Modeling of bubble coalescence in saline water in the presence of flotation frothers
作者： Liguang Wang
DOI: 10.1016/J.MINPRO.2014.11.008
关键词: Polypropylene glycol 、 Surface tension 、 Sodium dodecyl sulfate 、 Capillary wave 、 Chemistry 、 Disjoining pressure 、 Bubble 、 Surface force 、 Analytical chemistry 、 Radius 、 Chromatography
摘要: This paper proposes a model based on the capillary wave theory of Valkovska, Danov and Ivanov to predict lifetimes (τ) small foam films confined between air bubbles in saline water containing flotation frothers such as sodium dodecyl sulfate (SDS), polypropylene glycol (PPG) with molecular weight 400, methyl isobutyl carbinol (MIBC). The considers important issues intersurface force, bubble size, surface tension, film radius. predicted τ values these were compared experimental ones. Under assumption tangentially immobile surfaces, excellent agreement experiment for was obtained SDS PPG, whereas slightly under-predicted MIBC. can be improved by adding an adjustable parameter that is related lateral diffusion constant concentration frother molecules at air/water interface.
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