Sustainable Desalination and Water Reuse

Hoek, Eric M.V.; Jassby, David; Kaner, Richard B.; Wu, Jishan; Wang, Jingbo; Liu, Yiming; Rao, U. R. K.

doi:10.1007/978-3-031-79508-4

Cited by 1 publication

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“…The AMS effect is quite general and should extend beyond electrochemical applications. Given a suitable membrane, in principle, the AMS should be able to separate or concentrate many species of interest, perhaps aiding such processes as the desalination of seawater [47,48] or the recovery of metals from waste water streams [49]. Again, note that AMS-mediated separation is energy neutral, relying on passive molecular diffusion, and thus on the thermal energy of its environment rather than on an external free energy source as is required, say, by reverse osmosis in desalination [47,48].…”

Section: Amcc Energy and Power Densitymentioning

confidence: 99%

A Self-Charging Concentration Cell: Theory

Sheehan

2023

Batteries

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Batteries are a key resource in the quest for sustainable energy. Here, the theoretical basis is presented for a new type of electrochemical concentration cell that might contribute to this enterprise. The cell, which has been successfully demonstrated in the laboratory, incorporates a chemically asymmetric membrane to drive anisotropic diffusion between two solution chambers; the resulting concentration difference powers the cell. In this study, the membrane’s operation is validated via three theoretical approaches: (i) traditional equilibrium thermodynamics; (ii) balancing drift and diffusion current densities; and (iii) the time-independent diffusion equation. The physical criteria for its operation are developed and its dimensionless variables identified. The cell’s maximum instantaneous power density might exceed 107 W/m3. Its self-charging capability should confer multiple advantages over traditional concentration cells (as well as over some voltaics), including improved thermodynamic efficiency, economy, and compactness. Commonalities with other electrochemical systems (e.g., liquid chromatography, metal corrosion, and solid state diodes) are discussed, and a physical instantiation of the cell is reviewed. Recent numerical simulations corroborate its essential processes.

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Section: Amcc Energy and Power Densitymentioning

confidence: 99%

A Self-Charging Concentration Cell: Theory

Sheehan

2023

Batteries

View full text Add to dashboard Cite

show abstract

Sustainable Desalination and Water Reuse

Cited by 1 publication

References 335 publications

A Self-Charging Concentration Cell: Theory

A Self-Charging Concentration Cell: Theory

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