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Bubble size distribution in a bubble column applied to aquaculture systems |
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| Authors: | Shulin Chen Michael B Timmons Daniel J Aneshansley James J Bisogni Jr |
| Institution: | a Department of Civil Engineering, Louisiana State University, Baton Rouge, Louisiana 70803, USA b Department of Agricultural and Biological Engineering, Cornell University, Ithaca, New York 14853, USA c Department of Environmental Engineering, Cornell University, Ithaca, New York 14853, USA |
| Abstract: | Bubble size distribution affects the gas-liquid mass transfer rates during aeration and foam fractionation processes employed in recirculating aquacultural systems. The effects of air flow rate, protein concentration and air stone pore size on bubble characterization were investigated. Bubble size was measured photographically in conjunction with image-processing techniques. The study indicated that bubble size increased with air flow rate and air stone pore size, but decreased with protein concentration. Within the tested range of these variables, the geometric diameters of the majority of the bubbles (90%) were within the range of 0·5–3·0 mm, and the bubble sizes followed a normal distribution. |
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