The main factors influencing the deposition of aerosol particles in the dynamic foam layer of an absorber are evaluated based on the hydrodynamic regularities of vortex-injection formation of the dynamic foam structure. Based on the analysis of the interphase transfer determined by the conditions of formation and renewal of free deposition surface within the dynamic foam layer, the dependencies describing the process of aerosol particles collection were obtained. The resulting expressions are used to calculate the operating and technological parameters of the process of dust removal from the gas flow in the dynamic foam layer of a liquid absorber. A formula has been found that can be used to determine the contact surface of the phases.