by B. Lekhlif, G. Hébrard, N. Dietrich, A. Kherbeche, J. Echaabi Afr. J. Environ. Sci. Technol.
By : N. DIETRICH, J. FRANCOIS, M. JIMENEZ, A. COCKX, P. GUIRAUD, G. HEBRARD Abstract: A fast method is proposed for determining the oxygen gas-liquid diffusion coefficient from measurements of the fluorescence quenching behind a bubble. The approach consists of capturing pictures of concentration field at micro-scale in the laminar bubble wake. The […]
By Mélanie Jimenez, Nicolas Dietrich, John R. Grace, Gilles Hébrard Abstract: Powerful techniques, based on the Planar Laser Induced Fluorescence (PLIF) technique, are deployed to locally visualize and quantify the impact of surfactants in wastewaters on hydrodynamics and oxygen mass transfer. Bubble diameter, aspect ratio, rise velocity, contamination angle, as well as flux, flux density, […]