Characteristics of micro-nanobubbles and their applications in soil environment improvement

Due to their unique physical and chemical characteristics such as ultra-high stability, easily producing free radicals and high mass transfer efficiency, micro-nanobubbles continue to arouse the exploration interest of domestic and foreign researchers. In recent years, micro-nanobubble technology as a new and high-efficiency technique, has been widely used in aquaculture, agricultural planting, flotation, water treatment, etc. But it is insufficient in the application of improving the soil environment. In this review, based on the existing research results of improving soil environment with micro-nano bubbles, their basic properties, domestic and overseas research progress and applications were reviewed and discussed, and the effect of micro-nanobubbles in the soil improvement process was preliminarily clarified, which could enhance soil permeability, effectively remove organic and metal pollutants in water, change the structure of microbial clusters, and reduce the ability of mineral deposition. It was expected to bring some inspiration for subsequent research on micro-nanobubbles to improve the soil environment.