Today, an urgent task is to strive to reduce the total "carbon footprint". There are several types of gas separation devices: cryogenic; membrane and sorption, which are most effective in their implementation. Among the sorption methods, the most developed are those based on absorption — the absorption of the gas component is realized by the entire volume of the liquid. To increase productivity, ultrasonic action is used on a liquid film, along which a flow of absorbed gas - carbon dioxide - moves. Over the past years, no deep research has been carried out on the formation of fluid oscillations in various modes for effective interaction with the gas flow. Therefore, the article discusses the possibilities of implementing the process of absorption of carbon dioxide under high-intensity ultrasonic action (in cavitation mode) on dispersed media with a liquid phase. The proposed and developed model, based on the analysis of the influence of the wave-like capillary disturbances of the liquid-gas surface arising due to cavitation, made it possible to establish the possibility of a significant acceleration of gas absorption into the liquid and to reveal the optimal diffusion modes in the volume of the liquid. The research results confirmed the possibility of accelerating the absorption of carbon dioxide and other harmful and target gaseous impurities by at least 3 times.