... Mass Transfer in Multiphase Systems and its Applications 70 series of interferograms of the concentration field generated around a dissolving drop of the mixture containing surfactant ... size can, during their movement in the system, collide and interact with the gas–liquid interface and, in consequence, the gas bubbles break into smaller ones causing an increase in interfacial ... Mass Transfer in Multiphase Systems and its Applications 102 The data, concerning double impeller systems, obtained for various values of superficial gas velocity wog, are presented in...