Molecular simulations of droplet coalescence in oil/water/surfactant systems

2007 ◽  
Vol 127 (13) ◽  
pp. 134701 ◽  
Author(s):  
Live Rekvig ◽  
Daan Frenkel
Keyword(s):  
Molecular Simulations ◽  
Droplet Coalescence ◽  
Oil Water ◽  
Surfactant Systems

scholarly journals Molecular Simulations of Surface Forces and Film Rupture in Oil/Water/Surfactant Systems

Langmuir ◽  
2004 ◽  
Vol 20 (26) ◽  
pp. 11583-11593 ◽  
Author(s):  
Live Rekvig ◽  
Bjørn Hafskjold ◽  
Berend Smit
Keyword(s):  
Molecular Simulations ◽  
Surface Forces ◽  
Film Rupture ◽  
Oil Water ◽  
Surfactant Systems

Interfacial tension of oil/water emulsions with mixed non-ionic surfactants: comparison between experiments and molecular simulations

RSC Advances ◽  
2016 ◽  
Vol 6 (6) ◽  
pp. 4723-4729 ◽  
Author(s):  
P. Posocco ◽  
A. Perazzo ◽  
V. Preziosi ◽  
E. Laurini ◽  
S. Pricl ◽  
...  
Keyword(s):  
Interfacial Tension ◽  
Molecular Simulations ◽  
Ionic Surfactants ◽  
Oil Water ◽  
Free Spaces ◽  
Surfactant Systems

Smaller Span molecules occupy the free spaces between bulkier Tween molecules thus lowering interfacial tension as compared to those obtained for single surfactant systems.

Coarse-Grained Molecular Simulations to Investigate Asphaltenes at the Oil–Water Interface

2015 ◽  
Vol 29 (3) ◽  
pp. 1597-1609 ◽  
Author(s):  
Yosadara Ruiz-Morales ◽  
Oliver C. Mullins
Keyword(s):  
Molecular Simulations ◽  
Coarse Grained ◽  
Water Interface ◽  
Oil Water

Droplet Coalescence in Liquid/Liquid Separation

2020 ◽  
Vol 142 (11) ◽  
Author(s):  
Weiwei E. ◽  
Kevin Pope ◽  
Xili Duan
Keyword(s):  
Relative Error ◽  
Volume Fraction ◽  
Force Balance ◽  
Water Volume ◽  
Droplet Coalescence ◽  
Liquid Separation ◽  
Water Separation ◽  
Numerical Predictions ◽  
New Correlation ◽  
Oil Water

Abstract In this paper, a new correlation is developed to predict liquid/liquid separation dynamics with a focus on a water/oil mixture. The correlation employs a force balance on the droplets to predict the rising velocity of the oil phase. The effect of droplet coalescence on the droplet's rising velocity is investigated, and the new correlation predicts the coalescence rate based on the oil/water volume fraction, as well as the initial droplet diameter. To develop the correlation for droplet coalescence, a series of new numerical simulations of a batch oil/water separation process were conducted. An equivalent experiment was conducted, the results of which agree well with the numerical predictions (relative error of 13.39%). The new correlation can predict the rate of separation with a relative error of 6.35% compared to numerical predictions.

Influence of Methane on the Phase Behavior of Oil + Water + Nonionic Surfactant Systems

1998 ◽  
Vol 102 (1) ◽  
pp. 200-205 ◽  
Author(s):  
E. S. J. Rudolph ◽  
M. J. Bovendeert ◽  
Th. W. de Loos ◽  
J. de Swaan Arons
Keyword(s):  
Phase Behavior ◽  
Nonionic Surfactant ◽  
Oil Water ◽  
Surfactant Systems
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