Facilitated transport of carbon dioxide through an immobilized liquid membrane of K2CO3/KHCO3 aqueous solution View Full Text


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Article Info

DATE

1997-09

AUTHORS

Sang-Wook Park, Nam-Hwan Heo, Jeung-Seug Kim, Dong-Soo Suh

ABSTRACT

The facilitated transport of CO2 through a hydrophilic polymeric membrane immobilized with K2CO3/ KHCO3 buffer solution has been investigated. The reactions of dissolved CO2 in electrolyzed alkaline solution must consider hydration of CO2 with water, chemical reaction of CO2 with OH- and dissociation of HCO32- into CO32-. It is necessary to simplify these reactions as a simple model, which is used to analyze the transport system. From experiments in the liquid membrane with alkaline buffer solution, it is shown that the flux of CO2 into K2CO3KHCO3 aqueous solution can be enhanced by the presence of CO32-. A diffusion model with an overall reaction based on the film theory is proposed that predicts the experimentally observed facilitation factor with reasonable accuracy. The present model is compared with the rigorous diffusion model involving the complicated conventional chemical reactions. More... »

PAGES

312-320

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/bf02707045

DOI

http://dx.doi.org/10.1007/bf02707045

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1051981196


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