Crossflow Filtration of Sodium Chloride Solution by A Polymeric Nanofilter: Minimization of Concentration Polarization by a Novel Backpulsing Method

Document Type: Research Article


1 Membrane Laboratory, Academic Center for Education, Culture and Research (ACECR), Tehran, I.R. IRAN

2 Surface phenomena and Liquid-liquid Extraction Research Laboratory, University of Tehran, Tehran, I.R. IRAN

3 School of Chemical Engineering, College of Engineering, University of Tehran, Tehran, I.R. IRAN

4 Department of Chemical Engineering, Faculty of Engineering, Ferdowsi University of Mashhad, Mashhad, I.R. IRAN


In the present study, the production of low-salt water from salty water by nanofiltration as well as membrane fouling was investigated. Furthermore, a new method was proposed and tested experimentally for creating the backpulse in order to minimization of fouling and increase of the filtration efficiency. In the proposed method, the permeate was used instead of gas for creating the backpulse. To test the quality of this method, experiments were conducted using NaCl solution.
In these experiments, the backpulse interval was changed and in constant backpulse duration, the effect of this parameter on the permeate flux was investigated. The results confirmed the effectiveness of the proposed system, especially when the concentration of the saline solution was increased.



Main Subjects

[1] Ravanchi M.T., Kaghazchi T., Kargari A., Application of Membrane Separation Processes in Petrochemical Industry:a Review, Desalination, 235: 199-244 (2009).

[2] Alzahrani S., Mohammad A.W., Hilal N., Abdullah P., Jaafar O., Comparative Study of NF and RO Membranes in the Treatment of Produced Water—Part I: Assessing Water Quality, Desalination, 315: 18-26 (2013).

[3] Khalik A., Praptowidodo V.S., Nanofiltration for Drinking Water Production from Deep Well Water, Desalination, 132: 287-292 (2000).

[4] Sondhi R., Bhave R., Role of Backpulsing in Fouling Minimization in Crossflow Filtration with Ceramic Membranes, Journal of Membrane Science, 186: 41-52 (2001).

[5] Sondhi R., Lin Y.S., Alvarez F., Crossflow Filtration of Chromium Hydroxide Suspension by Ceramic Membranes: Fouling and Its Minimization by Backpulsing, Journal of Membrane Science, 174: 111-122 (2000).

[6] McAlexander B. L., Johnson D.W., Backpulsing Fouling Control with Membrane Recovery of Light Non-Aqueous Phase Liquids, Journal of Membrane Science, 227: 137-158 (2003).

[7] Ma H., Hakim L.F., Bowman C.N., Davis R.H., Factors Affecting Membrane Fouling Reduction by Surface Modification and Backpulsing, Journal of Membrane Science, 189: 255-270(2001).

[8] Ma H., Bowman C.N., Davis R.H., Membrane Fouling Reduction by Backpulsing and Surface Modification, Journal of Membrane Science, 173: 191-200 (2000).

[9] Emma Larsson, “Microfiltration of Milk with Backpulsing”, Tetra Pak Processing Systems AB, Lund, Sweden, February (2011).

[11] Gramms L.C., Bowman R.W., Craycraft R.R., Backpulse Piston Assembly for Crossflow Filters, USP 5512167, (1996).

[12] Baker R.W., "Membrane Technology and Application"s, Wiley, , ISBN 0470854456 , p. 165 (2004).

[13] Prisciandaro  M., Mazziotti di Celso G., Back-Flush Effects on Superficial Water Ultrafiltration, Desalination, 256: 22–26 (2010).

[14] Bohdziewicz J., Bodzek M., Wqsik E., The Application of Reverse Osmosis and Nanofiltration to the Removal of Nitrates from Groundwater, Desalination, 121: 139-147 (1999).  

[15] Ku Y., Lee P., Wang W., Removal of Acidic Dyestuffs in Aqueous Solution by Nanofiltration, Journal of Membrane Science, 250: 159–165(2005).

[16] Amini M., Arami M., Mahmoodi N.M., Akbari A., Dye Removal from Colored Textile Wastewater Using Acrylic Grafted Nanomembrane, Desalination, 212 (2010).

[18] El Rayess Y., Albasi C., Bacchin P., Taillandier P., Raynal J., Mietton-Peuchot M., Devatine A., Cross-Flow Microfiltration Applied to Oenology: A Review, Journal of Membrane Science, 382: 1-19 (2011).

[19] Robert Field, "Fundamentals of Fouling, Membranes for Water Treatment": Volume 4, WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim (2010).

[20] Cui Z.F., Muralidhara H.S., “Membrane Technology: A Practical Guide to Membrane Technology and Applications in Food and Bioprocessing”, Utterworth-Heinemann, (2010).