Document Type : Full length

Author

Department of Chemical and Petrochemical Engineering, College of Engineering, University of Anbar, Iraq

Abstract

In this paper, the performance of nanofiltration membrane process in removing Pb(II) from aqueous solution was modeled by the pore flow-concentration polarization model. The model was fabricated based on the simultaneous resolving of Extended Nernst–Planck equation(ENP), film theory, and osmotic pressure model. The effects of various operational parameters such as the applied pressure, feed concentration, and cross-velocity on lead Pb(II) ion rejection and solvent flux were investigated. The applied pressure, feed concentration, and cross-velocity varied between 10-50 bar, 5-15 ppm, and 0.2-1.2 m/s, respectively. It was found that lead rejection increased initially and reached the maximum value; then, it decreased with a further increase in pressure, while solvent flux increased linearly within the whole pressure range. This phenomenon is attributed mainly to the developed concentration polarization layer. This effect was significantly decreased with increasing cross-velocity to 1.2 m/s. Ultimately, the proposed model successfully predicted the filtration process in terms of real and observed rejections as well as solvent flux.

Keywords

Main Subjects

[1]     Gunatilake, S. K., “Methods of removing heavy metals from industrial wastewater”, Journal of Multidisciplinary Engineering Science Studies (JMESS), 1 (1), 12 (2015).
[2]     van der Meer, W. G. J., Averink, C. W. A. and van Dijk, J. C., “Mathematical model of nanofiltration systems”, Desalination, 105, 25 (1996).
[3]     Wiesner, M. R. and Chellam, S., “The promise of membrane technology”, Environ. Sci. Technol., 33 (17), 360A (1999).
[4]     Bian, R., Yamamoto, K. and Watanabe, Y., “The effect of shear rate on controlling the concentration polarization and membrane fouling”, Desalination, 131, 225 (2000).
[5]     Sablani, S. S., Goosen, M. F. A., Al-Belushi, R. and Wilf, M., “Concentration polarization in ultrafiltration and reverse osmosis: A critical review”, Desalination, 141, 269 (2001).
[6]     Fadhil, S., “Performance of nanofiltration membranes on water demineralization assessment and comparative study”, Indian Journal of Chemical Technology,6 (4),178 (2018).
[7]     Algebory, S., Figoli, A., Alsalhy, Q., Alwan, G. and Simone, S., “Polyvinyl alcohol/Polyvinyl chloride (Pva/Pvc) hollow fiber composite nanofiltration membranes for water treatment”, Iraqi Journal of Chemical and Petroleum Engineering, 11 (4), 23 (2010).
[8]     Alsalhy, Q., Algebory, S., Alwan, G., Simone, S. and Figoli, A., “Hollow fiber ultrafiltration membranes from poly (vinyl chloride): Preparation, morphologies, and properties”, Separation Science and Technology, 46 (14), 2199 (2011).
[9]     Gherasim, C. and Mikulášek, P., “Influence of operating variables on the removal of heavy metal ions from aqueous solutions by nanofiltration”, Desalination, 343, 67 (2014).
[10]  Gherasim, C., Cuhorka, J. and Mikulasek, P., “Analysis of lead(II) retention from single salt and binary aqueous solutions by a polyamide nanofiltration membrane: Experimental results and modeling”, Journal of Membrane Science, 436, 132 (2013).
[11]  Mikulášek. P. and Cuhorka, J., “Removal of heavy metal ions from aqueous solutions by nanofiltration”, Chemical Engineering Transaction, 47, 379 (2016).
[12]  Bouranene, S., Fievet, P., Szymczyk, A., Samar, M. and Vidonne, A., “Influence of operating conditions on the rejection of cobalt and lead ions in aqueous solutions by a nanofiltration polyamide membrane", Journal of Membrane Science, 325, 150 (2008).
[13]  Mehdipour, S., Vatanpour, V. and Kariminia, H., “Influence of ion interaction on lead removal by a polyamide nanofiltration membrane”, Desalination, 362, 84 (2015).
[14]  Giacobbo, A., Bernardes, A., Rosa, M. and de Pinho, M., “Concentration polarization in ultrafiltration/ nanofiltration for the recovery of polyphenols from winery wastewaters”, Membranes, 8, 46 (2018).
[15]  Otero-Fernández, A., Otero, J., Maroto-Valiente, A., Calvo, J., Palacio, L., Prádanos, P. and Hernández, A., “Reduction of Pb(II) in water to safe levels by a small tubular membrane nanofltration plant”, Clean Techn. Environ. Policy, 20, 329 (2018).
[16]  Banerjee, P. and De, S., “Steady state modeling of concentration polarization including adsorption during nanofiltration of dye solution", Separation and Purification Technology, 71, 128 (2010).
[17]  Banerjee, P. and De, S., “Coupled concentration polarization and pore flow modeling of nanofiltration of an industrial textile effluent”, Separation and Purification Technology, 73, 355 (2010).
[18]  Yang, G., Xing, W. and Xu, N., “Concentration polarization in spiral-wound nanofiltration membrane elements”, Desalination, 154, 89 (2003).
[19]  Maher, A., Sadeghi, M. and Moheb, A., “Heavy metal elimination from drinking water using nanofiltration membrane technology and process optimization using response surface methodology”, Desalination, 352, 166 (2014).
[20]  Banerjee, P. and De, S., “Modeling of nanofiltration of dye using a coupled concentration polarization and pore flow model”, Separation Science and Technology, 46, 561 (2011).
[21]  Gozálvez-Zafrilla, J. and Santafé-Moros, A., “Nanofiltration modeling based on the extended Nernst-Planck equation  under different physical modes”, Proceedings of The COMSOL Conference, Hannover, Germany, (2008).
[22]  Perez Gonzalez, A., Ibáñez, R., Gómez, P., Urtiaga, A., Ortiz, I. and Irabien, J., “Nanofiltration separation of polyvalent and monovalent anions in desalination brines”, J. of Memeb. Sci., 473, 16 (2015).
[23]  Lakshminarayanaiah, N., Transport Phenomena in Membranes, Academic Press, New York, (1969).
[24]  Foo, K. and Hameed, B., “Insights into the modeling of adsorption isotherm systems", Chem. Eng. J., 156, 2 (2010).
[25]  Peshev, D. and Livingston, A., “OSN designer, a tool for predicting organic solvent nanofiltration technology performance using Aspen One, MATLAB and CAPE OPEN”, Chemical Engineering Science, 104, 975 (2013).
[26]  Rios, G. and Joulie, R., “Investigation of ion separa-tion by microporous nanofiltration membranes”, AIChE J., 42 (9), 2521 (1996).
[27]  De´on, S., Dutournie´, P. and Bourseau, P., “Modeling nanofiltration with Nernst-Planck approach and polarization layer”, AIChE J., 53 (8), 1952 (2007).
[28]  Rafia, N., Beiragh, M. and Babaluo, A., Current trends and future developments on (bio-) membranes, Elsevier, Holland, Chap. 14, (2017).
[29]  Rall, D., Menne, D., Schweidtmann, A., Kamp, J., Kolzenberg, L., Mitsos, A. and Wessling, M., “Rational design of ion separation membranes”, Journal of Membrane Science, 569, 209 (2019).