Aoufi, Boutheyna2021-04-082021-04-082020-01-01salle des thèsesDOC-543-17-01https://dspace.univ-tlemcen.dz/handle/112/16289Séparation, Analyse, Environnement, Optimisation, Rejet Industriel, Nanofiltration, Osmose Inverse, Cr (III), Fe (III), Ni (II), Co (II), Cu (II), Zn (II), Cd (II), Pb (II) & La (III).The present pilot scale study consists of the optimization of the ion separation process of (III), Fe (III), Ni (II), Co (II), Cu (II), Zn (II) ), Cd (II), & Pb (II) from an industrial waste solution and the La (III) / Fe (III) and Cu (II) / Fe (III) ions from their synthetic mixture, by the nanofiltration technique and reverse osmosis, several experimental parameters have been studied such as: effect of the initial concentration, pressure effect, pH effect. The performance of lanthanum extraction by nanofiltration is studied using the methodology of experimental designs.frSeparation, Analysis, Environment, Optimization, Industrial Wastes, , Nanofiltration, Reverse Osmosis,Cr (III), Fe (III), Ni (II), Co (II), Cu (II), Zn (II), Cd (II), Pb (II) & La (III)Thesis