A.R Ghahremanfard - Department of Chemical Engineering Isfahan University of Technology, Isfahan, Iran
M Sadeghi - Department of Chemical Engineering, Isfahan University of Technology, Isfahan, Iran
A Moheb - Department of Chemical Engineering, Isfahan University of Technology, Isfahan, Iran
M Hesampour - Department of Chemical Engineering Isfahan University of Technology, Isfahan, Iran

increasing the amount of the nitrate and salt concentration in many drinking water resources at the world due to agricultural and industrial activities is a new problem inwater purification industries. In this paper the effect of pressure on nitrate and salt removal by one commercial nanofilteration membrane was evaluated. Results show that permeate flux values increased linearly with increasing pressure. Also results indicate more removal rate of salt and nitrate with pressure