✦ LIBER ✦

Permeation of gases through liquid films

✍ Scribed by K. Sujatha; T.R. Das; R. Kumar; K.S. Gandhi

Publisher: Elsevier Science
Year: 1988
Tongue: English
Weight: 711 KB
Volume: 43
Category: Article
ISSN: 0009-2509
DOI: 10.1016/0009-2509(88)85098-x

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✦ Synopsis

Permeation of gases through single surfactant stabilized aqueous films has previously been studied in view of the potentiality of foam to separate gaseous mixtures. The earher analysis assumed that the gas phase was well mixed and that the mass-transfer process was completely controlled by the liquid film. Permeabilities evaluated from single film data based on such analysis failed to predict the mass-transfer data obtained on permeation through two films. It is shown that the neglect of gas-phase resistance and the effect of film movement is the reason for the failure of the well-mixed gas models. An exact analysis of diffusion through two films is presented. It successfully predicts the experimental data on two films based on parameters evaluated from single film data.

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