| Title: | Capturing of gaseous and particulate pollutants into liquid phase by a water/oil column using microbubbles |
| Author(s): | Sekiguchi K; Yasui F; Fujii E; |
| Address: | "Graduate School of Science and Engineering, Saitama University, 255 Shimo-Okubo, Sakura, Saitama 338-8570, Japan. Electronic address: kseki@mail.saitama-u.ac.jp. Graduate School of Science and Engineering, Saitama University, 255 Shimo-Okubo, Sakura, Saitama 338-8570, Japan; Technical R & D Center, Techno Ryowa LTD, 3001-2 Odanacho, Tsuzuki, Yokohama, Kanagawa 224-0027, Japan. Graduate School of Science and Engineering, Saitama University, 255 Shimo-Okubo, Sakura, Saitama 338-8570, Japan" |
| DOI: | 10.1016/j.chemosphere.2020.126996 |
| ISSN/ISBN: | 1879-1298 (Electronic) 0045-6535 (Linking) |
| Abstract: | "A new method was developed to remove gaseous and particulate pollutants by capturing them in water using microbubbles. The capture efficiency of gaseous toluene and ultrafine carbon particles, which are hydrophobic substances, was remarkably improved compared to water-only conditions by adding a small amount of oily substances (4% volume fraction of water) to the water surface. The physicochemical properties of four types of oily substances were investigated. Rapeseed and mineral oil exhibited good capture efficiency during a capture experiment of high-concentration gaseous toluene for 96 h. Additionally, a long-term continuous capture experiment for 24 days revealed that the capture mechanisms of rapeseed and mineral oil were different. The toluene concentration in rapeseed oil reached saturation in the middle of the experiment while the capture efficiency of mineral oil remained constant. It was also shown that the emulsion formation greatly affected the capture of rapeseed oil. Thus, it is expected that a new gaseous pollutant treatment technology that can capture and remove gaseous/particulate pollutants regardless of their hydrophilic/hydrophobic properties could be developed in the future" |
| Keywords: | "Dust Environmental Pollutants/*chemistry Gases Hydrophobic and Hydrophilic Interactions *Microbubbles *Models, Chemical Oils Particulate Matter/analysis Toluene/chemistry Air purification Capture efficiency Gaseous volatile organic compound (VOC) Microbub;" |
| Notes: | "MedlineSekiguchi, Kazuhiko Yasui, Fumio Fujii, Ema eng England 2020/05/22 Chemosphere. 2020 Oct; 256:126996. doi: 10.1016/j.chemosphere.2020.126996. Epub 2020 May 7" |
