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- W2067572545 abstract "The size of bubbles generated using a single-hole sparger, a multi-hole sparger and a flotation cell were measured. While the size of bubbles generated from the single-hole sparger does not depend on frother concentration, the bubble size strongly depends on frother concentration when the multi-hole sparges, or flotation cell, are utilized. The bubbles size ceases to depend on frother at the concentrations exceeding the value characteristic for each frother and referred to as the critical coalescence (CCC). All the bubble size vs. frother concentration curves converge on a single curve. Aqueous solutions of the frothers that are characterized by low CCC values from foams quite stable under dynamic conditions. Since bubble coalescence can be inhibited by frother concentrations exceeding the CCC, sparing systems can be studied and compared only at frother concentrations that exceed CCC. On a mesuré la taille des bulles produites par un aérateur à orifice unique, un aérateur à orifices multiples et une cellule de flottation. Alors que la taille des bulles produites avec l'aérateur à orifice unique n'est pas liée à la concentration d'agent moussant, la taille des bulles dépend fortement de la concentration d'agent moussant dans le cas des aérateurs à orifices multiples ou de la cellule de flottation. La taille des bulles cesse d'êde la valeur caractéristique de chaque agent moussant (concentration de coalescence critique ou CCC). Toutes les courbes de taille des bulles par rapport à la concentration d'agent moussant se superposent. Les solutions aqueuses des agents moussants qui sont caractérisés par de faibles valeurs de CCC forment des mousses plutôt stables dans des conditions dynamiques. Considérant que la coalescence es bulles peut être inhibée par des concentrations d'agent moussant excédant la CCC, les systèmes de dispersion peuvent être étudiés et comparés seulemetn à des concentrations d'agent moussant qui excèdent la CCC." @default.
- W2067572545 created "2016-06-24" @default.
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- W2067572545 date "2002-04-01" @default.
- W2067572545 modified "2023-09-28" @default.
- W2067572545 title "Bubble coalescence and its effect on dynamic foam stability" @default.
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- W2067572545 doi "https://doi.org/10.1002/cjce.5450800216" @default.
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