Eco-Technical Evaluation and Optimum Operating Condition of Two Commercial Nanofiltration Membrane in Nitrate Rejection of under Groundwater

Document Type : Research Article


Faculty of Chemical Engineering, Isfahan University of Technology, Isfahan, I.R. IRAN


Preparation of a modified process specification is a key factor to reduce the process costs, especially in membrane water purification processes. The feed pressure is one of the most important operating parameters in this case. The aim of the present study is to investigate nitrate removal from underground water using nanofiltration (NF) membranes. In this regard, the optimum operating parameters of two FilmTech made commercial nanofiltration membranes, NF90 and NF270 have been defined. Verberne's economical model has been used to find the optimum operating parameters. The obtained results revealed higher nitrate rejection (about more than 30%) of NF90 in comparison to NF270, while its water flow rate was about half of NF270. The obtained optimum feed pressure for NF90 and NF27 were 8 and 6 bar respectively. In optimum operating conditions, the water purification cost was obtained 0.144 USD and 0.12 USD for NF90 and NF270 respectively.


Main Subjects

[2] مشتاق، بهاره؛ برقعی، سید مهدی؛ شادبهر، جلیل؛ مقایسه عملکرد سامانه تلفیقی راکتور زیست فیلمی با بستر متحرک مجهز به جدا کننده غشایی، با راکتور زیست فیلمی با بستر متحرک معمولی MBBR، نشریه شیمی و مهندسی شیمی ایران، (2)32: 83تا 91 ( 1392).
[3] Yeh  H.H., Tseng  I.C., Kao  S.J., Lai  W.L., Chen J.J., Wang G.T., Lin S.H.,  Comparison of the Finished Water Quality Among an Integrated Membrane Process, Conventional and other Advanced Treatment Processes, Desalination, 131: 237-244 (2000).
[4] چوپانی، مرضیه؛ باقریان، فاطمه؛ کربمی، مرضیه؛ غفارزادگان، رضا؛ تغلیط عصاره بابونه آلمانی (Matricaria chamomilla) به وسیله غشای نانو فیلتراسیون، نشریه شیمی و مهندسی شیمی ایران، (4)35: 63تا 70 ( 1395).
[5] Hilal N., A1-ZoubP H., Darwish N.A., Mohammad A.W., Abu Arabi M., A comprehensive Review of Nanofiltration Membranes: Treatment, Pretreatment, Modelling, and Atomic Force Microscopy, Desalination, 170: 281-308 (2004).
[6] Taylor  J. S., Mulford  L. A., Duranceau  S.J., Barrett W.M., Cost and Performance of a Membrane Pilot Plant, Journal of American Water Works Association, 81: 52-60(1989).
[7] Dunkelberger G. W., Taylor J. S., “Cost Optimization Model for Low Pressure Membrane Applications”, Proc. of the American Water Works Association Membrane Processes Conf., American Water Works Association, Orlando, Fla., pp. 63-78 (1991).
[8] Fuqua T., Ortiz R., Bowen P., Creighton R., “Membrane Treatment and the use of the Floridan Aquifer in South Florida”, Proc. of the American Water Works Association Membrane Processes Conf., Orlando, Fla., pp. 649-663 (1991).
[9] Suratt W. G., “Estimating the Costs of Membrane Water Treatment Plants”, Prociding of the American Water Works Association Membrane Processes Conf., Orlando, Fla., pp. 631-647 (1991).
[10] Luitweiler J.P., Yohe T.L., Crist  E., Sun X., ”Performance Testing Of Hollow Fiber Membranes on a Groundwater”, Proc. of the American Water Works Association Membrane Processes Conf., Orlando, Fla.(1991).
[11] Pickering  K., Wiesner  M., Cost Model for Low-Pressure Membrane FiltrationJ. Environmental Engineering, 119: 772-797 (1993).
[13] Van der Bruggen B., Everaert K., Wilms D., Vandecasteele C., Application of Nanofiltration for Removal of Pesticides, Nitrate and Hardness from Ground Water: Rejection Properties and Economic Evaluation, Journal of Membrane Science, 193: 239–248 (2001).
[14] Nora’aini A., A. Wahab M., Ahmad A.L., Use of Nanofiltration Predictive Model for Membrane Selection and System Cost Assessment, Separation & Purification Technology, 41: 29–37 (2005).
[15] Mohammad W., Nora'aini A., Ahmad A.L., Nidal H., Optimized Nanofiltration Membranes: Relevance to Economic Assessment and Process Performance, Desalination, 165: 243-250 (2004).
[16] Mohammad A.W., Hilal N., H., Al-Zoubi Darwish N.A., Ali N., Modelling the Effect of Nanofiltration Membrane Properties on System Cost Assessment for Desalination Applications, Desalination, 206: 215-225 (2007).
[17] Santafe-Moros J.M., Goza lvez-Zafrilla J. Lora-Garcia, Performance of Commercial Nanofiltration Membranes in the Removal of Nitrate Ions, Desalination 185: 281–287 (2005).