Salinity gradient energy generation by pressure retarded osmosis: A review

Gonzales, Ralph Rolly; Abdel‐Wahab, Ahmed; Adham, Samer; Han, Dong Suk; Phuntsho, Sherub; Suwaileh, Wafa; Hilal, Nidal; Shon, Ho Kyong

doi:10.1016/j.desal.2020.114841

Cited by 63 publications

(28 citation statements)

References 189 publications

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“…The necessary parameters to apply this model are the membrane water permeability A, the salt permeability B, the transfer coefficients on the feed side k F and on the draw side k D (taken from [18], assuming negligible variation with temperature and viscosity in the operating range of values and hydrodynamic conditions), the solute resistivity K, and the osmotic pressures on the feed and draw sides π D and π F , respectively (see Equations ( 4) and ( 5)). A and B are chosen according to recent research results [19], considering average values of those obtained under similar conditions to the ones in this research.…”

Section: Evaluation Of Power Consumed and Power Producedmentioning

confidence: 99%

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

Salamanca¹,

Álvarez-Silva

Higgins

et al. 2021

Water

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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.

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Section: Evaluation Of Power Consumed and Power Producedmentioning

confidence: 99%

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

Salamanca¹,

Álvarez-Silva

Higgins

et al. 2021

Water

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“…The effect of driving force across the membrane and water flux is thereby decreased [7]. Moreover, a certain amount of salt permeates through the membrane during osmotic operation, affecting the concentration gradient and the extractable power density [4].…”

Section: Pressure Retarded Osmosis Modelmentioning

confidence: 99%

“…Chemical potential energy is increasingly considered a promising RES that can resolve the problems of carbon emissions, air pollution, global energy shortages, and the high price of fossil fuels. Pressure retarded osmosis (PRO) is therefore developed and investigated as a popular clean energy production method using the natural salinity gradient technology to mitigate such phenomena [1][2][3][4]. This sustainable power can be yielded by mixing solutions of two different salt concentrations, such as seawater mixed with fresh river water.…”

Section: Introductionmentioning

confidence: 99%

A Boosted Particle Swarm Method for Energy Efficiency Optimization of PRO Systems

Chen

Gou

2021

Energies

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The analytical solutions of complex dynamic PRO systems pose challenges to ensuring that maximum power can be harvested in stable, rapid, and efficient ways in response to varying operational environments. In this paper, a boosted particle swarm optimization (BPSO) method with enhanced essential coefficients is proposed to enhance the exploration and exploitation stages in the optimization process. Moreover, several state-of-the-art techniques are utilized to evaluate the proposed BPSO of scaled-up PRO systems. The competitive results revealed that the proposed method improves power density by up to 88.9% in comparison with other algorithms, proving its ability to provide superior performance with complex and computationally intensive derivative problems. The analysis and comparison of the popular and recent metaheuristic methods in this study could provide a reference for the targeted selection method for different applications.

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“…The following equation is then derived by integrating the equation regarding the transport of the draw solute across the active layer of the membrane and across the porous support layer in the active layer facing the DS (AL-DS) orientation , where B and S are the solute permeability coefficient and support layer structural parameter of the membrane, respectively. Equation indicates that C Fm is the sum of two terms.…”

Section: Simulationmentioning

confidence: 99%

Simulation of Thermoresponsive Draw Solute-Driven Forward Osmosis for Enhanced Pure Water Production in Seawater Desalination

Kishimoto

Gonzales

Goda

et al. 2021

Ind. Eng. Chem. Res.

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In this study, we developed a novel forward osmosis (FO) simulation method for a multicomponent system (water, NaCl, and thermoresponsive ethylene oxide−propylene oxide-based copolymer draw solute) targeted for direct seawater desalination using a hollow fiber (HF) membrane module. Box complex method was applied to numerically solve the FO simulation model of a three-component system. A good agreement between experimental and simulation results obtained in various operation conditions allowed us to estimate not only the effect of NaCl and draw solution (DS) concentration on the resulting water permeate flow rate but also the osmotic pressure inside and outside of the HF membranes. From the analysis, the HF modules were designed to decrease the dilution of the draw solution (DS) inside the module due to water permeation. We validated the suggestion by simulation of the increase of the water permeation rate in the modified HF modules, which were designed for the smooth flow of the DS to decrease the DS dilution. The simulation was further verified by reasonable results indicating that the decrease of NaCl concentration in the feed water is also effective in increasing the water permeation rate in the current HF module.

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Salinity gradient energy generation by pressure retarded osmosis: A review

Cited by 63 publications

References 189 publications

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

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

A Boosted Particle Swarm Method for Energy Efficiency Optimization of PRO Systems

Simulation of Thermoresponsive Draw Solute-Driven Forward Osmosis for Enhanced Pure Water Production in Seawater Desalination

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