Elaboration, characterization and application of polysulfone and polyacrylic acid blends as ultrafiltration membranes for removal of some heavy metals from water.

摘要: Polysulfone (PSf)/polyacrylic acid ultrafiltration (PSf/PAA) membranes were prepared from a polymer blend in dimethylformamide by coagulation water according to the wet phase inversion method. Immobilization of water-soluble PAA within non-soluble PSf matrix was proven increase ion exchange capacity and intensity carboxyl groups' peak with content as shown Fourier transform infrared spectra. These results lead consider that form semi-interpenetrating networks. The obtained showed decrease mean surface-pore sizes, overall porosity hydraulic permeability content. Such imputed morphologic modifications film immobilization increasing amount. PSf/PAA high lead, cadmium chromium rejection which reaches 100% at pH superior 5.7 low pH. Moreover, heavy metal decreases feed solution concentration applied pressure increases. behaviors attributed role carboxylic groups or complexation. As matter fact, strong ion-PAA interactions revealed scanning electron microscopy energy dispersive X-rays (SEM-EDX).