Effects of surface active agents on hydrodynamics and mass transfer characteristics in a split-cylinder airlift bioreactor with packed bed

2012 ◽  
Vol 90 (7) ◽  
pp. 899-905 ◽  
Author(s):  
Mostafa Keshavarz Moraveji ◽  
Elmira Mohsenzadeh ◽  
Mona Ebrahimi Fakhari ◽  
Reza Davarnejad
Keyword(s):  
Mass Transfer ◽  
Packed Bed ◽  
Airlift Bioreactor ◽  
Transfer Characteristics ◽  
Surface Active Agents ◽  
Surface Active

Heat and Mass Transfer Characteristics in Adsorption of Water Vapor for Silica Gel Packed Bed Adsorber.

2000 ◽  
Vol 33 (1) ◽  
pp. 12-18 ◽  
Author(s):  
Eri Yamamoto ◽  
Koichi Katsurayama ◽  
Fujio Watanabe ◽  
Hitoki Matsuda ◽  
Masanobu Hasatani
Keyword(s):  
Mass Transfer ◽  
Water Vapor ◽  
Heat And Mass Transfer ◽  
Silica Gel ◽  
Packed Bed ◽  
Transfer Characteristics ◽  
Adsorption Of Water ◽  
Adsorption Of Water Vapor

The effects of surface films in damping eddies at a free surface of a turbulent liquid

1966 ◽  
Vol 290 (1423) ◽  
pp. 515-526 ◽  
Keyword(s):  
Mass Transfer ◽  
Liquid Surface ◽  
Active Material ◽  
Surface Films ◽  
Surface Renewal ◽  
Elastic Stresses ◽  
Hydrodynamic Behaviour ◽  
Surface Active Agents ◽  
Surface Active ◽  
Surface Active Material

Mass-transfer rates across a gas liquid surface into a turbulent liquid depend markedly on the hydrodynamic behaviour of the liquid immediately subjacent to the interface. Though turbulence is always somewhat damped at a free liquid surface, there may remain significant movements of liquid into the plane of a clean surface. A very small amount of surface-active material, however, sets up gradients of surface tension between different parts of the surface, and the accompanying (elastic) stresses are shown to damp very strongly eddies approaching the surface, thus reducing the rate of ‘surface renewal’: mass-transfer of a solute across the liquid surface is correspondingly retarded. This paper treats these phenomena quantitatively, and includes five predictions of the effects of surface-active agents. Comparison is made with published experimental data.

Effects of surface-active agents on mass transfer inside drops

1979 ◽  
Vol 34 (2) ◽  
pp. 217-224 ◽  
Author(s):  
L. Mekasut ◽  
J. Molinier ◽  
H. Angelino
Keyword(s):  
Mass Transfer ◽  
Surface Active Agents ◽  
Surface Active

Effects of geometrical design on hydrodynamic and mass transfer characteristics of a rectangular-column airlift bioreactor

2007 ◽  
Vol 34 (3) ◽  
pp. 279-288 ◽  
Author(s):  
Peter M. Kilonzo ◽  
Argyrios Margaritis ◽  
M.A. Bergougnou ◽  
Juntang Yu ◽  
Qin Ye
Keyword(s):  
Mass Transfer ◽  
Airlift Bioreactor ◽  
Geometrical Design ◽  
Transfer Characteristics
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