نوع مقاله : مقاله پژوهشی
عنوان مقاله English
نویسندگان English
Oil effluents contain persistent volatile organic compounds, hydrocarbons, chlorinated substances, and heavy metals. The emission of organic compounds is of interest to many research and environmental organizations due to their destructive environmental effects and the risks they pose to the workers of these complexes. In this study, the fabrication of modified composite membranes for the removal of heavy metals from industrial effluents was studied experimentally. Membranes were fabricated by interfacial polymerization method and FTIR, XRD, EDX, SEM and contact angle analyses were performed. By increasing the concentration of Fe3O4/APTES nanoparticles from 0 to 0.3 wt%, the contact angle of the nanocomposite membranes decreased from 3.74° to 4.54°. After 60 minutes, the water flux through the M0 membrane is approximately 25.91 L/m2.hr and the water flux through the M1, M2 and M3 membranes is 36.91, 98.103 and 36.125 L/m2.hr, respectively. The performance of different membranes for the removal of heavy metals-strontium (Sr), copper (Cu), lead (Pb) and cobalt (Co)-present in water under operating conditions of 10 bar pressure, 2 L/min flow rate, 60 minutes time and ambient temperature showed that the modified membrane with 0.1 wt% Fe3O4/APTES concentration (M2) has the best performance compared to other membranes. The highest percentage of heavy metal removal was obtained with the M2 membrane, achieving 36.57% for Sr, 56.86% for Cu, 64.72% Pb and 65.89% for heavy metals. The M2 membrane can recover about 21.8% of the water flux compared to 8.2% of the M0 membrane, indicating the higher performance of the M2 membrane in improving the water flux through the membrane.
کلیدواژهها English