Nano Archive

Transmission electron microscopic observations of nanobubbles and their capture of impurities in wastewater

Uchida, Tsutomu and Oshita, Seiichi and Ohmori, Masayuki and Tsuno, Takuo and Soejima, Koichi and Shinozaki, Satoshi and Take, Yasuhisa and Mitsuda, Koichi (2011) Transmission electron microscopic observations of nanobubbles and their capture of impurities in wastewater. Nanoscale Research Letters, 6 (1). pp. 1-9.

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Official URL: http://www.nanoscalereslett.com/content/6/1/295

Abstract

Unique properties of micro- and nanobubbles (MNBs), such as a high adsorption of impurities on their surface, are difficult to verify because MNBs are too small to observe directly. We thus used a transmission electron microscope (TEM) with the freeze-fractured replica method to observe oxygen (O2) MNBs in solutions. MNBs in pure water and in 1% NaCl solutions were spherical or oval. Their size distribution estimated from TEM images close to that of the original solution is measured by light-scattered methods. When we applied this technique to the observation of O2 MNBs formed in the wastewater of a sewage plant, we found the characteristic features of spherical MNBs that adsorbed surrounding impurity particles on their surface.

Item Type:Article
Subjects:Physical Science > Nanophysics
Physical Science > Nano objects
Material Science > Nanochemistry
Material Science > Nanostructured materials
Divisions:Faculty of Engineering, Science and Mathematics > School of Physics
Faculty of Engineering, Science and Mathematics > School of Chemistry
ID Code:10899
Deposited By:JNCASR
Deposited On:19 Oct 2011 07:11
Last Modified:19 Oct 2011 07:11

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