Ozonisation Technique

Ozonisation is an extremely useful technique for the elucidation of sequencing in unsaturated homopolymers. Use of the technique is illustrated below by a discussion of results that have been obtained by applying the technique to polybutadiene and polyisoprene. 

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Ramarao and co-workers [125] used an ozonisation technique to characterise hydroxyl terminated poly butadiene. 

Applications of this technique are growing and include the analysis of mixtures of pesticides and herbicides, including oiganophosphorus, phenoxyacetic acid, caibamate, urea types, mixtures of various types of organic compounds, alkylbenzene sulphonates, polyethylene glycols, nonylphenyl ethoxylates, dioctadecylmethyl ammonium, ozonisation products and chlorination products. 

A review of possibilities for flue gas modification has been given elsewhere [3]. Summarizing we can conclude that there are two possibilities of modifying the NO/NO2 ratio in flue gases NO oxidation and NO2 addition. NO2 addition is unattractive due to the increase in operational costs. NH3 consumption is at least three times higher as compared to the conventional SCR process. Catalytic oxidation of NO is potentially the most attractive method, but this technique is still under development. NO oxidation by ozonisation and chlorination are proven techniques and commercially applied. However, chlorination causes additional environmental problems and will therefore not be included in this study. Thus, at present only ozonisation can be considered for flue gas modification. 

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