Interfacial turbulence is a common feature of mass transfer processes. Mass transfer rate can be enhanced due to interfacial turbulence. A mass transfer experimental equipment with a laser Schlieren system and a computer recorder was set up. The effect of interfacial turbulence on the mass transfer rate in physical absorption processes was investigated quantitatively. The gas used was carbon dioxide and the absorbents were ethanol and methanol. An enhancement factor, which can be used to reflect the influen...