioreactorUnbaffledBaffle02 engineering and technologyViscosityStirred tank020401 chemical engineeringMass transferChemical Engineering (all)0204 chemical engineeringScale (chemistry)Chemistry (all)General ChemistryMechanics021001 nanoscience & nanotechnologyViscosity effectVessel diameterVolume (thermodynamics)SCALE-UPEnvironmental science0210 nano-technologyChemical Engineering Research and Design
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Gas-liquid mass transfer rates in unbaffled tanks stirred by PBT: scale-up effects and pumping direction

2018

Abstract Unbaffled stirred tanks are increasingly recognized as a viable alternative to common baffled tanks for a range of applications such as biochemical, food or pharmaceutical processes where the presence of baffles is undesirable for some reason. In this work, the mass transfer performance of unbaffled stirred tanks with pitched blade turbine, operating either in up-pumping or down-pumping mode, was investigated. The influence of impeller size and liquid viscosity were also investigated. The mass transfer intensity was measured by means of the Simplified Dynamic Pressure. Method The measurements concerned both coalescent and non-coalescent (viscous) batches. Results confirm that incre…

Mass transfer coefficientMaterials scienceViscosityGeneral Chemical EngineeringScale-upChemistry (all)Pitched blade turbineBaffleUnbaffled02 engineering and technologyGeneral ChemistryMechanicsDissipation021001 nanoscience & nanotechnologyImpellerViscosity020401 chemical engineeringMass transferSCALE-UPMass transferChemical Engineering (all)0204 chemical engineering0210 nano-technologyIntensity (heat transfer)Fermenter
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