Local mass transport effects in the FM01 laboratory electrolyser

Brown, Carolyn J.; Pletcher, Derek; Walsh, Frank C.; Hammond, J. K.; Robinson, David B.

doi:10.1007/bf01092609

Cited by 106 publications

(74 citation statements)

References 11 publications

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“…The cell has a projected single electrode area of 16 Â 4 cm filled with a routed-type polymer turbulence promoter in the electrolyte channel. The characteristics of this type of turbulence promoter and the cell characterisation for the standard reaction of the reduction of the ferricyanide ion at nickel electrodes have been described in detail by Brown et al (1992Brown et al ( , 1994Brown et al ( , 1995 and by Ralph et al (2005). A cation exchange membrane (Nafion 415) was used in the divided configuration to separate anolyte from catholyte.…”

Section: Electrochemical Cellmentioning

confidence: 99%

The use of electrolyte redox potential to monitor the Ce(IV)/Ce(III) couple

Trinidad

León

Walsh

2008

Journal of Environmental Management

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Mathematical modelling of the oxidation reduction redox potential (ORP) of an electrolyte has been carried out for a batch system comprising an electrochemical reactor and an electrolyte circuit containing a redox couple. The ORP can be useful to monitor the environmental impact of chemical species in solution that represent a risk to the environment. Considerations of four fundamental equations, namely, the Nernst equation, a mass balance, Faraday's laws of electrolysis and a first order kinetic equation, leads to an expression for the electrolyte redox potential as a function of the batch time, the electrical charge and the redox concentration. Such an expression facilitates graphical plots which can be used to estimate kinetic parameters, current efficiency and the relative redox concentration. The Ce(IV)/Ce(III) system has been chosen as a model reaction for electrolyte redox potential measurement in a batch recycle system consisting of a pumped flow through a divided FM01-LC parallel-plate electrochemical reactor (64 cm 2 projected electrode area) and a well mixed tank (3600 cm 3 ). The differences between experimental and model predictions are discussed. r

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Section: Electrochemical Cellmentioning

confidence: 99%

The use of electrolyte redox potential to monitor the Ce(IV)/Ce(III) couple

Trinidad

León

Walsh

2008

Journal of Environmental Management

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“…Fluid flow and local mass transport effects in the FM01-LC cell has been investigated by Brown et al [10] in the case of cupric ions reduction to copper using copper-printed segmented electrodes in the longitudinal or transverse directions. Experiments were carried out under laminar inflow conditions, in the range 212 < Re < 855, in a single compartment cell.…”

Section: Simplifying Assumptionsmentioning

confidence: 99%

Hydrogen production by the Westinghouse cycle: modelling and optimization of the two-phase electrolysis cell

Charton¹,

Rivalier²,

Ode³

et al. 2009

WIT Transactions on Engineering Sciences

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Hydrogen is currently viewed as a promising energy carrier for transportation applications. In this context, mass production of hydrogen is a major issue for the coming decades. Among the viable production processes, the hybrid sulphur cycle, or Westinghouse cycle, is studied by the Nuclear Energy Division of the French CEA. In this work, the influence of H 2 bubbles on the current distribution within the electrolyser is studied. Turbulent two-phase flow simulations are performed with Ansys-Fluent CFD code in the 3D calculation domain using an Euler-Euler model. The electrokinetic problem is solved in the same domain by a finite element code, Flux-Expert, which is able to compute the secondary current distribution by means of specific interfacial elements. Parameters including the cell orientation (vertical or horizontal electrode), flow regime and bubble size are investigated, and the current model development status and needs are discussed.

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“…In practice, a plastic mesh can be used as turbulence promoter to homogenize flow pattern and improve mass transport in filter-press type reactors with parallel plate electrodes; experimental studies of mass transport showing the influence of different plastic mesh arrangements has been reported [34].…”

Section: Cell Division and Turbulence Promotersmentioning

confidence: 99%

“…Because the complexity of obtain local flow variations and mass transport coefficients, by means of CFD in complex configurations, it is necessary to establish experimental correlations that can describe global predictions about particular configurations in filter-press FM01-LC reactor. Several studies on experimental characterization have been published and these can be divided into non-ideal flow [32,47,48], mass transport characterization [34,38,40] and the effect of potential distribution on the limiting current density [49].…”

Section: Experimental Studies Of Flow and Mass Transfermentioning

confidence: 99%

“…Experimental measurements can include: a limiting current, hence mass transfer coefficient for a model reaction under convective-diffusion control as a function of linear flow velocity of electrolyte past the electrode surface [34,39]. b pressure drop across the flow channel as a function of linear flow velocity of electrolyte past the electrode surface [40].…”

Section: Experimental Studies Of Flow and Mass Transfermentioning

confidence: 99%

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The filter-press FM01-LC laboratory flow reactor and its applications

Rivera

León

Nava

et al. 2015

Electrochimica Acta

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Keywords: electrolyser energy storage environmental remediation FM01-LC mass transport metal ion removal inorganic and organic electrosynthesis water treatment A B S T R A C T The FM01-LC is a laboratory-scale, electrochemical filter-press cell with a projected electrode area of 64 cm 2 and a rectangular electrolyte flow channel which was originally based on the larger FM21-SP electrolyser of 2100 cm 2 projected electrode area designed for the chlor-alkali industry then diversified to other applications. Many laboratories and industries have utilised this type of controlled flow reactor containing plane parallel electrodes in a rectangular channel for industrial and commercial applications. The diverse range of electrodes possible in such cells is emphasized with examples including 3-D metals and carbon, coated metal electrodes and nanostructured surfaces offering a high surface area. The experimental characterization and computational modelling of its reaction environment are concisely described discussed to appreciate the features of this type of electrochemical reactor. The cell construction and reaction environment are summarized, followed by an illustration of its use for a range of applications that include organic and inorganic electrosynthesis, metal ion removal, energy storage, environmental remediation (e.g., precious metal recycling or anodic destruction of organics) and drinking water treatment. Examples of the cell for energy conversion and storage (flow batteries and proton exchange membrane fuel cells) are briefly illustrated. The use of such a flow cell for the characterization of new electrochemical processes and to provide data enabling scale-up is considered.

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Local mass transport effects in the FM01 laboratory electrolyser

Cited by 106 publications

References 11 publications

The use of electrolyte redox potential to monitor the Ce(IV)/Ce(III) couple

The use of electrolyte redox potential to monitor the Ce(IV)/Ce(III) couple

Hydrogen production by the Westinghouse cycle: modelling and optimization of the two-phase electrolysis cell

The filter-press FM01-LC laboratory flow reactor and its applications

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