scholarly journals Mass Transfer of Ion Accompanied by Instantaneous Chemical Reaction in a Diaphragm Cell

1971 ◽  
Vol 74 (10) ◽  
pp. 1961-1966
Author(s):  
Kakusaburo ONDA ◽  
Takeshi KOBAYASHI ◽  
Michihiko FUJINE ◽  
Masahiro TAKAHASHI
Keyword(s):  
Mass Transfer ◽  
Chemical Reaction ◽  
Diaphragm Cell ◽  
Instantaneous Chemical Reaction ◽  
Instantaneous Chemical

Mass transfer with instantaneous chemical reaction in a rigid drop

AIChE Journal ◽  
1988 ◽  
Vol 34 (4) ◽  
pp. 694-697 ◽  
Author(s):  
B. K. Dutta ◽  
Usuf Middya ◽  
Parthasarathi Ray
Keyword(s):  
Mass Transfer ◽  
Chemical Reaction ◽  
Instantaneous Chemical Reaction ◽  
Instantaneous Chemical

Experimental study on miscible viscous fingering involving viscosity changes induced by variations in chemical species concentrations due to chemical reactions

2007 ◽  
Vol 571 ◽  
pp. 475-493 ◽  
Author(s):  
YUICHIRO NAGATSU ◽  
KENJI MATSUDA ◽  
YOSHIHITO KATO ◽  
YUTAKA TADA
Keyword(s):  
Viscous Liquid ◽  
Chemical Reaction ◽  
Chemical Species ◽  
Viscous Fingering ◽  
Shielding Effect ◽  
Species Concentration ◽  
Cell Changes ◽  
Hele Shaw Cell ◽  
Instantaneous Chemical Reaction ◽  
Instantaneous Chemical

When a reactive and miscible less-viscous liquid displaces a more-viscous liquid in a Hele-Shaw cell, reactive miscible viscous fingering takes place. We succeed in showing experimentally how a reactive miscible viscous fingering pattern in a radial Hele-Shaw cell changes when the viscosity of the more-viscous liquid is varied owing to variation in chemical species concentration induced by an instantaneous chemical reaction. This is done by making use of a polymer solution's dependence of viscosity on pH. When the viscosity is increased by the chemical reaction, the shielding effect is suppressed and the fingers are widened. As a result, the ratio of the area occupied by the fingering pattern in a circle whose radius is the length of the longest finger is larger in the reactive case than in the non-reactive case. When the viscosity is decreased by the chemical reaction, in contrast, the shielding effect is enhanced and the fingers are narrowed. These lead to the area ratio being smaller in the reactive case than in the non-reactive case. A physical model to explain this change in the fingering pattern caused by the chemical reaction is proposed.

Mass transfer in the system with instantaneous chemical reaction and interfacial turbulence extraction of acetic acid from isobutanol into aqueous solution of sodium hydroxide

1979 ◽  
Vol 44 (9) ◽  
pp. 2780-2789 ◽  
Author(s):  
Milada Řeháková ◽  
Vladimír Rod
Keyword(s):  
Aqueous Solution ◽  
Mass Transfer ◽  
Acetic Acid ◽  
Sodium Hydroxide ◽  
Chemical Reaction ◽  
Transfer Rate ◽  
Mass Transfer Rate ◽  
Flat Interface ◽  
Additive Term ◽  
Instantaneous Chemical Reaction

Extraction of acetic acid from isobutanol into aqueous solution of sodium hydroxide in the system with flat interface was studied. The effect of interfacial turbulence, induced by chemical reaction on the mass transfer rate of reacting components across the interface was determined independently from measurements of mass transfer rate of non-reacting solvents. The concept of enhancement factor was used for description of the phenomenon. The effect of interfacial turbulence on mass transfer rate was expressed by the additive term to the rate of energy dissipation on the interface.

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