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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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