Abstract
The aim of this paper is to develop low cost and low power consumption microbubble generator to improve the mass transfer of gas to liquid. Microbubble aeration used in aquaculture to improve dissolve oxygen level, water recycling through dissolved air flotation (DAF), oil refinement and reduction of skin friction on ship Hull. A single Venturi and 3 twin-Venturis microbubble generators are manufactured and tested in this study. Experimental data on microbubbles diameters distribution and dissolved oxygen are presented. The main conclusions
are: i) the mean microbubbles diameters produced by twin-Venturi are smaller by 10 μm than single Venturi generator; ii) the dissolved oxygen concentration was higher for twin-Venturi microbubble generator; iii) the microbubbles size distribution from twin-Venturis have a narrower distribution which reduces the probability of bubbles coalesce as they have very close values of velocities; iv) the bubbles diameters and velocities increase with the height in the water tank.
are: i) the mean microbubbles diameters produced by twin-Venturi are smaller by 10 μm than single Venturi generator; ii) the dissolved oxygen concentration was higher for twin-Venturi microbubble generator; iii) the microbubbles size distribution from twin-Venturis have a narrower distribution which reduces the probability of bubbles coalesce as they have very close values of velocities; iv) the bubbles diameters and velocities increase with the height in the water tank.
| Original language | English |
|---|---|
| Article number | 118994 |
| Number of pages | 16 |
| Journal | Chemical Engineering Science |
| Volume | 280 |
| Early online date | 15 Jun 2023 |
| DOIs | |
| Publication status | Published - 5 Oct 2023 |
Bibliographical note
Funding Information:The authors acknowledge EPSRC for funding this project under the grant agreement no. EP/P018211/1, in collaboration between Teesside University and University of Malaya.
Publisher Copyright:
© 2023 The Author(s)