Gas-liquid mass transfer in gas-liquid-liquid dispersions

Lekhal, A. ; Chaudhari, R. V. ; Wilhelm, A. M. ; Delmas, H. (1997) Gas-liquid mass transfer in gas-liquid-liquid dispersions Chemical Engineering Science, 52 (21-22). pp. 4069-4077. ISSN 0009-2509

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Gas-liquid mass transfer measurements by dynamic absorption in a stirred autoclave have been performed successively in various single liquid phases and in liquid-liquid mixtures. Data were interpreted through a pseudo-homogeneous model based on Danckwerts surface renewal theory and on continuous liquid-liquid equilibrium due to very fast liquid mass transfer. As a major result, the volumetric mass transfer coefficient k1a is clearly increased when adding a disperesed organic phase, with a clear maximum at 3 to 4% of organic volume fraction. Higher enhancement (up to 70%) was performed at high stirring speed and with hydrogen better than with carbon monoxide as the dissolving gas.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:Volumetric Coefficient; Mass Transfer Enhancement; Gas-liquid-liquid; Absorption; Gas Diffusion; Stirrer Speed
ID Code:7587
Deposited On:25 Oct 2010 11:05
Last Modified:30 May 2011 04:21

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