Prediction of mass transfer coefficients in a slurry bubble column based on the geometrical characteristics of bubbles

2014 ◽  
Vol 106 ◽  
pp. 119-125 ◽  
Author(s):  
Stoyan Nedeltchev ◽  
Krishna D.P. Nigam ◽  
Adrian Schumpe
Keyword(s):  
Mass Transfer ◽  
Bubble Column ◽  
Transfer Coefficients ◽  
Mass Transfer Coefficients ◽  
Geometrical Characteristics ◽  
Slurry Bubble Column

scholarly journals Hydrodynamics and mass transfer coefficients in a bubble column photo-bioreactor

2017 ◽  
Vol 168 ◽  
pp. 55-66 ◽  
Author(s):  
Onkar N. Manjrekar ◽  
Yujian Sun ◽  
Lian He ◽  
Yinjie J. Tang ◽  
Milorad P. Dudukovic
Keyword(s):  
Mass Transfer ◽  
Bubble Column ◽  
Transfer Coefficients ◽  
Mass Transfer Coefficients ◽  
Photo Bioreactor

Comparative Study of Two-Phase Gas-Liquid Flow in the Ejector Induced Upflow and Downflow Bubble Column

2005 ◽  
Vol 3 (1) ◽  
Author(s):  
Ajay Mandal ◽  
Gautam Kundu ◽  
Dibyendu Mukherjee
Keyword(s):  
Mass Transfer ◽  
Comparative Study ◽  
Aqueous Solutions ◽  
Bubble Column ◽  
Methyl Cellulose ◽  
Stable Operation ◽  
Transfer Coefficients ◽  
Two Phase ◽  
Mass Transfer Coefficients ◽  
Frictional Pressure Drop

A comparative study has been made on the hydrodynamics and gas-liquid mass transfer performances of upflow and downflow bubble columns. Gas-liquid distributions in the column are made by an ejector system using liquid as motive fluid and gas is used as secondary fluid for both the cases. The two-phase hydrodynamic studies have been done with water and aqueous solutions of carboxy methyl cellulose at different concentrations and air as gas phase. The volumetric mass transfer coefficients have been measured by absorbing air-carbon dioxide mixture in aqueous solutions of sodium carbonate and bicarbonate. For downflow system, experiments are carried out at natural suction of air through the ejector; whereas for upflow system, air is forced through the secondary entrance of the ejector from a high pressure tank at any desired rate. The effect of gas and liquid flowrates on gas holdup, frictional pressure drop and mass transfer coefficients have been investigated. All the experiments have been performed in the homogeneous flow regime for a stable operation.

Effect of surfactants on mass transfer coefficients in bubble column contactors: an interpretative critical review study

2019 ◽  
Vol 0 (0) ◽  
Author(s):  
Sahand Nekoeian ◽  
Masoud Aghajani ◽  
Seyed Mehdi Alavi ◽  
Fatemeh Sotoudeh
Keyword(s):  
Mass Transfer ◽  
Bubble Column ◽  
Interfacial Area ◽  
Positive Influence ◽  
Transfer Coefficients ◽  
Mass Transfer Coefficients ◽  
Future Studies ◽  
Specific Interfacial Area ◽  
Transfer Operation ◽  
Review Study

Abstract Since surfactants have been recognized as the most frequently faced contaminants of bubble column-related processes over time, their impact on the mass transfer operation of these columns has become a demanding research interest for two recent decades. Despite the similarities expressing the overall negative and positive influence of these chemicals on mass transfer coefficients and specific interfacial area, respectively, the discrepancies and, sometimes, paradoxical results are still under debate in the literature. To make a more comprehensive recognition of the mentioned subject, the current paper has tried to pave the path by reviewing all the major methods utilized in related research works. Thereafter, an interpretative argumentative comparison of the main findings of relevant studies has also been proposed, enlightening some of the research gaps which can be the potential candidates for future studies.

Study of Hydrophobic VOCs Absorption Mechanism in a Bubble Column: Bubble Hydrodynamic Parameters and Mass Transfer Coefficients

2013 ◽  
Vol 48 (13) ◽  
pp. 1963-1976 ◽  
Author(s):  
Pisut Painmanakul ◽  
Sirikarn Laoraddecha ◽  
Patcharaporn Prajaksoot ◽  
Nattawin Chawaloesphonsiya ◽  
Sutha Khaodhiar
Keyword(s):  
Mass Transfer ◽  
Bubble Column ◽  
Transfer Coefficients ◽  
Absorption Mechanism ◽  
Mass Transfer Coefficients ◽  
Hydrodynamic Parameters

Organic liquids in a bubble column: Holdups and mass transfer coefficients

AIChE Journal ◽  
1987 ◽  
Vol 33 (9) ◽  
pp. 1473-1480 ◽  
Author(s):  
S. S. öztürk ◽  
A. Schumpe ◽  
W.-D. Deckwer
Keyword(s):  
Mass Transfer ◽  
Bubble Column ◽  
Organic Liquids ◽  
Transfer Coefficients ◽  
Mass Transfer Coefficients
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