The faujasite Y is a zeolite of large-pores with remarkable properties. It knew broad applications and was used in many industrial processes. In this study, it is prepared by crystallization of the gel resulting from the combination of the silica solution and that of the alumina. Its structure was characterized by XRD, SEM, BET, ATR-FTIR, and by elementary analysis. It is used in organic depollution for removing of methylene blue by the technique of membrane treatment. The membranes are made from a biodegradable polymer, cellulose acetate and another nonbiodegradable polyvinyl chloride, serving as a matrix and containing different percentages of faujasite Y. The composite films obtained behave like filters and were used for removing of the methylene blue of the aqueous solutions. The filtrates obtained are analyzed by UV. The obtained results show the existence of a selective retention for the selected polymers. Retention in general increases with increasing faujasite Y concentration.
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