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In the processes of mass transfer across gas-liquid or liquid-
liquid interfaces, turbulence caused by gradients of density or
interfacial tension may occur. Under the condition that
advantages or that disavantages for gas absorption, the effect
of artificially induced Marangoni convection in the processe of
mass transfer is studied experimentally. In the present work,
the mass transfer coefficients were determined for the
absorption of O2 into solutions of different viscosities in the
presence and absence oThe experimental results reveal that mass
transfer rate of pure water with interfacial turbulence induced
by pure ethanol can be as mush as 1.3 times larger than that
without it, and the absorption enhancement is increased with the
increase of viscosity. A dimensionless equation for corelating
the experimental mass tranefer coefficient in the presence of
interfacial turbulence was satisfactorily developed.In the other
hand, experimental reaults show that chemical absorption with
enzyme and Pt catalyst can increase mass transfer rate
efficiently. However, in the process of chemical absorption,
interfacial turbulence did not increase the mass transfer
raterate and the absorption enhancement was decreased with the
increase of concentration of enzyme and Pt catalyst adding into
the solution. At the beginning of the chemical reaction, the
process of absorption is diffusion-controlled, so the absorption
rate is less than predict. At that time the experimental results
show more enhancement of the absorption by induced Marangoni
convection. When the reaction occuring rapidly the process of
absorption is reaction-controlled and the absorption rate is
also increased rapidly. At that time the experimental results
show less enhancement of the absorption by induced interfacial
turbulence.
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