Electrochemical behaviour of hydrogen peroxide oxidation kinetics and mechanisms

Electrochemical behaviour of hydrogen peroxide oxidation kinetics and mechanisms 

Owing to the textile-related topics which are covered in this book, this chapter is devoted to a description of a sensor which has been developed to measure and control high hydrogen peroxide concentrations in bleaching processes, and its extension with a flow-injection system to adopt it for use in disinfecting processes. 

Specific research, including with radical scavengers, showed that it is not the H02 particle that participates in the bleaching reaction, but a radical oxygen anion 0214. It is presumed that this particle is formed from H02 which, owing to the localised charge on the terminal oxygen, is unstable and further decomposes  

Apart from the basic products, hydrogen peroxide and sodium hydroxide, an industrial bleaching bath contains many additives, the most important of which are discussed below. From an analytical point of view, it is evident that, for the development of a sensor for hydrogen peroxide, each of the additives used must be investigated to determine whether and to what extent they can interfere. 

1 Schematic representation of the role of waterglass to keep magnesium ions in solution and of the stabilisation of hydrogen peroxide by magnesium ions. 

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