A study of electrochemical hypochlorite cells

The performance of electrochemical hypochlorite cells as a function of hydrodynamics and electrode material has been studied over a range of conditions. In this, the electrolytic generation of Sodium Hypochlorite (NaOC1) using an undivided cell in a closed-loop experimental equipment was carried out under galvanostatic conditions (ie at constant current). Variations in the concentration of the products (NaOC1, NaC103,02' H2) as well 'as total volume of gas produced were monitored as a function of time. The variables studied include electrolyte (NaCl) flow rate,current density,electrolyte concentration, spacing, and electrolyte temperature. inter-electrode The electrochemical hypochlorite production reaction was then modelled (on the basis of the ~drodynamic conditions within the cell) by generating mathematical equations to describe the behaviour of the hypochlorite cell. Testing of the model equation by matching theoretical plots against experimental values (with the aid of computer), gave results which showed good agreement. The model equation can therefore be used in designing and predicting the behaviour of simple hypochlorite cells. The use of Lead Dioxide (Pb02) as an anode material (in place of Platinum based metals) for ~pochlorite generation was also studied. In general, it was found that the rate of corrosion of the Pb02 anode was higher in dilute brines than in stronger solutions and also higher at lower temperatures.

Level dc:type.qualificationlevel

Doctoral (Level 8)

Year dc:date.issued

1976

Author dc:creator

• Lartey, RB

Language dc:language

en

Identifier

oai:salford-repository.worktribe.com:1389802

OAI identifier oai:identifier

oai:salford-repository.worktribe.com:1389802