Electrochemical oxidation of para-chlorophenol on Ti/SnO2-PbO2 electrodes:Introduction of a parameter for the estimation of their efficiency.

To oxidate otherwise non-biodegradable organic pollutants as chlorophenol h as recently been proposed the promising electro-combustion technique. We co nsidered two different types of electrodic material: boron doped diamond (B DD) and lead dioxide electro-deposited on a Ti/SnO2 substrate and we invest igated differences between them in terms of organics oxidation efficiency. In the batch system we utilised for the combustion, the experimental parame ters we investigated, initial concentration of the organic compound, temper ature and current density furnished to the system - showed us that a parame ter like the Instantaneous Current Efficiency (ICE) is affected by mass-tra nsfer limitation at the end of the tests. In this paper we therefore introd uce a new parameter not influenced by these problems that can be very effec tive for the description of electrode efficiency during the conduction of e xperiences.