利用显微激光全息干涉法研究了第三组分对气泡传质的影响. 第三组分分另选择了几种不同类型的表面活性剂. 结果表明，加入微量的表面活性剂，气泡传质时的近界面浓度将发生显著变化。

界面性质对气液传质有重要髟响。分子通过界面时需克服界面自由能，界面两侧的浓度不一致。本文导出了两者之间的关系。

A micro-holographic interferometer of two-wavelength lasers has been designed and constructed. The concentration profiles close to the interface of 1iquid side were successfully measured for multicomponent gas-liquid mass transfer. It was discovered that the measured concentration at fldistance 0.0lmm away from the interface was far from the thermodynamic equilibrium value, and thus flsteep concentration gradient existed near the interface. The turbulent phenomena near the interface during interphase mass transfer were noted by experiment. The turbulent intensity and time were related to the composition and the components of the system to be studied, and also affected by the velocity of each phase. The concentration field near fronta1 interface was different from that of tai1-vortex area for the mass transfer around a bubble.

A self-developed laser image measurement system was established to study the behavior of bubble formation at a single orifice in non-Newtonian Polyacrylamide (PAAm) solutions. The images of bubbles were captured by a CCD camera and the volumes of bubbles were digitally analyzed on-line. The effects of rheological property of PAAm solution, orifice, reservoir and gas flowrate on the bubble formation were studied experimentally. It is found that the bubble volume increases with the concentration of PAAm solution, the diameter of the orifice and the gas flowrate, respectively, whereas little effect by reservoir is observed in experiments.

Based on the method of molecular therm odynamics, them asstransfer mechanism at gas-liquid interface is studied theoretically, and a new mathematical model is proposed. Using laser holographic interference technique, the hydrodynam ics and mass transfer characteristics of CO2 absorption are meas ured. It is shown that the calculated results are in good agrement with the experimental data.