The Effect of Surfactants on Marangoni Convection in the Isobutanol/Water System
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Abstract
In this paper the effect of Marangoni convection on mass transfer for the partially miscible isobutanol/water system is analysed. Comparisons are made between the predictions for interfacial stability and mass transfer fluxes, and the experimental results obtained for the transfer of isobutanol into water when the water phase is pure, and when it is “contaminated” with surfactants. The interfaces have been visualised with the aid of a Schlieren optical system and concentration profiles obtained with a Mach-Zehnder interferometer. The presence in the system of the ionic surfactants investigated has been found to increase further the Marangoni convection observed in the clean system and to enhance the initial mass transfer fluxes. However, interfacial convection is suppressed with the addition of the non-ionic surfactant studied and a reduction in the mass transfer fluxes is measured.
Copyright (c)2000 by Walter de Gruyter GmbH & Co. KG
Articles in the same Issue
- Guest Editorial
- On the Role of Porosity in the Stokes Flow Around a Solid Particle
- Permanent Excitation of Standing Gravity Surface Waves by the Resonant Coalescence of Non-Coalescent Cold and Hot Pure Liquid
- Molecular Description of the Surface Tension of Curved Interfaces
- The Effect of Surfactants on Marangoni Convection in the Isobutanol/Water System
- Generalized Separation of Variables in Nonlinear Heat and Mass Transfer Equations
- Chaos and Hyperchaos in a Model of the Belousov-Zhabotinsky Reaction in a Batch Reactor
- Anomalous Damping of Capillary Waves With Surfactant Solutions
- A New Discrete Model for the Non-Isothermic Dynamics of the Exothermic CO-Oxidation on Palladium Supported Catalyst
- Foam Microgeometry
- Instabilities By Local Heating Below an Interface
- Oscillatory Instability and High-Frequency Wave Modes in a Marangoni-Bénard Layer with Deformable Free Surface
Articles in the same Issue
- Guest Editorial
- On the Role of Porosity in the Stokes Flow Around a Solid Particle
- Permanent Excitation of Standing Gravity Surface Waves by the Resonant Coalescence of Non-Coalescent Cold and Hot Pure Liquid
- Molecular Description of the Surface Tension of Curved Interfaces
- The Effect of Surfactants on Marangoni Convection in the Isobutanol/Water System
- Generalized Separation of Variables in Nonlinear Heat and Mass Transfer Equations
- Chaos and Hyperchaos in a Model of the Belousov-Zhabotinsky Reaction in a Batch Reactor
- Anomalous Damping of Capillary Waves With Surfactant Solutions
- A New Discrete Model for the Non-Isothermic Dynamics of the Exothermic CO-Oxidation on Palladium Supported Catalyst
- Foam Microgeometry
- Instabilities By Local Heating Below an Interface
- Oscillatory Instability and High-Frequency Wave Modes in a Marangoni-Bénard Layer with Deformable Free Surface
