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In a context of ever-growing electricity consumption and need for less polluting sources of energy, salinity gradient power (SGP) based on osmosis is a promising technology. Salinity difference between two solutions separated by a semi-permeable membrane leads to the pressure increase. The aim of this study is to find the critical permeability threshold of a membrane for the dimensioning an osmotic power plant. Using Spiegler-Kedem equations, the various fluxes across the membrane have been calculated, and delivered power is explicitly derived in terms of system parameters. A necessary condition for economic viability is that its upper bound is larger than a critical threshold value below which osmotic power plant is not profitable. As it is directly proportional to membrane permeability, fixing the optimal membrane permeability value will in turn enable conceive more efficient membranes specifically made for osmotic energy production, as such membranes do not exist today.
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Banchik, L.D., Sharqawy, M.H., Lienhard, J.H. (2014). Limits of Power Production due to Finite Membrane Area in Pressure Retarded Osmosis, J. Membr. Sci., 468, 81-89.
Bræin, S., Sandvik, Ø.S., Skilhagen, S.E. (2010) .Osmotic Power: from Prototype to Industry–What Will it Take?, Proc. 3rd Intern. Conf. on Ocean Energy, ICOE, Bilbao: Spain.
Cath, T. Y., Elimelech, M., McCutcheon, J. R., Mcginnis, R. L., Achilli, A., Anastasio, D., Brady, A. R., Childress, A. E., Farr, I. V., Hancock, N. T., Lampi, J., Nghiem, L. D., Xie, M. & Yip, N. Yin. (2013). Standard methodology for evaluating membrane performance in osmotically driven membrane processes. Desalination, 312 (N/A), 31-38.
Chen, Y., Setiawan, L., Chou, S., Hu, X., Wang, R. (2016). Identification of Safe and Stable Operation Conditions for Pressure Retarded Osmosis with High-Performance Hollow Fiber Membrane, J. Memb. Sci., 503, pp.90-100.
Chou, S., Wang, R., Fane, A.G. (2013). Robust and High-Performance Hollow Fiber Membranes for Energy Harvesting from Salinity Gradients by Pressure Retarded Osmosis. J. Memb. Sci., 448, 44-54.
Chou, S., Wang, R., Shi, L., She, Q., Tang, C., Fane, A.G. (2012) .Thin-film Composite Hollow Fiber Membranes for Pressure Retarded Osmosis (PRO) Process with High Power Density, J Membrane Sci,, 389, 25-33.
Dechadilok, P., Deen, W.M. (2006). Hindrance Factors for Diffusion and Convection in Pores, Ind. Eng. Chem. Res., 45, 6953–6959.
Dinger, F., Troendle, T., Platt, U. (2012) . Osmotic Power Plants, 3rd Osmosis Membrane Summit, Statkraft, Barcelona: Spain
Helfer, F., Sahin, O., Lemckert, C., Anissimov, Y. (2013). Salinity Gradient Energy: a New Source of Renewable Energy for Australia. Proc. Intern. Conf. of the European Water Resources Association (EWRA), Porto: Portugal.
Helfer, F., Lemckert, C., Anissimov, Y.G. (2014) . Osmotic Power with Pressure Retarded Osmosis: Theory, Performance, and Trends, J. Membranes Science, 453, 337-358.
Hickenbottom, K.L., Vanneste, J., Elimelech, M.A., Cath, T.Y. (2016). Assessing the Current State of Commercially Available Membranes and Spacers for Energy Production with Pressure Retarded Osmosis, Desalination, 389, 108-118.
Kho, J. (2010) .Osmotic Power: A Primer. San Francisco, USA: Kachan & Co.
Kim, Y.C., Elimelech, M. (2013). Potential of Osmotic Power Generation by Pressure Retarded Osmosis Using Seawater as Feed Solution: Analysis and Experiments, J Membrane Sci, 429, 330-337
Kleiterp, R. (2012). The Feasibility of a Commercial Osmotic Power Plant, Master Thesis, Dept of Hydraulic Engineering, Delft University of Technology, Delft:Netherlands.
