Gas−liquid contactors’ aeration capacities when agitated by Rushton turbines of various diameters

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985874%3A_____%2F20%3A00523478" target="_blank" >RIV/67985874:_____/20:00523478 - isvavai.cz</a>

Alternative codes found

RIV/60461373:22340/20:43921568

Result on the web

<a href="http://hdl.handle.net/11104/0307838" target="_blank" >http://hdl.handle.net/11104/0307838</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/acsomega.9b04005" target="_blank" >10.1021/acsomega.9b04005</a>

Result language

angličtina

Original language name

Gas−liquid contactors’ aeration capacities when agitated by Rushton turbines of various diameters

Original language description

Mass transfer processes are one of the most important operations in chemical, biochemical, and food industries worldwide. In the processes that are controlled by the gas-liquid mass transfer rate, the volumetric mass transfer coefficient kLa becomes a crucial quantity. The dataset was measured with the aim to create a correlation for kLa prediction in a non-coalescent batch under the wide range of experimental conditions. The dynamic pressure method, which was reported as physically correct in the past, was chosen to be the method for experimental determination of kLa. Our previous work targeted the kLa dependencies in viscous and coalescent batches resulting in correlations that are viable for the broad range of process conditions. We reported that the best-fit correlation is based on the hydrodynamic parameter circumferential velocity of impeller blades in the case of non-coalescent liquids in the vessel equipped by single or multiple impellers at a constant D/T ratio (diameter of the impeller to the inner diameter of the tank). Now, we focus on the influence of various impeller diameters on transport characteristics (mainly kLa) in a non-coalescent batch. The experiments are carried out in a multiple-impeller vessel equipped with Rushton turbines (of four diameters) and in both laboratory and pilot-plant scales. Various impeller frequencies and gas flow rates are used. We examine the suitability of the hydrodynamic description, which was reported in the past, to predict kLa also when the D/T ratio changes. We show that the correlation based on the energy dissipation rate better fits the experimental data and predicts kLa values more accurately in the case of varying D/T values. This correlation could be adopted in the design and scale-up of agitated devices operating with non-coalescent batches.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10305 - Fluids and plasma physics (including surface physics)

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2020

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

ACS Omega

ISSN

2470-1343

e-ISSN

—

Volume of the periodical

5

Issue of the periodical within the volume

10

Country of publishing house

US - UNITED STATES

Number of pages

6

Pages from-to

5072-5077

UT code for WoS article

000520853400039

EID of the result in the Scopus database

2-s2.0-85081694628