Study of the effectiveness of fixed flow-through electrodes

Cœuret, F.; Hutin, D.; Gaunand, Alain

doi:10.1007/bf00616541

Cited by 42 publications

(24 citation statements)

References 10 publications

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“…Coeuret et al [56][57][58] were the first to study and analyse the current and potential distribution in flow through fixed bed by using a mathematical approach similar to that proposed by the chemical engineering discipline for heterogeneous reaction. They represented the current and potential distribution by the following dimensionless relationship:…”

Section: One-dimensional Modelmentioning

confidence: 99%

Scale-Up of Electrochemical Reactors

Sulaymon¹,

Abbar²

2012

Electrolysis

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Section: One-dimensional Modelmentioning

confidence: 99%

Scale-Up of Electrochemical Reactors

Sulaymon¹,

Abbar²

2012

Electrolysis

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“…The cell, typically having an electrolyte capacity of 267 cm 3 , has a trapezoidal cross-section with a rectangular side of 7?3 cm length (where the anode was placed) and an oblique side of 10?6 cm length (where the working electrode was located). The longest distance between the anode and cathode sides was 13?7 cm, while the shortest distance was 5?3 cm.…”

Section: Experimental Hull Cellmentioning

confidence: 99%

“…[1][2][3] Cell design and construction requires careful attention to electrode geometry in order to achieve optimal current and potential distributions. In metal deposition, inadequate consideration of cell geometry could lead to a non-uniform deposit thickness composition.…”

Section: Introductionmentioning

confidence: 99%

Copper deposition at segmented, reticulated vitreous carbon cathode in Hull cell

Tangirala

Low

Ponce-de-León

et al. 2010

Transactions of the IMF

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The electrodeposition of copper from an acid sulphate solution has been studied in a Hull cell fitted with four types of cathode; a carbon plate or a reticulated vitreous carbon (RVC) sheet was used either in a continuous or segmented form. The rates of mass transport to the planar plate and RVC electrodes have been compared in static and stirred electrolytes containing 50, 75 and 100 mmol dm 23 CuSO 4 in 0?5 mol dm 23 Na 2 SO 4 at pH 2 and 298 K. The cathodes were divided into 10 equal sections and current vs. potential curves were obtained for each section at a constant current up to 140 mA. The current distribution over the cathodes followed a logarithmic decay with distance along the cathode; segments nearest to the anode experienced the highest rate of copper deposition.

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“…Laboratory-scale undivided cells have been used for studying mass transfer effects on porous electrodes [1][2] while other reactors have been employed for the destruction of pollutants from industrial wastewaters [3][4][5][6][7], such as textile effluents [7]. In addition, an undivided reactor has been used for a flowing soluble lead battery application [8].…”

Section: Introductionmentioning

confidence: 99%

“…Membrane-free electrochemical reactors have been studied extensively [1][2][3][4][5][6][7][8]. Laboratory-scale undivided cells have been used for studying mass transfer effects on porous electrodes [1][2] while other reactors have been employed for the destruction of pollutants from industrial wastewaters [3][4][5][6][7], such as textile effluents [7].…”

Section: Introductionmentioning

confidence: 99%

A membrane free electrochemical cell using porous flow-through graphite felt electrodes

2008

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This work describes the development and characterisation of an electrochemical cell which can be used to give high reactant conversion without the need for a membrane. The undivided cell uses two high porosity flowthrough graphite felt electrodes, with the products flowing through the back of each electrode. A series of tests have been conducted using an equimolar mixture of potassium hexacyanoferrate (II) and potassium hexacyanoferrate (III) to characterise the cell design and identify suitable operating conditions. It has been shown that high reactant conversion (in excess of 90%) can be achieved for high concentrations of redox species at low flow rates (superficial velocities of around 0.1 mm s -1 ). However, the cell voltage required to achieve high conversions increased with increasing concentration. Keywords Undivided cell Á Flow-through electrodes Á Redox species Á Potassium hexacyanoferrate (II) Á Potassium hexacyanoferrate (III) Nomenclature a Specific surface area (m 2 m -3 ) C 0 Feed concentration (mol dm -3 ) C 0 Outlet concentration (mol dm -3 ) E cell Cell potential (V) F Faraday constant (96,487 C mol -1 ) I Cell current (A) k m Mass transport coefficient (m s -1 ) L Porous electrode thickness (m) L a Active electrode thickness (m) n Number of electrons transferred per mole of reactants Q Volumetric flow rate of electrolyte (cm 3 s -1 ) Re Reynolds number u Mean flow velocity (m s -1 ) V Total volume of electrolyte reacted (m 3 ) W.E Working electrode X Reactant conversionGreek symbols a = k m a/u (m -1 ) / Current efficiency j Electrolyte conductivity (S m -1 )

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Study of the effectiveness of fixed flow-through electrodes

Cited by 42 publications

References 10 publications

Scale-Up of Electrochemical Reactors

Scale-Up of Electrochemical Reactors

Copper deposition at segmented, reticulated vitreous carbon cathode in Hull cell

A membrane free electrochemical cell using porous flow-through graphite felt electrodes

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