Vol. 12, No.2, pp.89-92 (2019)

Identification of High Concentration Ultra-fine Bubbles in the Water

V. Thonglek¹, K. Yoshikawa¹, Y. Tokuda², and Y. Ueda³

¹Faculty of Engineering, Rajamangala University of Technology Lanna, Chiang Mai, Thailand
²Shiga University / Nature Science, Japan
³Research Institute for Sustainable Humanosphere, Kyoto University, Uji, Kyoto, Japan

Abstract

High concentration ultra-fine bubbles (UFB) measured as high as 10E+11 bubbles /mL was studied to identify as real bubbles, not particles. Through the measurements of 2 methods, a static laser light scattering method and particle tracking analysis method, UFB showed rapid transition in terms of distribution shapes, whereas, the particle (100nm latex) distribution showed steady, measured by HORIBA LA-960A. Moreover, relative intensity of side-scattering light from a horizontal laser beam was compared, and showed clear identification of bubbles, measured by NANOSIGHT LM10^TM.

Keywords - High concentration ultra-fine bubbles, nanoparticles, laser light scattering method, particle tracking analysis method

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