Environment-friendly surface cleaning using micro-nano bubbles--颗粒学报PARTICUOLOGY

Jin, N., Zhang, F., Cui, Y., Sun, L., Gao, H., Pu, Z., & Yang, W. (2022). Environment-friendly surface cleaning using micro-nano bubbles. Particuology, 66, 1-9. https://doi.org/10.1016/j.partic.2021.07.008

Environment-friendly surface cleaning using micro-nano bubbles

Nuo Jin, Fenghua Zhang^*, Yan Cui, Le Sun, Haoxiang Gao, Ziang Pu, Weimin Yang

College of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, Beijing 100029, China

10.1016/j.partic.2021.07.008

Volume 66, July 2022, Pages 1-9

Received 16 June 2021, Revised 24 July 2021, Accepted 27 July 2021, Available online 30 August 2021, Version of Record 30 October 2021.

E-mail: zhangfenghua@mail.buct.edu.cn

Highlights

• Water with bubbles can be used for cleaning a contaminated while precise surface.

• Cleaning using bubbles is a harmless and environment-friendly technology.

• Cleaning mechanism by micro-nano bubbles is explained.

• Coupled cleaning method of bubbles and ultrasound can achieve better performance.

• Characterization method of the cleaning effect needs to be improved.

Abstract

Cleaning a surface using a solution containing a large number of micro to nano scale bubbles has significant advantage regarding environmental protection. This review first briefly introduces the cleaning mechanism of micro-nano bubbles (MNBs), including physical and chemical effects. Then the applications of MNBs in cleaning of metal parts, precision parts, cultural relics or food are introduced. After that, coupled cleaning method of ultrasound and bubbles is introduced. Finally, the characterization methods for the cleaning effect are introduced, which mainly focuses on the changes of physico-chemical properties (mass or cleaning area, infiltration, colony number and light scattering intensity) of the cleaned parts or that (like conductivity) of the solvent. It is believed that MNBs technology will be applied in a broader range of surface cleaning applications.

Graphical abstract

Keywords

Micro-nano bubbles; Surface cleaning; Green cleaning; Environmental protection

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