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Performance of Reverse Electrodialysis System for Salinity Gradient Energy Generation by Using a Commercial Ion Exchange Membrane Pair with Homogeneous Bulk Structure
Case Report

Analysis of the Intake Locations of Salinity Gradient Plants Using Hydrodynamic and Membrane Models

1
Institute of Sustainable Processes, University of Valladolid, 47002 Valladolid, Spain
2
Department of Physics and Geosciences, Universidad del Norte, 081007 Barranquilla, Colombia
*
Author to whom correspondence should be addressed.
Academic Editor: Alberto Figoli
Water 2021, 13(9), 1133; https://doi.org/10.3390/w13091133
Received: 26 February 2021 / Revised: 13 April 2021 / Accepted: 14 April 2021 / Published: 21 April 2021
The gain in net power produced by Salinity Gradient plants in river mouths due to the optimal location of water intakes is analysed in this paper. More precisely, this work focuses on stratified river mouths and the membrane-based technology of Pressure-Retarded Osmosis. A methodology for this analysis is proposed and then applied to a case study in Colombia. Temperature, salinity and water discharge data were gathered at the Magdalena river mouth to develop a hydrodynamic model that represents the salinity profile along the river channel. The net power production of a pressure-retarded osmosis plant is then estimated based on the power produced at membrane level, considering different locations for the saltwater and freshwater intakes. The most adequate locations for the intakes are then deduced by balancing higher power production (due to higher salinity differences between the water intakes) with lower pumping costs (due to shorter pumping distances from the intakes). For the case study analysed, a gain of 14% can be achieved by carefully selecting the water intakes. View Full-Text
Keywords: osmotic energy; pressure retarded osmosis; river mouths; renewable energies; estuarine dynamics osmotic energy; pressure retarded osmosis; river mouths; renewable energies; estuarine dynamics
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MDPI and ACS Style

Salamanca, J.M.; Álvarez-Silva, O.; Higgins, A.; Tadeo, F. Analysis of the Intake Locations of Salinity Gradient Plants Using Hydrodynamic and Membrane Models. Water 2021, 13, 1133. https://doi.org/10.3390/w13091133

AMA Style

Salamanca JM, Álvarez-Silva O, Higgins A, Tadeo F. Analysis of the Intake Locations of Salinity Gradient Plants Using Hydrodynamic and Membrane Models. Water. 2021; 13(9):1133. https://doi.org/10.3390/w13091133

Chicago/Turabian Style

Salamanca, Jacobo M., Oscar Álvarez-Silva, Aldemar Higgins, and Fernando Tadeo. 2021. "Analysis of the Intake Locations of Salinity Gradient Plants Using Hydrodynamic and Membrane Models" Water 13, no. 9: 1133. https://doi.org/10.3390/w13091133

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