scholarly journals Model uncertainty of interfacial area and mass transfer coefficients in absorption column packings

2017 ◽  
Author(s):  
Sumudu S. Karunarathne ◽  
Dag A. Eimer ◽  
Lars Erik Øi
Keyword(s):  
Mass Transfer ◽  
Model Uncertainty ◽  
Interfacial Area ◽  
Transfer Coefficients ◽  
Absorption Column ◽  
Mass Transfer Coefficients ◽  
Column Packings

Liquid-liquid mass transfer studies in various stirred vessel designs

2015 ◽  
Vol 31 (4) ◽  
Author(s):  
Reza Afshar Ghotli ◽  
Abdul Raman Abdul Aziz ◽  
Shaliza Ibrahim
Keyword(s):  
Mass Transfer ◽  
Transfer Coefficient ◽  
Mass Transfer Coefficient ◽  
Interfacial Area ◽  
Operating Conditions ◽  
Experimental Results ◽  
Dispersed Phase ◽  
Transfer Coefficients ◽  
Mass Transfer Coefficients ◽  
Wide Range

AbstractA general review on correlations to evaluate mass transfer coefficients in liquid-liquid was conducted in this work. The mass transfer models can be classified into continuous and dispersed phase coefficients. The effects of drop size and interfacial area on mass transfer coefficient were investigated briefly. Published experimental results for both continuous and dispersed phase mass transfer coefficients through different hydrodynamic conditions were considered and the results were compared. The suitability and drawbacks of these correlations depend on the operating conditions and hydrodynamics. Although the results of these models are reasonably acceptable, they could not properly predict the experimental results over a wide range of designs and operating conditions. Therefore, proper understanding of various factors affecting mass transfer coefficient needs to be further extended.

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.

The transfer of alkanoic acids from dodecane to water

1981 ◽  
Vol 59 (7) ◽  
pp. 1096-1100 ◽  
Author(s):  
Norman H. Sagert ◽  
Michael J. Quinn ◽  
Robert S. Dixon
Keyword(s):  
Mass Transfer ◽  
Temperature Dependence ◽  
Interfacial Area ◽  
Small Range ◽  
Diffusion Cell ◽  
Transfer Coefficients ◽  
Mass Transfer Coefficients ◽  
Alkanoic Acids ◽  
Interfacial Transfer ◽  
Alkane Chain

A rotating diffusion cell was used to study the transfer of five alkanoic acids from dodecane to water under conditions of known interfacial area and hydrodynamics. The acids studied were acetic, butanoic, hexanoic, 2-methylbutanoic and 2,2-dimethyl-propanoic acids. Small interfacial resistances to mass transfer were noted, the mass transfer coefficients for interfacial transfer being in the range 2.6 to 4.7 μm/s at 25 °C. This small range means that the effects of the length and structure of the alkane chain on the resistance to mass transfer are minimal. A study of the temperature dependence of the resistance to mass transfer at the interface showed that the resistance is largely entropic rather than enthalpic.

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