Polyether sulfone membrane modeling and construction for the removal of nitrate from water using ion interference sulfate and iron nano-particle

Abstract

The aim of this study was constructed the polyether sulfone membrane and modelling it, and for checking impact pressure, the amount of iron nanoparticles and sulfate iron intervention in reducing nitrate irons from water. For the removal ion of nitrate at 50 ppm concentration of nitrate potassium, we made three membranes of 15, 18 and 21 percent of sulfone polyether and we studied the effect of pressure of 5, 10, 15 bar without the presence of iron nanoparticles and at the pressure of 10 bar with the presence of 3, 6 and 9 percent of iron nanoparticles. At the end by modelling in the proper environment, an appropriate modelling developed for predicting the separation process. In order to analyzing the counfounding sulphate ions with nitrate, the removal of nitrate rate was measured by adding the 50 ppm salt potassium sulfate to the solution containing potassium nitrate and the effect of anion was conducted with the presence of 3 percent of iron nanoparticles and without of it. The results showed that without the presence of iron nanoparticles, most of removal of nitrate rate of 43/2 percent occurred at the pressure of 5 bar and with the membrane of 21 percent. In the next stage using 21 percent of polyether sulfone, the removal of nitrate rate was studied by the presence of 3, 6, and 9 percent of iron nanoparticles and at the pressure of 10 bars which the results showed that the highest removal at the presence of 3 percent of iron nanoparticles of 99/42 percent.The influence of potassium sulfate without the presence of nano and with the membrane of 21 percent of sulfone polyether was studied with the presence of 3 percent of iron nanoparticles and with the 21 percent of sulfone polyether at the pressure of 5, 10 and 15. The results showed that by addition potassium sulfate to the solution containing potassium nitrate and by increasing the pressure, the amount of nitrate removal has reduced compared to both prior conditions. Finally by using the hole model, laboratory observation was modeled in MATLAB environment, the results of which indicate the ability of the model to predict the behavior of system.

Keywords:separation; nitrate salt; polyether sulfone membrane; modeli.