In this work, we removed copper (II) from an aqueous solution by using zeolite modified with a silicon-organic monomer (3-aminopropyltriethoxysilane; APTES) depending on the pH, time, temperature, and initial concentration of Cu(II) ions. To confirm modification process assess interaction between Cu(II), performed instrumental analyses (XRD, SEM/EDX, TGA/DTA, BET, FT-IR, XPS). We determined max...