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Improvement of the Microalgae Harvest by the “Foaming-Scumming” Function of an Airlift Column

Open Journal of Fluid Dynamics 2019年第1期9卷 63-71页

作者： Djimako Bongo Nekoulnag Clarice Jean-Mari Mbailao Mbaiguinam alexis mouangue naminina Jean-Yves Champagne Salif Gaye National Institute of Science and Technology of Abeché Abeché Chad Faculty of Exact and Applied Sciences University of N’Djamena N’Djamena Chad Laboratory of Fluid Mechanics and Acoustics INSA-Lyon Lyon France LME Materials and Energetics Laboratory University Institute of Technology Thiès Senegal

The aim of this research work is to valorize the microalgae grown-up in an Airlift column. The system of fluid circulation and mass transfer is based on the principle of interaction between gas bubbles and a liquid. Thus, this study focuses on the phenomenon of the determination of the vacuum rate, the size and the speed of the bubbles including the optimization of microalgae development within the culture process. In addition, this study tries to understand the close relationship between these phenomena, its environment and the microalgae cell. These studies were conducted on the operation of an Airlift column in aquaculture, mainly in freshwater [1]. However, other researchers [2] are interested in studying saline water. In conclusion, a series of experiments were carried out in order to evaluate the profitability of the Microflotation technique, as a method of separation and concentration in microalgae. These results are very interesting since they reveal that the efficiency of the column, for the foaming-skimming function, is greater by working with less significant air injections, which lead to a reduction in energy cost.

关键词： Vacuum Column Microalgae Vacuum Rate Bubble Size Bubble Speed

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