抄録
This paper aims to investigate the influence of liquid flow on the mass transfer in bubble column from an immersed downward nozzle in the cubic container filled with the water without oxygen. The temporal oxygen concentration is measured with the DO meter. The flow visualization technique includes the computational fluid dynamics (CFD). The height of the downward nozzle is set at h=6.0, 20, 60 and 210[mm] from the container bottom against the liquid depth of HL=220[mm]. The mass transfer coefficient is then found not to be affected by liquid flow although the volumetric mass transfer becomes large in small h due to large specific gas-liquid interfacial area.
