(549e) Application of Entrapped Nano Zero Valent Iron into Cellulose Acetate Membranes for Domestic Wastewater Treatment

Nowadays, nanotechnology and filtration using membranes have proven to be effective in wastewater treatment. Nanoparticles are highly reactive and effective redox and anti-microbial materials, while membrane filtration techniques reduce wastewater contaminants throughout the filtration process in an economical and fast manner. This study merges membrane technology and nanotechnology together through preparation of entrapped nano Zero Valent Iron (nZVI) into cellulose acetate (CA) membranes. The prepared nZVI was characterized by XRD and UV spectrophotometer, while the prepared membrane was characterized by measuring the water content, chemical compatibility, oil resistance, and membrane strength. The prepared membrane was tested for domestic wastewater treatment at different operating parameters pH, entrapped nZVI dose, and different flow rates. The efficiency of treatment was evaluated according to the reduction in turbidity, total nitrogen (TN), total phosphorus (TP), chemical oxygen demand (COD), biological oxygen demand (BOD), ammonia, nitrate, total solids (TS), total dissolved solids (TDS), total suspended solids (TSS), and iron concentrations. The associated reductions were recorded as 92, 70, 69, 80, 73, 37, 33, 36, 28, 77 and 64%, respectively for pH between 7 and 8 using nZVI dosage of 0.2 g/100 mL CA and a flow rate of 100 mL/min. This technique is more economical and efficient than the conventional technique.