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- W2214131904 abstract "The aim of this paper is the theoretic and experimental study of the hydrodynamics and mass transfer of the swarm of bubbles generated by fine bubble diffusers (FBD) made from ceramics. Thus the hydrodynamic parameters of the dispersed air-water system (pressure loss on FBD, bubble size distribution, global gas hold up) were experimentally determined. Regarding mass transfer, the volumetric mass transfer coefficient Kla, standard oxygen transfer rate (SOTR) and standard aeration efficiency (SAE) were also determined. The results showed that Kla increases with air flow rate and there is an optimum air flow rate (120 180 l/h) that gives maximum aeration efficiency. The maximum value of SAE (4.25 kgO2/kWh) was obtained for Q = 150 l/h, in homogeneous regime. Comparing the ceramic FBD with a sintered glass FBD issued that an increase of 35% of the mass transfer can be obtained by using glass FBD. Still, SAE accomplished by the two types of FBD tested is in the range given by literature or even greater." @default.
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- W2214131904 date "2010-01-01" @default.
- W2214131904 modified "2023-09-25" @default.
- W2214131904 title "ASPECTS OF HYDRODYNAMICS AND MASS TRANSFER IN DIFFUSED AERATION SYSTEMS" @default.
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- W2214131904 doi "https://doi.org/10.30638/eemj.2010.079" @default.
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