Assessing the behavior of the feed-water constituents of a pilot-scale 1000-cell-pair reverse electrodialysis with seawater and municipal wastewater effluent

Nam, Joo-Youn; Hwang, Kyo-Sik; Kim, Hyun-Chul; Jeong, Haejun; Kim, Han−Ki; Jwa, Eunjin; Yang, SeungCheol; Choi, Jiyeon; Kim, Chan-Soo; Han, Ji-Hyung; Jeong, Namjo

doi:10.1016/j.watres.2018.10.054

Cited by 93 publications

(46 citation statements)

References 39 publications

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“…Flow dynamics have a substantial impact on power density results leading to the development of turbulence-inducing woven spacers [ 260 , 261 ]. Furthermore, membrane permselectivity has proven to be another critical factor for RED, since divalent cations can greatly affect the power capacity causing an efficiency drop and increasing the membrane resistance by possible scaling [ 261 , 262 , 263 ]. The development of monovalent permselective membranes based on charge repulsion or steric exclusion as well as the better understanding of scaling mechanisms, especially in relation to the pH, paves the way toward improved more viable performances [ 85 , 263 , 264 , 265 , 266 ].…”

Section: Recent Technological Developments Based On Ed Membrane Phmentioning

confidence: 99%

“…Another pilot plant was established in The Netherlands (Blue Energy project) aiming for an overall capacity of 50 kW while the next stage would be a demo pilot up to 2 MW [ 270 ]. More recently, a pilot plant in South Korea exhibiting 1000 cell pairs for a total membrane surface of 250 m² managed a power density of 0.38 W/m² using seawater and wastewaters [ 262 ]. Gómez-Coma et al [ 271 ] implemented a 20-day RED experiment with power densities up to 1.4 W/m².…”

Section: Recent Technological Developments Based On Ed Membrane Phmentioning

confidence: 99%

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Electrodialytic Processes: Market Overview, Membrane Phenomena, Recent Developments and Sustainable Strategies

Bazinet

Geoffroy

2020

Membranes

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In the context of preserving and improving human health, electrodialytic processes are very promising perspectives. Indeed, they allow the treatment of water, preservation of food products, production of bioactive compounds, extraction of organic acids, and recovery of energy from natural and wastewaters without major environmental impact. Hence, the aim of the present review is to give a global portrait of the most recent developments in electrodialytic membrane phenomena and their uses in sustainable strategies. It has appeared that new knowledge on pulsed electric fields, electroconvective vortices, overlimiting conditions and reversal modes as well as recent demonstrations of their applications are currently boosting the interest for electrodialytic processes. However, the hurdles are still high when dealing with scale-ups and real-life conditions. Furthermore, looking at the recent research trends, potable water and wastewater treatment as well as the production of value-added bioactive products in a circular economy will probably be the main applications to be developed and improved. All these processes, taking into account their principles and specificities, can be used for specific eco-efficient applications. However, to prove the sustainability of such process strategies, more life cycle assessments will be necessary to convince people of the merits of coupling these technologies.

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Section: Recent Technological Developments Based On Ed Membrane Phmentioning

confidence: 99%

Section: Recent Technological Developments Based On Ed Membrane Phmentioning

confidence: 99%

Electrodialytic Processes: Market Overview, Membrane Phenomena, Recent Developments and Sustainable Strategies

Bazinet

Geoffroy

2020

Membranes

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“…Higher values of P d,max , i.e., up to 0.38 W/m 2 , were obtained by testing a pilot plant [ 428 ]. The WWTP effluent was treated by dual-media filtration, bag filter (50 μm) and cartridge filters (5 μm), while the seawater underwent only the 5 μm filtration.…”

