Gas nanobubble dispersions as the important agent in environmental processes – generation methods review
Karol Ulatowski, Paweł Sobieszuk
Abstract
Abstract This article presents the review of the research papers concerning nanobubble generation. In main section of this article, numerous methods of nanobubble generation have been discussed pinpointing the differences in results obtained in similar experimental setups. Different generation methods have been tabularized to present the composition of phases, the diameter of generated bubbles as well as the commentary concerning discrepancies within one method. The number of nanobubble applications in environmental processes is increasing in the last year; however, the thorough investigation of their generation methods is not covered in literature. This review article is gathering knowledge about nanobubble generation methods and is comparing results obtained by different research teams. It should lay foundation for future research concerning nanobubbles, what will lead to increasing the efficiency of various environmental processes, including wastewater flotation, metal recovery, and soil and groundwater remediation.