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.

中文翻译：

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气体纳米气泡分散体在环境过程中起重要作用-生成方法综述

本文介绍了有关纳米气泡产生的研究论文的综述。在本文的主要部分，讨论了许多纳米气泡的产生方法，以查明在类似实验设置中获得的结果的差异。已将不同的生成方法制成表格，以显示相的组成，生成的气泡的直径以及一种方法中有关差异的注释。去年，纳米气泡在环境过程中的应用数量正在增加。但是，对它们的生成方法的彻底研究并未涵盖在文献中。这篇评论文章收集有关纳米气泡生成方法的知识，并比较不同研究团队获得的结果。它应该为未来有关纳米气泡的研究奠定基础，