Forward-Reverse Osmosis Processes for Oily Wastewater Treatment
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Abstract
In this study, the feasibility of Forward–Reverse osmosis processes was investigated for treating the oily wastewater. The first stage was applied forward osmosis process to recover pure water from oily wastewater. Sodium chloride (NaCl) and magnesium chloride (MgCl2) salts were used as draw solutions and the membrane that was used in forward osmosis (FO) process was cellulose triacetate (CTA) membrane. The operating parameters studied were: draw solution concentrations (0.25 – 0.75 M), oil concentration in feed solution (FS) (100-1000 ppm), the temperature of FS and draw solution (DS) (30 - 45 °C), pH of FS (4-10) and the flow rate of both DS and FS (20 - 60 l/h). It was found that the water flux and oil concentration in FS increase by increasing the concentration of draw solutions, the flow rate of FS and the temperature for a limit (40oC), then, the water flux and oil concentration decrease with increasing the temperature because of happening the internal concentration polarization phenomenon. By increasing the oil concentration in FS and the flow rate of the DS, the water flux and oil concentration in FS decreased, while it had a fluctuated behavior with increasing pH
of oily wastewater. It was found also that MgCl2 gives water flux higher than NaCl. So the values of resistance to solute diffusion within the membrane porous support layer were 55.93 h/m and 26.21 h/m for NaCl and MgCl2 respectively. The second stage was applied reverse osmosis process using polyamide (thin film composite (TFC)) membrane for separating the fresh water from a diluted (NaCl) solution using different parameters such as draw solution concentration (0.08–0.16 M), feed flow rate (20–40 l/h).
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Achilli, A., Cath, T.Y., and Childress, A.E., 2010, Selection of inorganic-based draw solutions for forward osmosis applications, Journal of Membrane Science, Vol. 364: 233–241.
Achilli, A., Cath, T.Y., Childress, A.E., 2009, Power generation with pressure retarded osmosis: An experimental and theoretical investigation”, Journal of Membrane Science, Vol. 343: 42-52.
Ahmed, F. H., 2007, Performance of Manipulated Direct Osmosis in Water Desalination Process Ph.D. thesis, Baghdad University.
Ahmed, F. H., 2011, Forward and Reverse Osmosis Process for Recovery and Re-use of Water from Polluted Water by Phenol, Journal of Engineering, Vol. 17, No. 4: 912- 928.
Alsvik, I. L., and Hägg, M-B., 2013, Pressure Retarded Osmosis and Forward Osmosis Membranes: Materials and Methods, Polymers, Vol. 5: 303-327.Alturki, A., 2013, Removal of trace organic contaminants by integrated membrane processes for indirect potable water reuse applications, Ph. D thesis, University of Wollongong.
Aydiner, C., Topcu, S., Tortop, C., Kuvvet, F., Ekinci, D., Dizge, N., and Keskinler, B., 2012, A novel implementation of water recovery from whey: Forward–reverse osmosis” integrated membrane system”, Desalination and Water Treatment iFirst: 1–14.
Bamaga, O.A. , Yokochi, A. , Zabara, B. , and Babaqi, A.S. , 2011, Hybrid FO/RO desalination system: Preliminary assessment of osmotic energy recovery and designs of new FO membrane module configurations, Desalination 268 (2011) 163–169.
Bujang, M., Ibrahim, N. A., and a/l Eh Rak, A., 2012, Physicochemical Quality of Oily Wastewater from Automotive Workshop in Kota Bharu, Kelantan Malaysia, Australian Journal of Basic and Applied Sciences, Vol. 6, No. 9: 748-752.
Cath, T.Y., Childress, A.E., and Elimelech, M., 2006, Forward Osmosis: Principles, Applications, and Recent Developments”, Journal of Membrane Science, Vol. 281: 70–87.
Cheryana, M., and Rajagopalan, N., 1998, Membrane processing of oily streams. Wastewater treatment and waste reduction, Journal of Membrane Science, Vol. 151:13-28.
Choi, J., 2011, Efficient production and application of volatile fatty acids from biomass for fuels and chemicals,Ph.D. thesis, Kaist University.
Digman, B.R., 2010, Surface Modification of Polybenzimidizole Membranes for Forward Osmosis, M. Sc. thesis, The University of Toledo.
Farah, A. Y., 2013 Application of Forward Osmosis Process in Whey Treatment, M.Sc. thesis, University of Baghdad.
Gray, G.T., McCutcheon, J.R., and Elimelech, M., 2006, Internal concentration polarization in forward osmosis: role of membrane orientation, Desalination, Vol. 197: 1–8.
Hua, F.L., Tsang, Y.F., Wang, Y.J., Chan, S.Y., Chua, H., and Sin, S.N., 2007, Performance study of ceramic microfiltration membrane for oily wastewater treatment, Chemical Engineering Journal, Vol. 128:169–175.
Kim, C., Lee, S., Shon, H.K., Elimelech, M., and Hong, S., 2012, Boron transport in forward osmosis: Measurements, mechanisms, and comparison with reverse osmosis”, Journal of Membrane Science 419–420: 42–48. Loeb, S., Titelman, L., Korngold, E., and Freiman, J., 1997, Effect of porous support fabric on osmosis through a Loeb-Sourirajan type asymmetric membrane, Journal of Membrane Science, Vol. 129: 243–249.
McCutcheon, J.R. and Elimelech, M., 2006, Influence of concentrative and dilutive internal concentration polarization on flux behavior in forward osmosis, Journal of Membrane Science, Vol. 284: 273-247.
Mohammed, S.A., Faisal, I., and Alwan, M.M., 2011, Oily Wastewater Treatment Using Expanded Beds of Activated Carbon and Zeolite, Iraqi Journal of Chemical and Petroleum Engineering, Vol.12 No.1.
Shamel, M.M., and Chung, O.T., 2006, Drinking Water from Desalination of Seawater: Optimization of Reverse Osmosis System Operating Parameters, Journal of Engineering Science and Technology, Vol. 1, No. 2: 203-211.
Thain, J.F., 1967, Principles of Osmotic Phenomena", W Heffer & Sons Ltd, London.
Xie, M., Price, W. E. and Nghiem, L. D., 2012, Rejection of pharmaceutically active compounds by forward osmosis: Role of solution pH and membrane orientation, Separation and Purification Technology, Vol. 93: 107-114.
Yan, L., Li, Y.S., Xiang, C.B., and Hong, L.J., 2006, Treatment of oily wastewater by organic–inorganic composite tubular ultrafiltration (UF) membranes, Desalination, Vol. 196: 76–83.
Zhao, S., Zou, L., 2011, Effects of working temperature on separation performance, membrane scaling and cleaning in forward osmosis desalination, Desalination, Vol. 278: 157–164.