Measurement of Volumetric Mass Transfer Coefficient in Bubble Columns
The paper presents a brief overview of experiments on volumetric mass transfer coefficient in bubble columns. The available experimental data published are often incomparable due to the different type of gas distributor and different operating conditions used by various authors. Moreover, the value...
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| Format: | Article |
| Language: | English |
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MDPI AG
2018-05-01
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| Series: | ChemEngineering |
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| Online Access: | http://www.mdpi.com/2305-7084/2/2/19 |
| _version_ | 1811245574299582464 |
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| author | Mária Zedníková Sandra Orvalho Marie Fialová Marek C. Ruzicka |
| author_facet | Mária Zedníková Sandra Orvalho Marie Fialová Marek C. Ruzicka |
| author_sort | Mária Zedníková |
| collection | DOAJ |
| description | The paper presents a brief overview of experiments on volumetric mass transfer coefficient in bubble columns. The available experimental data published are often incomparable due to the different type of gas distributor and different operating conditions used by various authors. Moreover, the value of the coefficient obtained experimentally is very sensitive to the particular method and to the physical models used in its evaluation. It follows that the Dynamic Pressure Method (DPM) is able to provide physically correct values not only in lab-scale contactors but also in pilot-scale reactors. However, the method was not correctly proven in bubble columns. In present experiments, DPM was employed in a laboratory-scale bubble column with a coalescent phase and tested in the pure heterogeneous flow regime. The method was successfully validated by the measurements under two different conditions relevant to the mass transfer. First, the ideal pressure step was compared with the non-ideal pressure step. Second, the pure oxygen absorption was compared with the simultaneous oxygen-and-nitrogen absorption. The obtained results proved that DPM is suitable for measuring the mass transport in bubble columns and to provide reliable data of volumetric mass transfer coefficient. |
| first_indexed | 2024-04-12T14:41:49Z |
| format | Article |
| id | doaj.art-b30355a22f594ea19d05f77e333e0bde |
| institution | Directory Open Access Journal |
| issn | 2305-7084 |
| language | English |
| last_indexed | 2024-04-12T14:41:49Z |
| publishDate | 2018-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | ChemEngineering |
| spelling | doaj.art-b30355a22f594ea19d05f77e333e0bde2022-12-22T03:28:49ZengMDPI AGChemEngineering2305-70842018-05-01221910.3390/chemengineering2020019chemengineering2020019Measurement of Volumetric Mass Transfer Coefficient in Bubble ColumnsMária Zedníková0Sandra Orvalho1Marie Fialová2Marek C. Ruzicka3Department of Multiphase Reactors, Institute of Chemical Process Fundamentals of the CAS, v.v.i., Rozvojová 2/135, 165 02 Prague, Czech RepublicDepartment of Multiphase Reactors, Institute of Chemical Process Fundamentals of the CAS, v.v.i., Rozvojová 2/135, 165 02 Prague, Czech RepublicDepartment of Multiphase Reactors, Institute of Chemical Process Fundamentals of the CAS, v.v.i., Rozvojová 2/135, 165 02 Prague, Czech RepublicDepartment of Multiphase Reactors, Institute of Chemical Process Fundamentals of the CAS, v.v.i., Rozvojová 2/135, 165 02 Prague, Czech RepublicThe paper presents a brief overview of experiments on volumetric mass transfer coefficient in bubble columns. The available experimental data published are often incomparable due to the different type of gas distributor and different operating conditions used by various authors. Moreover, the value of the coefficient obtained experimentally is very sensitive to the particular method and to the physical models used in its evaluation. It follows that the Dynamic Pressure Method (DPM) is able to provide physically correct values not only in lab-scale contactors but also in pilot-scale reactors. However, the method was not correctly proven in bubble columns. In present experiments, DPM was employed in a laboratory-scale bubble column with a coalescent phase and tested in the pure heterogeneous flow regime. The method was successfully validated by the measurements under two different conditions relevant to the mass transfer. First, the ideal pressure step was compared with the non-ideal pressure step. Second, the pure oxygen absorption was compared with the simultaneous oxygen-and-nitrogen absorption. The obtained results proved that DPM is suitable for measuring the mass transport in bubble columns and to provide reliable data of volumetric mass transfer coefficient.http://www.mdpi.com/2305-7084/2/2/19bubble columnmass transferdynamic pressure method |
| spellingShingle | Mária Zedníková Sandra Orvalho Marie Fialová Marek C. Ruzicka Measurement of Volumetric Mass Transfer Coefficient in Bubble Columns ChemEngineering bubble column mass transfer dynamic pressure method |
| title | Measurement of Volumetric Mass Transfer Coefficient in Bubble Columns |
| title_full | Measurement of Volumetric Mass Transfer Coefficient in Bubble Columns |
| title_fullStr | Measurement of Volumetric Mass Transfer Coefficient in Bubble Columns |
| title_full_unstemmed | Measurement of Volumetric Mass Transfer Coefficient in Bubble Columns |
| title_short | Measurement of Volumetric Mass Transfer Coefficient in Bubble Columns |
| title_sort | measurement of volumetric mass transfer coefficient in bubble columns |
| topic | bubble column mass transfer dynamic pressure method |
| url | http://www.mdpi.com/2305-7084/2/2/19 |
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