Application of computational fluid dynamics technique in electrodialysis/reverse electrodialysis processes

Gurreri, Luigi; Ciofalo, Michele; Cipollina, Andrea; Tamburini, Alessandro; Micale, Giorgio Domenico Maria

doi:10.1016/b978-0-12-822294-2.00011-4

Cited by 2 publications

(4 citation statements)

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“…On the other hand, energy consumption may increase significantly due to the high electrical resistance. Numerous alternative designs and operational modes have been proposed to improve the process performance, including multi-stage configurations, integrated (electro-)membrane processes (ED-BMED, ED-SWRO [199] and many others), and overlimiting regime operations for electroconvective enhancement of mass transport [180,200]. ED reversal operation, pulsed electric fields, pre-treatment and cleaning procedures can act against fouling, thus preserving or restoring membrane properties.…”

Section: Advances In Science and Technology To Meet Challengesmentioning

confidence: 99%

“…As a generic trade-off between co-ion conductivity and permselectivity for polymers, higher co-ion permeability is intertwined with lower permselectivity. Recent advances in implementing surface modifications [200] and novel membranes [220] can improve properties to increase power density. RED membranes can be synthesized very thin.…”

Section: Advances In Science and Technology To Meet Challengesmentioning

confidence: 99%

“…RED membranes can be synthesized very thin. Mechanical stability for RED membranes is generally not an issue as transmembrane pressure is negligible [200]. Spacers hold the integrity of channels and initiate mixing to avoid concentration polarization.…”

Section: Advances In Science and Technology To Meet Challengesmentioning

confidence: 99%

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2024 roadmap on membrane desalination technology at the water-energy nexus

Politano,

Al-Juboori,

Alnajdi

et al. 2024

J. Phys. Energy

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Water and energy are two strategic drivers of sustainable development, intimately interlaced and vital for a secure future of humanity. Given that water resources are limited, whereas global population and energy demand are exponentially growing, the competitive balance between these resources, referred to as the water-energy nexus – is receiving renewed focus.The desalination industry alleviates water stress by producing freshwater from saline sources, such as seawater, brackish or groundwater. Since the last decade, the market has been dominated by membrane desalination technology, offering significative advantages over thermal processes, such as lower energy demand, easy process control and scale-up, modularity for flexible productivity, and feasibility of synergic integration of different membrane operations. The exciting new frontier of sustainable mining of seawater concentrates is accelerating the appearance of a plethora of innovative membrane materials and methods for brine dehydration and selective extraction of trace ions, although under the sword of Damocles represented by cost feasibility for reliable commercial application. On the other hand, among several emerging technologies, reverse electrodialysis (SGP-RED) was already proven capable – at least at the kW scale–of turning the chemical potential difference between river water, brackish water, and seawater into electrical energy. Efforts to develop a next generation of Ion Exchange Membranes exhibiting high perm-selectivity (especially toward monovalent ions) and low electrical resistance, to improve system engineering and to optimize operational conditions, pursue the goal of enhancing the low power density so far achievable (in the order of a few W per m2).This Roadmap takes the form of a series of short contributions written independently by worldwide experts in the topic. Collectively, such contributions provide a comprehensive picture of the current state of the art in membrane science and technology at the water-energy nexus, and how it is expected to develop in the future

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Section: Advances In Science and Technology To Meet Challengesmentioning

confidence: 99%

Section: Advances In Science and Technology To Meet Challengesmentioning

confidence: 99%

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2024 roadmap on membrane desalination technology at the water-energy nexus

Politano,

Al-Juboori,

Alnajdi

et al. 2024

J. Phys. Energy

View full text Add to dashboard Cite

show abstract

“…Thus, although the longitudinal distribution of electric current in ED stacks is a crucial feature affecting the process performance, only qualitative or fragmentary data are available. Even the easy access to this parameter by modelling tools has been almost ignored [1,70] apart from rare exceptions [12,63,64]. The aim of this work is to provide a first breakthrough towards a more complete quantification and analysis of the current distribution.…”

Section: Introductionmentioning

confidence: 99%