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Abstract
The objective of this work is to study the effect of the liquid phase physicochemical characterization on the hydrodynamic parameters of an electroflotation column working in batch mode. Video recording and image processing method was employed to calculate the oxygen bubbles diameter and velocity, as well as gas holdup. Tap water, a solution of cationic surface tension as well as a solution of anionic surface tension have been used as model solutions in order to evaluate the viscosity and the surface tension effect on oxygen bubble parameters and gas holdup. Models predicting bubble diameters, Reynolds number, and gas holdup were also established.