Removal of Cu2+, Fe2+, Ni2+, Zn2+ and Cl− from Industrial wastewater using a Polyethersulfone/Carbon Nanotube/Polyvinyl alcohol composite membrane

摘要: Abstract Polyethersulfone (PES) is commonly used to fabricate ultrafiltration (UF) membranes applied during the treatment of wastewater due its high permeability and tensile properties, chemical thermal stability. However, PES has low hydrophilicity sulfonyl functional group therefore becomes susceptible fouling, resulting in reduced membrane performance lifespan. In this study, 10 wt% PES/CNT were prepared by infusing 2.5, 5, 7.5 Carbon nanotubes (CNTs) into produce PES/2.5 CNT, PES/5 PES/7.5 CNT PES/10 phase inversion. The immersed 1 PVA solution coat a hydrophilic layer on surface CNT/PVA, CNT/PVA membranes. A pure reference was also for comparison purposes. This research focused evaluating effect coating PES/CNT/PVA membrane. TEM characterization revealed that CNTs are MWCNT, PSD done obtain particle size, FTIR confirmed formation –COOH –OH groups CNTs, SEM porous structures, BET showed an increase pore size at higher loading, properties decrease when added, contact angle studies significant with addition PVA. Filtration experiments conducted using dead-end stirred cell. most improved results good trade-off balance between flux rejection, generating 7.94 L/m2h rejection 88.56% Cu2+, 96.15% Fe2+, 89.06% Ni2+, 100% Zn2+ 99.93% Cl−. Anti-fouling tests cross-flow filtration rig only 70.77% could be recovered. These been infused functionalized coated can effectively remove Cl− from industrial wastewater.