Kumar, A., Schei, T., Ahenkorah, A., Rodriguez, R.C., Devernay, J.M., Freitas, M., Hall, D., Killingtveit, Å., Liu, Z. (2011). Hydropower, in: Edenhofer, O., Pichs-Madruga, R., Sokona, Y., Seyboth, K., Matschoss, P., Kadner, S., Zwickel, T., Eickemeier, P., Hansen, G., Schlömer, S., Stechow C. (Eds.). IPCC Special Report on Renewable Energy Sources and Climate Change Mitigation. Cambridge and New York, UK &USA: Cambridge Univ. Press.
Lewis, A., Estefen, S., Huckerby, J., Musial, W., Pontes, T., Torres-Martinez, J. (2011). Ocean Energy, in: Edenhofer, O., Pichs-Madruga, R., Sokona, Y., Seyboth, K., Matschoss, P., Kadner, S., Zwickel, T., Eickemeier, P., Hansen, G., Schlömer, S., Stechow C. (Eds.). IPCC Special Report on Renewable Energy Sources and Climate Change Mitigation. Cambridge and New York, UK & USA: Cambridge Univ. Press.
Lin, S.H., Straub, A.P., Elimelech, M. (2014). Thermodynamic Limits of Extractable Energy by Pressure Retarded Osmosis, Energy Environ. Sci., 7, pp.2706-2714.
Loeb, S. (1975). Osmotic Power Plants, Science, 189, 654-655.
Mc Cutcheon, J.R., Elimelech, M.A. (2007) . Modeling Water Flux in Forward Osmosis: Implications for Improved Membrane Design, AIChE J., 53, 1736-1744.
Mishra A. (2013). Osmotic Power–Huge Source of Renewable Energy, Int J Sci Eng Res, 4, 1-6.
Post, J.W. (2009) . Blue Energy: Electricity Production from Salinity Gradients by Reverse Electro-dialysis, PhD thesis, Sub-dept of Environmental Technology, Wageningen University, Wageningen: Netherlands.
She, Q., Wei, J., Ma, N., Sim, V., Fane, A. Rong, G., Wang, R., Tang, C.Y. (2016). Fabrication and Characterization of Fabric-reinforced Pressure Retarded Osmosis Membranes for Osmotic Power Harvesting, J. Memb. Sci., 504, 75-88.
Skilhagen, S.E., Dugstad, J.E., Aaberg R.J. (2012). Osmotic Power - Power Production Based on the Osmotic Pressure Difference between Waters with Varying Salt Gradients, Desalination, 220, 476-482.
Skilhagen, S.E., Aaberg R.J. (2006) . Power Production Based on the Osmotic Pressure Difference between Fresh Water and Sea Water, European Seminar on Offshore Wind and Other Marine Renewable Energies in Mediterranean and European Seas (Owemes), Owemes, Citavecchia: Italy.
Straub, A.P., Deshmukh, A., Elimelech, M. (2016). Pressure-retarded Osmosis for Power Generation from Salinity Gradients: is it Viable? Energy Environ. Sci., 9, 31–48.
Spiegler, K.S., Kedem, O. (1966): Thermodynamics of Hyper-filtration (Reverse Osmosis): Criteria for Efficient Membranes, Desalination, And 1,311-326.
The Salinity Project Group, The Salinity Power Project: Power Production from the Osmotic Pressure Difference between Fresh Water and Sea Water - Final Report, (2004). The European Commission, Bruxelles, Lisbon.
Wang, R., Tang, C., Fane, A.G. (2012). Development of Pressure Retarded Osmosis (PRO) Membranes with High Power Density for Osmotic Power Harvesting, in: 3rd Osmosis Membrane Summit, Statkraft, and Barcelona: Spain.
Yip, N.Y., Tiraferri, A., Phillip, W.A., Schiffman, J.D., Elimelech, M. (2010) . High-Performance Thin-film Composite forward Osmosis Membranes, Environ Sci Technol, 44, 3812-3818.
Yip, N.Y., Elimelech, M. (2012). Thermodynamic and Energy Efficiency Analysis of Power Generation from Natural Salinity Gradients by Pressure Retarded Osmosis, Environ. Sci. Technol., 46, 5230-5239.
Yip, N.Y., Elimelech, M. (2011). Performance Limiting Effects in Power Generation from Salinity Gradients by Pressure Retarded Osmosis, Environ Sci Technol, 45, 10273-10282.
Zhang, S., Chung, T.S. (2013). Minimizing the Instant and Accumulative Effects of Salt Permeability to Sustain Ultrahigh Osmotic Power Density, Environ. Sci. Technol., 47,