Studies on the liquid-liquid interfacial mass transfer process using holographic interferometry

Abstract

This paper aims at the interfacial phenomena of liquid-liquid mass transfer and its characteristic. By using the real-time holographic technique, the concentration distributions on the aqueous side were obtained according to holographic diagrams of mass transfer of ethanol through the interface of oil and water at different initial concentrations. Furthermore, the concentrations near the interface and the mass transfer coefficients were attained. A correlation of concentration near the interface to the concentration of the solute in the oil side was proposed. An approach of interfacial energy with solute concentration was established, and the calculated results are at good agreement with the experimental data. It is indicated that the liquid-liquid mass transfer process is approximately in accordance with two-film theory, the interfacial performance may be changed by the addition of the solute, and the interface of liquid-liquid is non-equilibrium thermodynamically during the mass transfer process.

References

1. Ma Y G Yu G C He M X Experimental study of concentration profile close to theinterface for multicomponent gas-liquid mass transferJournal of Chemical Industry and Engineering 1994 45(5)636641(in Chinese)
2. Nishikawa K Fukunaka Y Sakka T Ogata Y H Selman J R Ionic mass transfer during electrochemicaldissolution of Li metal in PC electrolyte solutionJournal of Electroanalytical Chemistry 2005 584(1)6369
3. Ota M Izuo S Nishikawa K Fukunaka Y Kusaka E Ishii R Selman J R Measurement of concentrationboundary layer thickness development during lithium electro depositiononto a lithium metal cathode in propylene carbonateJournal of Electroanalytical Chemistry 2003 559(1)175183
4. Zhao C W He M X Zhu C Y Ma P S Determinationof liquid diffusion coefficient by real-time holographic interferometerJournal of Tianjin University 2004 37(5)438442(in Chinese)
5. Ma Y G Yu G C The theoretical studies ofinterphase mass transferJournal of TianjinUniversity 1998 31(4)506510(in Chinese)
6. Ma Y G Gao R X Feng H S Yu K T Gas-liquidinterphase mass transfer theory of absorption processesChemical Engineering 2003 31(1)1316(in Chinese)
7. Ma Y G Yu G C Li H Z Note on the mechanism of interfacial mass transfer of absorptionprocesses internationalJournal of Heatand Mass Transfer 2005 48(16)34543460