
Bulletin of the Chemical Society of Japan p. 3198 - 3201 (1980)
Update date:2022-08-11
Topics:
Kimura
Suzuki
Ogata
The hypochlorite oxidation of ammonia giving rise to nitrogen evolution was carried out in the dark or under irradiation in order to study the reaction mechanism and application to waste water treatment. UV-irradiation accelerates remarkably the rate of decomposition of unfavorable chloramines. The acceleration covers the pH region 2-12, where corresponding dark reactions are slow. The irradiation also affects the formation of byproducts such as NO//2** minus and NO//3** minus , the effect being a slight increase in NO//2** minus formation in the pH range 2-12. These results suggest an effective industrial application to avoid eutrophication in seas and lakes. The irradiation effect is discussed in relation to reaction mechanism, in which the irradiation possibly facilitates the N-N bond formation after chloramine formation.
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