Kinetics of carbon dioxide removal from water in flat membrane contactor

Journal article (2014)

Authors

V. I. Roldugin Russian Academy of Sciences
A Shutova Russian Academy of Sciences
A. V. Volkov Russian Academy of Sciences
V. V. Volkov National Research Nuclear Institute MEPhI, Russian Academy of Sciences
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External organisation
CO removal PVTMS Gas-liquid membrane contactor Membrane contactor modeling Membrane desorption
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Published Date

2014

Language

English

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Abstract

The problem of regeneration of a carbon dioxide physical absorbent in gas-liquid membrane contactor has been addressed using water as the absorbent. An analytical solution for the mass transfer equation has been obtained with taking into account not only axial, but also radial diffusion of the solute in the liquid flow and thereby significantly extending the area of applicability of the solution. The kinetics of carbon dioxide desorption from aqueous solutions has been described for the membrane contactor based on asymmetric gas separation membrane made of polyvinyltrimethylsilane (PVTMS). It has been shown that the model agrees well with experimental data for different pressures of water saturation with carbon dioxide and desorption temperatures.