Change in Interfacial Tension at the Interface Between Two Immiscible Liquids during Electrodeposition of Zinc

2010 ◽  
Vol 13 (7) ◽  
pp. D57 ◽  
Author(s):  
E. Tada ◽  
M. Saeki ◽  
H. Kaneko
Keyword(s):  
Interfacial Tension ◽  
Immiscible Liquids

Measurement of interfacial tension of immiscible liquids of equal density

AIChE Journal ◽  
1988 ◽  
Vol 34 (1) ◽  
pp. 155-157 ◽  
Author(s):  
S. B. Reddy Karri ◽  
V. K. Mathur
Keyword(s):  
Interfacial Tension ◽  
Immiscible Liquids ◽  
Equal Density

scholarly journals Interfacial tension measurement of immiscible liquids using a capillary tube

AIChE Journal ◽  
1992 ◽  
Vol 38 (4) ◽  
pp. 615-618 ◽  
Author(s):  
N. Rashidnia ◽  
R. Balasubramaniam ◽  
D. Del Signore
Keyword(s):  
Interfacial Tension ◽  
Capillary Tube ◽  
Immiscible Liquids

An acoustic method of measuring interfacial tension on the interface between immiscible liquids

2009 ◽  
Vol 47 (2) ◽  
pp. 187-194 ◽  
Author(s):  
V. V. Filippov ◽  
D. A. Yagodin ◽  
P. S. Popel’
Keyword(s):  
Interfacial Tension ◽  
Acoustic Method ◽  
Immiscible Liquids

scholarly journals Spontaneous non-linear oscillations of interfacial tension at oil/water interface

2015 ◽  
Vol 13 (1) ◽  
Author(s):  
Nina M. Kovalchuk
Keyword(s):  
Interfacial Tension ◽  
Surfactant Solution ◽  
Immiscible Liquids ◽  
Abrupt Decrease ◽  
Liquid Phases ◽  
Pure Solvent ◽  
Non Linear ◽  
Surfactant Transfer ◽  
Linear Effects ◽  
Oil Water

AbstractThree particular systems are considered where transfer of a surfactant across the interface between two immiscible liquids, water and oil, is accompanied by spontaneous oscillations of relaxation type with an abrupt decrease of interfacial tension followed by its gradual increase. These oscillations cannot be explained in the frameworks of linear stability analysis, because they are related to essentially non-linear effects. The oscillations characteristics depend on the properties of a surfactant (interfacial activity, solubility, partition coefficient, density difference between the surfactant solution and pure solvent), other solutes present in one or both liquid phases, and, usually, also on the system geometry. If the transferred surfactant is an ionic one, then, the oscillations of interfacial tension are synchronised with the oscillations of electric potential across the interface. The available hypothesis about oscillations mechanism are discussed, in particular, the model proposed recently for oscillations due to Marangoni instability by surfactant transfer from a point source located in one of the liquid bulk phases.

Flotation of dispersed gold drops in melts as an element of technological scheme of enrichment

2020 ◽  
pp. 399-409
Author(s):  
A. M. Amdur ◽  
V. V. Pavlov ◽  
S. A. Fedorov
Keyword(s):  
Interfacial Tension ◽  
Slag System ◽  
Mineral Processing ◽  
Gas Bubble ◽  
Immiscible Liquids ◽  
Gold Particles ◽  
Physicochemical Phenomenon ◽  
Dispersed Gold ◽  
Enrichment Methods ◽  
Oxide Melts

A significant part of gold reserves is represented by microand nanodispersed particles in natural deposits and in technogenic formations. In order to extract microdispersed gold particles by existing enrichment methods, they must be enlarged. This is possible in the process of heating and melting the material by flotation. As a result, the flotation of gold drops in the melts becomes an element of the enrichment scheme. It includes grinding the materials and enrichment by gravity methods after it has cooled. Usually flotation is analyzed as one of the technologies for mineral processing. But it is based on the complex and insufficiently studied physicochemical phenomenon of swimming bodies of higher density than that of a liquid on its surface under the influence of interfacial tension forces. Therefore, flotation refers not only to solid, but also to liquid substances. The conditions and mechanism of the flotation of gold and sulfide drops in oxide melts are analyzed. It was found that the flotation of gold drops in melts leads to their significant enlargement and proceeds at rather high rates. The process of passing a gas bubble through the interphase boundary of two immiscible liquids is considered using the example of a matte-slag system and the conditions for a matte drop to float together with a bubble. The scale of solving these problems is determined by the fact that they expand the idea of flotation of drops in melts as a stage of mineral processing in which valuable components are in a dispersed state.

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