Research on Removal of Estradiol in Water by Nanofiltration Membrane

Endocrine Disruptors, which is trace but more and more noted in aquatic environment, has a significant effect on people´s hormone systems. The estradiol (E₂) was a research object, and the effects of solution parameters (concentration, pH, ionic strength and natural organic matter (NOM) ) on the retention of trace E₂ by nanofiltration membrane (NF) (BDXN-90 polyamind aromatic compound membrane) filtration process were investigated. Experimental results indicated that the trace E₂ in water could be rejected very effectively by NF stability, and the average retention efficiency was above 95%. Moreover, in our operating conditions, Concentration, pH, ionic strength and NOM played important roles in retention of E₂.