Chlorate electrosynthesis current efficiency equations based on dimensionless groups

Vogt, Helmut

doi:10.1007/bf01297422

Cited by 8 publications

(3 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The results of the influence of anode current density on current efficiency are shown in Table , which clearly indicates that the current efficiency increases with increasing anode current density. This is in conformity with results reported ,, earlier. However, the IR drop increases linearly with the current density, resulting in an increase of cell voltage and consequently higher energy consumption.…”

Section: Resultssupporting

confidence: 94%

Electrochemical Preparation of Barium Chlorate from Barium Chloride

Vasudevan

Mohan

2006

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

The electrochemical oxidation of barium chloride to chlorate employing a noble metal oxide coated anode and a rotating stainless steel cathode is described. The effect of different electrolyte concentration, anode and cathode current density, pH and temperature of the electrolyte, and cathode rotation on current efficiency for the preparation of barium chlorate was studied. A maximum current efficiency of 56% was achieved corresponding to the energy consumption of 7.1 kW‚h‚kg -1 .

show abstract

Section: Resultssupporting

confidence: 94%

Electrochemical Preparation of Barium Chlorate from Barium Chloride

Vasudevan

Mohan

2006

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

show abstract

“…Vogt 18 empirically investigated a majority of the previous models and came to the conclusion that the elctrochemical reactor acts basically like a plug-flow reactor, the consumption of hypochlorite occurring through its oxidation to chlorate and oxygen. He concluded that mixing in the axial direction was small, so that the hypochlorite concentration decreases linearly from the inlet to the outlet, and this concentration gradient defines transport from the bulk to the respective electrodes.…”

mentioning

confidence: 99%

A Simulation of the Tertiary Current Density Distribution from a Chlorate Cell: I. Mathematical Model

Byrne¹,

Fontes²,

Parhammar

et al. 2001

J. Electrochem. Soc.

View full text Add to dashboard Cite

Numerical modeling is becoming an integral part of all research and development within the field of electrolytic systems. A numerical model that calculates the current density distribution and concentration profiles of a chlorate cell is presented here. The results are shown as functions of electrolyte velocity and exchange current density. The model takes into account the three transport mechanisms; diffusion, migration, and convection by considering the development of the flow velocity vector through the channel. It was seen that the developing velocity profile influences the concentration overpotentials, which in turn influences current density distributions. Results from the model show that the total current density decreased along the length of the anode, and that this distribution varied more at lower velocities. In addition, it was seen that migration contributes significantly to species transport, even within the diffusion layer. Finally, the model indicates that the hypochlorite ion is the main participant in the principal side reaction producing oxygen, and not the hypochlorous acid molecule. The results are useful as they increase knowledge of the chlorate process, and can be used to simulate future systems with a wide range of varying parameters such as cell geometry, flow, electrolyte composition, and electrode materials. The aim of the model is to use it as a tool for identifying the sources that contribute to the overpotential in the cell. This article concentrates on the concentration overpotential, which is one of the phenomena that can actually be influenced. © 2001 The Electrochemical Society. All rights reserved.

show abstract

“…A model assuming ideal stirred-tank-reactor conditions for both the electrochemical and the chemical reactor [214] was compared with industrial results [180]. A more recent model combines a plug flow electrolyzer with either a stirred tank or a plug flow chemical reactor [217]. The results show satisfactory agreement with data from two industrial systems [218].…”

Section: Operational Parametersmentioning

confidence: 92%