CO<sub>2</sub> Micro–Nanobubble Technology in Carbon Capture, Utilization, and Storage: A Mini Review
Sijia Wang, Ziming Wang, Pengfei Lv, Lanlan Jiang, Changrui Shi, Yongchen Song
Abstract
This work regards the application of micro–nanobubble CO 2 (MB CO 2 ) in the carbon capture, utilization, and storage (CCUS) field. The feasibility of using MB CO 2 technology to mitigate climate change has been partially validated at a laboratory scale. The review begins by summarizing and comparing the working principles of MB CO 2 generators, dynamic dispersion, and physical stability control methods. In the context of CO 2 underground storage, it analyses the impact of CO 2 distribution characteristics on microflow and transport patterns, particularly in confined spaces, and summarizes the microscopic mechanisms of macroscopic flow, interphase heat, and mass transfer, highlighting the necessity of adopting upscaling approaches for further study. Finally, the paper emphasizes the role of MB CO 2 in improving capture and storage efficiency through hydrate technologies. However, numerous limitations persist in practical applications, such as the rapid formation of hydrates potentially causing blockages near wellbores. MB CO 2 holds significant potential in advancing carbon-neutral emission reduction technologies and demonstrates promising prospects for practical applications.