Section: Municipal Wastewater and Other Effluentsmentioning

confidence: 99%

Electrodialysis Applications in Wastewater Treatment for Environmental Protection and Resources Recovery: A Systematic Review on Progress and Perspectives

et al. 2020

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This paper presents a comprehensive review of studies on electrodialysis (ED) applications in wastewater treatment, outlining the current status and the future prospect. ED is a membrane process of separation under the action of an electric field, where ions are selectively transported across ion-exchange membranes. ED of both conventional or unconventional fashion has been tested to treat several waste or spent aqueous solutions, including effluents from various industrial processes, municipal wastewater or salt water treatment plants, and animal farms. Properties such as selectivity, high separation efficiency, and chemical-free treatment make ED methods adequate for desalination and other treatments with significant environmental benefits. ED technologies can be used in operations of concentration, dilution, desalination, regeneration, and valorisation to reclaim wastewater and recover water and/or other products, e.g., heavy metal ions, salts, acids/bases, nutrients, and organics, or electrical energy. Intense research activity has been directed towards developing enhanced or novel systems, showing that zero or minimal liquid discharge approaches can be techno-economically affordable and competitive. Despite few real plants having been installed, recent developments are opening new routes for the large-scale use of ED techniques in a plethora of treatment processes for wastewater.

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“…We assessed the performance of the up-scaled RED system-i.e., the net power production and net energy recovery of the RED plant-in every scenario, in the process simulation software Aspen Plus ® V11 (AspenTech, Bedford, MA, USA) [60], importing a custom RED stack model implemented in Aspen Custom Modeler ® V11 (AspenTech) [61]. All simulations refer to a commercial RED unit (Fumatech GmbH ® , St. Ingbert, Germany) with an assumed number of cell pairs (cp) representative of industrial-scale stacks reported in the literature (Table 2) [20,62]. Table 2.…”

Section: Estimation Of Red's Technical Performance: Net Power and Spementioning

confidence: 99%

“…RED enables the harnessing of energy from abundant yet largely untapped sources, as industrial effluents, thus providing energy and emission savings from an otherwise waste stream, conforming with the waste-to-wealth concept. Several authors have explored the energy retrieval from desalination concentrate effluents [9,[13][14][15][16][17][18], and secondary treated wastewater effluents [19][20][21][22], which bring higher power densities than the seawater/river water pair widely tested in previous works [19,[23][24][25]. While latest research advances have boosted the maturity level of RED, moving from lab-scale units to up-scaled prototypes and pilot plants [11,26], full-scale RED progress will require further techno-economic and environmental assessments and field demonstrations in industrially relevant environments that prove its practical viability.…”

Section: Introductionmentioning

confidence: 99%

Reverse Electrodialysis: Potential Reduction in Energy and Emissions of Desalination

et al. 2020

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Salinity gradient energy harvesting by reverse electrodialysis (RED) is a promising renewable source to decarbonize desalination. This work surveys the potential reduction in energy consumption and carbon emissions gained from RED integration in 20 medium-to-large-sized seawater reverse osmosis (SWRO) desalination plants spread worldwide. Using the validated RED system’s model from our research group, we quantified the grid mix share of the SWRO plant’s total energy demand and total emissions RED would abate (i) in its current state of development and (ii) if captured all salinity gradient exergy (SGE). Results indicate that more saline and warmer SWRO brines enhance RED’s net power density, yet source availability may restrain specific energy supply. If all SGE were harnessed, RED could supply ~40% of total desalination plants’ energy demand almost in all locations, yet energy conversion irreversibility and untapped SGE decline it to ~10%. RED integration in the most emission-intensive SWRO plants could relieve up to 1.95 kg CO2-eq m−3. Findings reveal that RED energy recovery from SWRO concentrate effluents could bring desalination sector sizeable energy and emissions savings provided future advancements bring RED technology closer to its thermodynamic limit.

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Assessing the behavior of the feed-water constituents of a pilot-scale 1000-cell-pair reverse electrodialysis with seawater and municipal wastewater effluent

Cited by 93 publications

References 39 publications

Electrodialytic Processes: Market Overview, Membrane Phenomena, Recent Developments and Sustainable Strategies

Electrodialytic Processes: Market Overview, Membrane Phenomena, Recent Developments and Sustainable Strategies

Electrodialysis Applications in Wastewater Treatment for Environmental Protection and Resources Recovery: A Systematic Review on Progress and Perspectives

Reverse Electrodialysis: Potential Reduction in Energy and Emissions of Desalination

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