Réduction de la concentration des tensioactifs dans une solution aqueuse par électroflotation

The purpose of this study was to investigate the use of electroflotation to reduce surfactant concentrations of Tween 20 and Tween 60 present in aqueous streams. A series of experiments was carried out using a reactor of electroflotation. The variables examined included the effects of the current density, the additive concentration, and the initial surfactant concentration. Results showed that the residual surfactant concentration decreases by increasing the current density, the added salt concentrations, or the initial concentration of solution. According to these results, more than 88% of Tween 60 and 75% of Tween 20 are effectively separated from an initial concentration of 200 mg/L. Key words: wastewater, surfactant, electroflotation, reduction.