etude experimentale et simulation l'elimination d'un colorant avec bio coagulant microfiltration

Abstract

The purpose of this work is to determine the best conditions for the removal of a dye dispersed by microfiltration and by coagulation-microfiltration, the objective of the coagulation is the destabilization of the suspended colored materials so as to improve the efficiency of the membrane filtration, the coagulant used in our case is of natural origin, it is the Acorn. A complementary study by simulation was carried out using the SuperPro Designer (SD) software to validate the results obtained experimentally, for both processes: microfiltration and coagulation-microfiltration. The parameters used in this study are the determination of the optimal dose of the biocoagulant and the optimum pH, the permeate flux as a function of time and transmembrane pressure (TMP), the concentration of the dye and the turbidity of the permeate And the concentration as a function of time and TMP for different pH values, and finally the retention rate of the membrane (RT), for the simulation, the parameter followed is the concentration of the dye of the retentate and the permeate as a function of time For different TMPs and in both cases: microfiltration and coagulation-microfiltration. The results obtained show that the permeate flux decreases with time and increases with the TMP according to Darcy's law. Concentrations and turbidities of the permeate are much lower than those of the concentrate (for microfiltration and coagulation-microfiltration) the retention rate of the membrane exceeds 70% almost in all cases. The experimental results are in very good agreement with the calculated results. From these results, it can be concluded that the dye is removed by microfiltration and that the coagulation increases the filtration efficiency, the SuperPro Designer software can be used with great efficiency for the removal of the dye by a membrane process.