The advanced oxidation process could generate hydroxyl radicals in sufficient quantity to affect water treatment. The reactions of Ozone with specific amines could generate high yields of hydroxyl radicals in initial phase. DMA, trimethylamine and hydroxylamine could accelerate the ozone degradation, but ozone didn't react with protonated DMA and trimethylamine. However, hydroxylamine-O3 system could increase ozone degradation under low pH . At pH=3, the ozone degradation rate increased by 11% in hydroxylamine-ozone system, when compared with simple ozone system. It noted that appropriate rising dosage of hydroxylamine  and temperature could effectively accelerate the degradation of ozone. Hydroxylamine-O3 system follows first-order rate law. The reaction rate constant K increased as the rising of temperature and dosage of hydroxylamine.

Degradation of ozone in amines-ozone system

243rd National Meeting (2012)

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